Performance information

• Effect of photopolymerization and color phase transition on the structural color expression of long-chain diynoate-modified titanium dioxide multiparticle layers　　　　　　　　　　　　　　　
  Shoma Sakamoto; Yui Yamagishi; Yuka Hasunuma; Arisa Watanabe; Katsuyuki Sasaki; Hisayoshi Kobayashi; Kiminori Hirai; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：717, First page：136784, Last page：136784, Jul. 2025, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2025.136784
  DOI ID：10.1016/j.colsurfa.2025.136784, ISSN：0927-7757, 共同研究・競争的資金等ID：46476018;46106369
• Morphology and Properties of Gel-Coating Films Containing Organo-modified Inorganic Nanoparticles Exhibiting the Scattering Ability of Ultraviolet Radiation　　　　　　　　　　　　　　　
  Yuka Hasunuma; Shoma Sakamoto; Tsubasa Takiguchi; Arisa Watanabe; Katsuyuki Sasaki; Hisayoshi Kobayashi; Kiminori Hirai; Atsuhiro Fujimori
  ChemistrySelect, Volume：10, Jun. 2025, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1002/slct.202500569
  DOI ID：10.1002/slct.202500569, 共同研究・競争的資金等ID：46476018;36920529
• Spreading a monolayer of an insoluble Teflon-based polymer with vinyl ether side chains from a solid tablet onto a water surface　　　　　　　　　　　　　　　
  Itsuki Fujii; Naoto Yokokawa; Yoshiki Shioda; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：714, First page：136553, Last page：136553, Jun. 2025, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2025.136553
  DOI ID：10.1016/j.colsurfa.2025.136553, ISSN：0927-7757, 共同研究・競争的資金等ID：46476018;36920529
• Preparation of the Langmuir Monolayer of Polytetrafluoroethylene by Spreading from Solid Tablets
  Yoshiki Shioda; Itsuki Fujii; Atsuhiro Fujimori
  Langmuir, Volume：41, Apr. 2025, [Reviewed], [Last, Corresponding]
  American Chemical Society (ACS), English, Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.5c00618
  DOI ID：10.1021/acs.langmuir.5c00618, ISSN：0743-7463, eISSN：1520-5827, 共同研究・競争的資金等ID：46476018;36920529
• Effective Structural Color Generation by Highly Ordered and Stacked Nanoparticle Layers of Titanium Dioxide Modified with Long-Chain Carboxylic Acids
  Yui Yamagishi; Shoma Sakamoto; Ayane Yamazaki; Arisa Watanabe; Katsuyuki Sasaki; Hisayoshi Kobayashi; Kiminori Hirai; Atsuhiro Fujimori
  Langmuir, Volume：41, Mar. 2025, [Reviewed], [Last, Corresponding]
  American Chemical Society (ACS), English, Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.5c00503
  DOI ID：10.1021/acs.langmuir.5c00503, ISSN：0743-7463, eISSN：1520-5827, 共同研究・競争的資金等ID：46476018;46106369
• Proving Partial Miscibility in Poly(L-lactic acid)/Ethylene-Vinyl Acetate Copolymer Blends Using the Spherulite Observation Method
  Rokibul Hasan Rumon; Chisato Nara; Kai Xu; Atsuhiro Fujimori
  Journal of Composites Science, Volume：9, Number：3, First page：130, Last page：130, Mar. 2025, [Reviewed], [Invited], [Last, Corresponding]
  Poly(L-lactic acid) (PLLA) was blended with an ethylene-vinyl acetate (EVA) copolymer, which is generally recognized as a phase-separated system. The interactions between these polymer species were examined via spherulite observation. The PLLA/EVA blend was concluded to be a partially miscible system. The onset temperature for the crystallization of PLLA, as the crystalline polymer, systematically changed when PLLA was blended with EVA at various ratios. The glass transition behavior of EVA was almost absent in the thermogram when the PLLA:EVA blend ratio was greater than 2:1. The spherulite size distribution of PLLA became finer as the PLLA:EVA ratio was changed from 3:1 to 2:1 to 1:1, and observing spherulites was difficult when the blend ratio was 1:2. Because the nucleation position was different each time during the repeated melting/crystallization of spherulites, this system exhibited homogeneous nucleation. In addition, in a plot of the spherulite size versus the crystallization time, the inclination angle changed between the PLLA/EVA = 3:1 and 2:1 blends, and the critical ratio at which the crystallization behavior changed was estimated.
  MDPI AG, English, Scientific journal
  DOI：https://doi.org/10.3390/jcs9030130
  DOI ID：10.3390/jcs9030130, eISSN：2504-477X, 共同研究・競争的資金等ID：46476018;46106369
• Introduction of organo‐modified carbon nanotubes into fluoropolymer‐based hybrids containing polyrotaxane and cellulose nanofibers as organic fillers and their drawn orientation effects　　　　　　　　　　　　　　　
  Pinjung Chu; Chisato Nara; Rokibul Hasan Rumon; Kai Xu; Atsuhiro Fujimori
  Polymer Composites, Volume：46, Jan. 2025, [Reviewed], [Last, Corresponding]
  Abstract
  
  The effect of drawn orientation on a polymer‐based composite containing two types of functional organic fillers, organo‐modified single‐walled carbon nanotubes (SWCNTs), and a trace amount of dispersant was investigated. To improve the dispersion state of organo‐modified SWCNTs in the presence of organic fillers, we introduced a small amount of fluorinated phosphonic acid in addition to fluorinated phosphonic acid‐modified SWCNTs into a fluorinated polymer matrix. Fluorinated phosphonic acid functioned as a dispersant for organo‐modified SWCNTs in the fluorinated polymer. However, the thermal and mechanical properties of corresponding composites prepared by melt‐compounding did not necessarily improve. When the composite was uniaxially drawn, SWCNT aggregates were observed to be oriented in the direction of the drawing. In addition, the draw‐orienting process improved the thermal and mechanical properties of the composites. Specifically, Young's modulus increased more than seven times when drawn 7 times, reaching 251 MPa. Furthermore, in terms of elongation properties, the strain value reached 78%, nearly four times the original value, when drawn 5 times.
  
  Highlights
  
  Carbon nanotubes were attained to introduce into composite containing organic fillers.
  
  Surface modification of single‐walled carbon nanotubes (SWCNTs) was effective for nanohybridization.
  
  Mechanical properties of the composite containing oriented SWCNTs were improved.
  
  When drawn 7 times, Young's modulus improved by more than 7 times.
  
  When drawn 5 times, the elongation properties improved by about 4 times.
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/pc.29445
  DOI ID：10.1002/pc.29445, ISSN：0272-8397, eISSN：1548-0569, 共同研究・競争的資金等ID：46476018;46106369
• Preparation and Structural Properties of Gel Coating Films Containing Lipophilized Nanocarbon Particles Functionalized with Thixotropic Chains
  Yuka Hasunuma; Shoma Sakamoto; Yui Yamagishi; Atsuhiro Fujimori
  Journal of Oleo Science, Volume：74, Number：1, First page：107, Last page：121, Jan. 2025, [Reviewed], [Last, Corresponding]
  Japan Oil Chemists' Society, English, Scientific journal
  DOI：https://doi.org/10.5650/jos.ess24166
  DOI ID：10.5650/jos.ess24166, ISSN：1345-8957, eISSN：1347-3352, 共同研究・競争的資金等ID：46476018;36920529
• Enhancing in‐plane elasticity of carbon fiber reinforced thermoplastic multilayer films with polyrotaxane and nanocellulose composites　　　　　　　　　　　　　　　
  Kai Xu; Pinjung Chu; Rokibul Hasan Rumon; Atsuhiro Fujimori
  Polymer Composites, Volume：46, Dec. 2024, [Reviewed], [Last, Corresponding]
  Abstract
  
  Sandwich films were prepared by inserting resin sheets between carbon fiber‐reinforced thermoplastic (CFRTP) sheets, and their tensile and bending strengths were evaluated. The CFRTP sheets used nylon 66, polyurethane, and polyphenylene sulfide as impregnating resins. The resin sheet used was polypropylene, a general‐purpose resin, combined with a composite material incorporating polyrotaxane and cellulose nanofibers as organic fillers. The sample containing both components showed a 134% improvement in Young's modulus compared to neat polypropylene. This study controlled the number of layers in the sandwich film and assessed the dependence of mechanical properties on layer count. The sandwich films demonstrated particularly good strength in the in‐plane direction, exhibiting excellent bending properties. Furthermore, using composite materials for the resins sandwiched between CFRTP sheets further enhanced mechanical properties. The film material, which can be prepared through simple press molding, is a lightweight material composed of light elements, and exhibits a Young's modulus in the gigapascal scale. CFRTP sheets using nylon 66 as the impregnating resin, the flexural modulus improved by approximately 5.8 times. Furthermore, by increasing the number of laminations, an additional improvement of 3.1 times was observed. This study also identified conditions for improving elongation properties.
  
  Highlights
  
  A new material was created using carbon fiber reinforced thermoplastics (CFRTP).
  
  Multilayered alternating films made of CFRTP and polymer composite were created.
  
  Corresponding multilayer films showed anisotropy in mechanical properties.
  
  Corresponding multilayer films exhibited excellent in‐plane elasticity.
  
  In‐plane elasticity showed a clear dependency on the number of layers.
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/pc.29426
  DOI ID：10.1002/pc.29426, ISSN：0272-8397, eISSN：1548-0569, 共同研究・競争的資金等ID：46476018;36920529
• Morphological control of bicontinuous phase-separated patterns by preparing mixed monolayers using non-amphiphilic s-triazine derivatives with three fluorinated chains　　　　　　　　　　　　　　　
  Yoshiki Shioda; Itsuki Fujii; Atsuhiro Fujimori
  Journal of Fluorine Chemistry, Volume：279, First page：110351, Last page：110351, Oct. 2024, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jfluchem.2024.110351
  DOI ID：10.1016/j.jfluchem.2024.110351, ISSN：0022-1139, 共同研究・競争的資金等ID：46476018;36920529
• Characterization of Langmuir Monolayers for Nanodiamonds Surface‐Modified with 12‐Hydroxystearyl Chains and the Occurrence of Structural Colors　　　　　　　　　　　　　　　
  Yui Yamagishi; Shoma Sakamoto; Yuka Hasunuma; Atsuhiro Fujimori
  ChemistrySelect, Volume：9, Number：36, First page：e202403262, Sep. 2024, [Reviewed], [Last, Corresponding]
  Abstract
  
  The surfaces of nanodiamond particles are modified using natural castor oil‐derived 12‐hydroxystearic acid, which has thixotropic solvent properties. 12‐Hydroxystearyl chain‐modified nanodiamonds (12OHSt‐ND) are spread from a dispersion medium onto ultrapure water to afford Langmuir monolayers (a single‐particle layer) of 12OHSt‐ND exhibited a two‐dimensional phase transition from an expanded phase to a condensed phase. The surface morphology of the single‐particle layer shows a dispersed form of aggregated particles, while the layered regularity of the multilayers shows high periodicity. The surface hydrophobicity of the single‐particle layer of 12OHSt‐ND is more pronounced than that of the single‐particle layer of stearic acid‐modified nanodiamonds. The origin of the surface hydrophobicity of the single‐particle layer of 12OHSt‐ND is predicted to be the vertical conformation of the modified chains achieved via hydrogen bonding between the modified chains. In addition, the stepwise multilayers of 12OHSt‐ND exhibit various structural colors depending on the number of layers.
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/slct.202403262
  DOI ID：10.1002/slct.202403262, ISSN：2365-6549, eISSN：2365-6549, 共同研究・競争的資金等ID：46476018;36920529
• Tensile and bending properties of sandwich films of carbon fiber reinforced thermoplastics‐polypropylene sheet processed by a simple hot‐press method　　　　　　　　　　　　　　　
  Kai Xu; Pinjung Chu; Rokibul Hasan Rumon; Atsuhiro Fujimori
  SPE Polymers, Volume：5, Number：4, First page：680, Last page：692, Aug. 2024, [Reviewed], [Last, Corresponding]
  Abstract
  
  To develop a material with strong impact resistance, bending direction and in‐plane direction, the tensile and bending properties of sandwich films obtained by placing and re‐pressing a compression‐molded polypropylene sheet between two sheets of carbon‐fiber‐reinforced thermoplastics (CFRTPs) were evaluated. Three types of CFRTP were investigated, and thermoplastic nylon 66, polyurethane, and polyphenylene sulfite were used as the resin base materials to wrap the carbon fiber. Regarding the tensile properties of the sandwich films, the Young's modulus and maximum stress values were lower compared with those of the CFRTP sheets, regardless of the resin base material. However, improvements in elongation properties of 97%, 109%, and 156%, respectively were found, transforming the film into a softer and stronger film. Regarding the bending properties of the sandwich films, the Young's modulus and maximum stress values were higher compared with those of the CFRTP sheet. To examine the influence of the number of layers, the five‐layer sheet, in which the sandwich film was placed in two CFRTP sheets, exhibited inferior elongation properties to the three‐layer sheet during the tensile test. However, the results of the bending test found a significant improvement in Young's modulus of approximately 2.5 times and final strength of approximately three times. We anticipate that this material could be applicable to components requiring specific mechanical properties in both bending and in‐plane directions in future applications.
  
  Highlights
  
  CFRTP sandwich sheets were fabricated using a simple hot‐press method.
  
  The sandwich sheet showed improved mechanical properties in the in‐plane directions.
  
  Both the tensile modulus and the bending modulus have reached the GPa‐order.
  
  The sandwich film in question had particularly excellent bending properties.
  
  The sandwich film showed dependence on the number of layers.
  
  In‐plane elasticity of the films was evaluated using a falling ball test.
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/pls2.10153
  DOI ID：10.1002/pls2.10153, ISSN：2690-3857, eISSN：2690-3857, 共同研究・競争的資金等ID：46476018;36920529
• Metal-desorption and Selective Metal-trapping Properties of an Organized Molecular Film of Azacalixarene-containing Copolymer with Spherulite-forming Ability　　　　　　　　　　　　　　　
  R. Terui; Y. Otsuki; Y. Shibasaki; A. Fujimori
  Bull. Chem. Soc. Jpn, Volume：97, Number：5, First page：uoae050, Jul. 2024, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1093/bulcsj/uoae050
  DOI ID：10.1093/bulcsj/uoae050, 共同研究・競争的資金等ID：46476018;36920529
• Adsorption of lysozyme onto the single-particle layer of the organo-modified nanodiamond and its functional maintenance at high temperatures　　　　　　　　　　　　　　　
  Yuna Yamada; Yuka Hasunuma; Yui Yamagishi; Xu Kai; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：692, First page：133950, Last page：133950, Jul. 2024, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2024.133950
  DOI ID：10.1016/j.colsurfa.2024.133950, ISSN：0927-7757, 共同研究・競争的資金等ID：46476018;36920529
• Formation of Two-dimensional Mixed Monolayers of Integrated-Cellulose Nanofibers and Starch Nanoparticles Using Cellulose Acetate and Soluble Starch　　　　　　　　　　　　　　　
  S. Sugita; R. Nakada; R. H. Rumon; A. Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：696, First page：134268, Jun. 2024, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2024.134268
  DOI ID：10.1016/j.colsurfa.2024.134268, 共同研究・競争的資金等ID：46476018;46106369
• Creation of Organic/Inorganic Hybrids in Two‐Dimensional Organized Films Using Natural Materials and Control of Their Morphology　　　　　　　　　　　　　　　
  Ryoma Nakada; Shogo Sugita; Rokibul Hasan Rumon; Atsuhiro Fujimori
  ChemistrySelect, Volume：9, Number：17, First page：e202400376, Apr. 2024, [Reviewed], [Last, Corresponding]
  Abstract
  
  Starch, an insoluble natural polymer, can be spread into a Langmuir monolayer on the surface of water as amylodextrin by solubilization, where it forms a spherical single‐particle layer at the air–water interface. In this study, we fabricated a two‐dimensional mixed monolayer from soluble starch and organo‐modified montmorillonite and attempted to control its morphology by varying the mixing ratio. The behavior of the organo‐modified montmorillonite was dependent on the spreading solvent and miniaturization was possible using a suitable solvent for spreading insoluble starch. Although both materials formed phase‐separated systems, nearly homogeneous particle layers were formed in some cases because of clay miniaturization. However, X‐ray photoelectron spectroscopy showed that the clay components remained intact and a rectangular morphology derived from aluminosilicate was observed in the mixed film with a high clay ratio. Functionalization as a mixed film clearly demonstrated the hydrophilic properties imparted by the starch particles and the selective adsorption of biomolecules on the clay surface.
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/slct.202400376
  DOI ID：10.1002/slct.202400376, ISSN：2365-6549, eISSN：2365-6549, 共同研究・競争的資金等ID：46476018;36920529
• Formation of interfacial molecular film and metal‐trapping function of azacalixarene‐containing copolymers having spherulite‐forming ability　　　　　　　　　　　　　　　
  Yuto Otsuki; Ryoma Terui; Yuji Shibasaki; Atsuhiro Fujimori
  Polymer Engineering & Science, Volume：64, Number：6, First page：2917, Last page：2927, Apr. 2024, [Reviewed], [Last, Corresponding]
  Abstract
  
  The interfacial molecular film behavior of a newly synthesized copolymer having spherulite‐forming ability and consisting of an azacalixarene moiety and a polyethylene glycol linker was investigated. Furthermore, the ability of the azacalixarene ring in the copolymer Langmuir monolayer to trap metals from the subphase was examined. The copolymer formed a monolayer at the air/water interface with high‐density packing. In addition, the corresponding copolymer formed a stable interfacial monolayer whose behavior did not change significantly as the temperature of the subphase changed. The monolayer morphology exhibited a dot‐like crystalline domain. When the subphase contained cadmium ions, the cyclic moiety showed the ability to trap the metal cations. In this case, the distortion angle of the cup‐shaped conformation of the cyclic moiety in the organized molecular film expanded after metal trapping.
  
  Highlights
  
  LB film of a copolymer containing azacalixarene and PEG units was prepared.
  
  The copolymer formed a dense packing in the LB film.
  
  Copolymer film formed a surface morphology containing crystalline grains.
  
  The copolymer trapped Cd ions in the azacalixarene ring from the subphase.
  
  Due to trapping of Cd ions, the distortion angle of the ring widened by 7°.
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/pen.26735
  DOI ID：10.1002/pen.26735, ISSN：0032-3888, eISSN：1548-2634, 共同研究・競争的資金等ID：46476018;46106369
• Creation of Quasi‐DNA Origami at the Air/Water Interface Using the Collapsed Mechanism of Langmuir Monolayer　　　　　　　　　　　　　　　
  Momo Maeda; Yoshiki Shioda; Atsuhiro Fujimori
  ChemistrySelect, Volume：9, Number：14, First page：e202400063, Apr. 2024, [Reviewed], [Last, Corresponding]
  Abstract
  
  It has achieved the preparation of quasi‐deoxyribonucleic acid (DNA) origami using the techniques of organized molecular films. After the adsorption of DNA from the subphase onto a Langmuir monolayer of polymers containing diamino‐s‐triazine rings, the monolayer collapses owing to high surface pressure, resulting in the formation of a three‐dimensional folded structure of DNA. A homopolymer featuring a diamino‐s‐triazine ring and a copolymer containing 20 % long alkyl chains are used to form the Langmuir monolayer. A‐T base pairs of salmon testis‐derived DNA from the subphase are hydrogen‐bonded and adsorbed onto each Langmuir monolayer. Following the collapse of the Langmuir monolayer, the film height almost doubles, indicating the formation of a bilayer structure consisting of a bioadsorbed polymer monolayer, especially evident in copolymer‐collapsed films. During this period, the bioconjugated bilayer structure adopts a mesoscopic linear morphology within the plane. In this quasi‐DNA origami structure, the chirality in the DNA molecule is maintained, as evidenced by the circular dichroism (CD) spectra displaying a positive Cotton effect. These results correspond to the proposal of a new DNA morphology control technology.
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/slct.202400063
  DOI ID：10.1002/slct.202400063, ISSN：2365-6549, eISSN：2365-6549, 共同研究・競争的資金等ID：46106369;46476018
• Preparation and Mechanical Properties of Fluoropolymer Composite Containing Polyrotaxane and Nanocellulose as Organic Fillers.　　　　　　　　　　　　　　　
  Pinjung Chu; Ko Harada; Kai Xu; Atsuhiro Fujimori
  Polymer Engineering and Science, Volume：64, Number：1, First page：142, Last page：153, Jan. 2024, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Thermoreversible Helical Fibers from Photoreactive Triphenylene-Derived Liquid Crystals in Liquid Paraffin　　　　　　　　　　　　　　　
  T. Hirose; Y. Kikuchi; T. Nakano; T. Ohno. K. Kawamura; NB. Nazri; A. Fujimori; K. Kodama; M. Yasutake
  Heliyon, Volume：9, Number：11, First page：e22307, Dec. 2023, [Reviewed]
  English, Scientific journal
• Appearance of Structural Color by Constructing Highly Regular Single-Particle Layers on a Water Surface of Organo-Modified Magnetite with Different Particle Diameter　　　　　　　　　　　　　　　
  Nanata Kikuchi; Yui Yamagishi; Atsuhiro Fujimori
  ChemistrySelect, Volume：8, Dec. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Utilization of Interfacial Films of Organo-Modified Carbon Nanotubes as Adsorption Templates for a Number of Biomolecules while Maintaining their Activity　　　　　　　　　　　　　　　
  Yuna Yamada; Kai Xu; Atsuhiro Fujimori
  ChemistrySelect, Volume：8, Nov. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Rearrangement and morphological transition of DNA on adsorbent templates of hydrocarbon/fluorocarbon phase-separated monolayers　　　　　　　　　　　　　　　
  Momo Maeda; Yoshiki Shioda; Atsuhiro Fujimori
  Polymer Engineering and Science, Nov. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1002/pen.26505
  DOI ID：10.1002/pen.26505, 共同研究・競争的資金等ID：36920529
• Occurrence of Structural Color by Assembling Single-Particle Layers of Organo-Modified Nanodiamond　　　　　　　　　　　　　　　
  Yui Yamagishi; Nanata Kikuchi; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Oct. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Phase separation patterned films of natural materials: preparation of mixed monolayers of nanocellulose integrates and organo-modified nanoclays　　　　　　　　　　　　　　　
  Shogo Sugita; Ryoma Nakada; Atsuhiro Fujimori
  Polymer Engineering and Science, Volume：63, Aug. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1002/pen.26402
  DOI ID：10.1002/pen.26402, 共同研究・競争的資金等ID：36920529
• Spherulitic Characterization and Hierarchical Structural Evaluation of Azacalixarene-Polyethylene Glycol Copolymers Containing s-Triazine Rings　　　　　　　　　　　　　　　
  Yuto Otsuki; Ryoma Terui; Yui Hoshino; Tomohiro Suzuki; Yuji Shibasaki; Atsuhiro Fujimori
  Macromolecular Chemistry and Physics, Volume：224, Aug. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1002/macp.202300117
  DOI ID：10.1002/macp.202300117, 共同研究・競争的資金等ID：36920529
• Characterization of Coating Films of Thixotropic Solvent Gel Containing Organo-modified Nanodiamonds　　　　　　　　　　　　　　　
  Yuka Hasunuma; Momo Maeda; Yuki Mashiyama; Nanata Kukuchi; Atsuhiro Fujimori
  ChemistrySelect, Volume：8, Aug. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1002/slct.202300305
  DOI ID：10.1002/slct.202300305, 共同研究・競争的資金等ID：36920529
• Effect of Drawn Orientation on Polypropylene/Organo-Modified Carbon Nanotube Composites Containing Polyrotaxane and Nanocellulose　　　　　　　　　　　　　　　
  Kai Xu; Ko Harada; Pinjung Chu; Astuhiro Fujimori
  Advanced Composite Materials, Volume：30, Jul. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Controlling the Various Phase-Separated Patterns in Mixed Monolayers of Non-Amphiphilic Fluorinated Derivatives and Hydrogenated Comb Copolymers　　　　　　　　　　　　　　　
  Yoshiki Shioda; Momo Maeda; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：669, First page：131475, Jun. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Biomolecular Adsorption to Interfacial Single Particle Layer of Organo-Modified Nanodiamond and Its Second-Order Structure　　　　　　　　　　　　　　　
  Kai Xu; Yuna Yamada; Yuki Mashiyama; Atsuhiro Fujimori
  Journal of Oleo Science, Volume：72, Jun. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Solvent Selectivity in Helical/Linear Nanofiber-derived Gelation Imparted by Chiral/Achiral Thixotropic Additive Molecules　　　　　　　　　　　　　　　
  Yuki Mashiyama; Yuka Hasunuma; Atsuhiro Fujimori
  Journal of Fiber Science and Technology, Volume：79, May 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Polypropylene-based nanocomposite with improved mechanical properties: Effect of cellulose nanofiber and polyrotaxane with partial miscibility　　　　　　　　　　　　　　　
  Ko Harada; Pinjung Chu; Kai Xu; Atsuhiro Fujimori
  Polymer Composites, Volume：44, First page：2977, Last page：2987, Apr. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1002/pc.27295
  DOI ID：10.1002/pc.27295, 共同研究・競争的資金等ID：36920529
• Formation Behavior of Monolayers on the Water Surface of Water-Soluble Thermoplastic and Insoluble-Thermosetting Copolymers with Hyperbranched Units Containing s-Benzenetricarbamide Cores　　　　　　　　　　　　　　　
  J. Yamaguchi; S. Sugita; Y. Otsuki; T. Tsukamoto; Y. Shibasaki; A. Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Mar. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Dispersion characteristics of polypropylene/organo-modified single-walled carbon nanotube composites with a long-chain phosphonic acid added as the third dispersant component and their drawn orientation
  Takuto Hayasaki; Ko Harada; Kai Xu; Ahmed A. Almarasy; Atsuhiro Fujimori
  Polymer Bulletin, Volume：80, First page：2413, Last page：2435, Feb. 2023, [Reviewed], [Last, Corresponding]
  Springer Science and Business Media LLC, English, Scientific journal
  DOI：https://doi.org/10.1007/s00289-022-04175-5
  DOI ID：10.1007/s00289-022-04175-5, ISSN：0170-0839, eISSN：1436-2449
• Metal Capture and Desorption Abilities of Two Types of Organized Films of Polyguanamine Derivatives with Cyclic Moiety and Bulky or Flexible Linkers　　　　　　　　　　　　　　　
  Junto Yamaguchi; Shogo Sugita; Yuto Otsuhki; Tadashi Tsukamoto; Yuji Shibasaki; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Jan. 2023, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Solid-State Structure, Phase Transition, and Shape-Memory Properties of Network Copolymers with Hyperbranched Units Containing s-Benzenetricarbamide Cores　　　　　　　　　　　　　　　
  Yuto Otsuki; Junto Yamaguchi; Tadashi Tsukamoto; Yuji Shibasaki, Atsuhiro Fujimori
  Polymer, Oct. 2022, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Annealing-Induced Rearrangement Behavior and Heat-Resistant Regularity of Layered Assemblies of Organo-Modified Inorganic Nanoparticles with Different Initial Orders　　　　　　　　　　　　　　　
  Nanata Kikuchi; Yui Yamagishi; Atsuhiro Fujimori
  Thin Solid Films, Volume：759, First page：139470, Sep. 2022, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• Efficient horizontal lifting and annealing method for creating alternating multilayer structures with hard and soft multi-particle layers　　　　　　　　　　　　　　　
  Takato Ohashi; Yui Yamagishi; Nanata Kikuchi; Atsuhiro Fujimori
  Thin Solid Films, Volume：757, First page：139416, Last page：139416, Sep. 2022, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.tsf.2022.139416
  DOI ID：10.1016/j.tsf.2022.139416, ISSN：0040-6090, 共同研究・競争的資金等ID：36920529
• Interfacial films of cyclic polyguanamine derivatives for metal capturing: selectivity and fluorescence emission properties　　　　　　　　　　　　　　　
  Junto Yamaguchi; Yuto Otsuki; Tadashi Tsukamoto; Yuji Shibasaki; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, First page：129976, Last page：129976, Aug. 2022, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2022.129976
  DOI ID：10.1016/j.colsurfa.2022.129976, ISSN：0927-7757, 共同研究・競争的資金等ID：36920529
• Correlation between Chirality and Spherical Particle Formation Related to the Loss of Function of Thixotropic Additive Molecules　　　　　　　　　　　　　　　
  Yuki Mashiyama; Yuka Hasunuma; Atsuhiro Fujimori
  ChemistrySelect, Volume：7, First page：e202200918, Jul. 2022, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：36920529
• DNA Patterning Utilizing Mixed Monolayer Template by Phase Separation Between Hydrocarbons and Fluorocarbons and Evaluation of Second-order Structural Maintenance Ability　　　　　　　　　　　　　　　
  Momo Maeda; Yoshiki Shioda; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, First page：129429, Last page：129429, Jun. 2022, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2022.129429
  DOI ID：10.1016/j.colsurfa.2022.129429, ISSN：0927-7757, 共同研究・競争的資金等ID：36920529
• Nanofiller dispersing, drawn orientation, and mechanical properties of polymer‐based composites via organo‐modification of single‐walled carbon nanotubes obtained by two‐types of manufacturing processes
  Kai Xu; Ko Harada; Ahmed A. Almarasy; Takuto Hayasaki; Atsuhiro Fujimori
  Polymer Composites, Volume：43, Number：6, First page：3457, Last page：3470, Jun. 2022, [Reviewed], [Last, Corresponding]
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/pc.26628
  DOI ID：10.1002/pc.26628, ISSN：0272-8397, eISSN：1548-0569, 共同研究・競争的資金等ID：36920529
• Fabrication of cellulose nanofibers by the method of interfacial molecular films and the creation of organized soluble starch molecular films　　　　　　　　　　　　　　　
  Toya Yokoyama; Takato Ohashi; Nanata Kikuchi; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：643, First page：128784, Last page：128784, Jun. 2022, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2022.128784
  DOI ID：10.1016/j.colsurfa.2022.128784, ISSN：0927-7757, 共同研究・競争的資金等ID：36920529
• Immobilization of Trypsin from the Subphase to the Langmuir Monolayer of Fluorocarbon-Modified Single-Walled Carbon Nanotube and Its Activity Maintenance
  Yuna Yamada; Kei Obuchi; Nanata Kikuchi; Ahmed A. Almarasy; Atsuhiro Fujimori
  Langmuir, Volume：38, Number：18, First page：5692, Last page：5701, May 2022, [Reviewed], [Last, Corresponding]
  American Chemical Society (ACS), English, Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.2c00283
  DOI ID：10.1021/acs.langmuir.2c00283, ISSN：0743-7463, eISSN：1520-5827, 共同研究・競争的資金等ID：36920529
• Spherical Particle Formation that Deteriorates Thixotropic Property and its Suppression Strategy for Diamide-Based Additives having Two-Hydrocarbons
  Yuki Mashiyama; Haruka Maruyama; Eiichi Satou; Atsuhiro Fujimori
  Journal of Oleo Science, Volume：71, Number：4, First page：505, Last page：514, Apr. 2022, [Reviewed], [Last, Corresponding]
  Japan Oil Chemists' Society, English, Scientific journal
  DOI：https://doi.org/10.5650/jos.ess21311
  DOI ID：10.5650/jos.ess21311, ISSN：1345-8957, eISSN：1347-3352, 共同研究・競争的資金等ID：36920529
• Control of Phase-separated Morphology in Mixed Monolayers of Amphiphilic Comb Polymers Containing Diamino-s-triazine and Non-amphiphilic s-triazine Derivatives With Fluorocarbons　　　　　　　　　　　　　　　
  Haruka Maruyama; Yoshiki Shioda; Momo Maeda; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, First page：128485, Last page：128485, Feb. 2022, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2022.128485
  DOI ID：10.1016/j.colsurfa.2022.128485, ISSN：0927-7757, 共同研究・競争的資金等ID：32483299
• Surface morphology and molecular aggregation state of the organized molecular films of cyclic moiety-containing polyguanamine derivatives with a flexible linker moiety
  Keito Fukushi; Yuto Otsuki; Junto Yamaguchi; Yuji Shibasaki; Atsuhiro Fujimori
  Polymer Bulletin, Jan. 2022, [Reviewed], [Last, Corresponding]
  Springer Science and Business Media LLC, English, Scientific journal
  DOI：https://doi.org/10.1007/s00289-021-03974-6
  DOI ID：10.1007/s00289-021-03974-6, ISSN：0170-0839, eISSN：1436-2449, 共同研究・競争的資金等ID：32483299
• Regularity maintenance properties under deformation of kink-introduced Nano-mille-feuille structures derived from interfacial friction　　　　　　　　　　　　　　　
  Takato Ohashi; Nanata Kikuchi; Atsuhiro Fujimori
  J. Phys. Chem. C, Oct. 2021, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：32483299;14431182
• Regularity Maintenance Property of Multilayered Assemblies of Organic, Inorganic, and Their Alternating Nanoparticle Layers under Heating　　　　　　　　　　　　　　　
  Nanata Kikuchi; Takato Ohashi; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Sep. 2021, [Reviewed], [Last, Corresponding]
  English, Scientific journal
• Interfacial Film Conformation and Its Molecular Arrangement of s-Triazine Derivatives Containing Three Fluorocarbons without Hydrophilic Groups　　　　　　　　　　　　　　　
  Haruka Maruyama; Momo Maeda; Atsuhiro Fujimori
  Journal of Fluorine Chemistry, First page：109880, Last page：109880, Aug. 2021, [Reviewed], [Last, Corresponding]
  Elsevier BV, Scientific journal
  DOI：https://doi.org/10.1016/j.jfluchem.2021.109880
  DOI ID：10.1016/j.jfluchem.2021.109880, ISSN：0022-1139, 共同研究・競争的資金等ID：32483299
• Study on the improvement of dispersibility and orientation control of fluorocarbon‐modified single‐walled carbon nanotubes in a fluorinated polymer matrix　　　　　　　　　　　　　　　
  Takuto Hayasaki; Yuna Yamada; Xu Kai; Ahmed A. Almarasy; Shuichi Akasaka; Atsuhiro Fujimori
  Polymer Composites, Volume：42, Number：9, First page：4845, Last page：4859, Jul. 2021, [Reviewed], [Last, Corresponding]
  A technique for improving the dispersibility of fluorocarbon-modified, single-walled carbon nanotubes (SWCNTs) in fluorinated polymers was investigated. Furthermore, we aimed to achieve uniaxial orientation of SWCNT aggregates via a simple high-temperature drawing method to yield fluoropolymer-based nanocomposites containing uniform dispersed SWCNTs. Highly water-repellent SWCNTs were mixed with phase-separable fluorinated polymers by the chemical modification of their surfaces with fluorocarbons. Introducing a fluorinated phosphonic acid surfactant with a high-sublimation temperature as the third component to improve dispersibility in the polymer matrix resulted in an innovative improvement. The uniform dispersed SWCNTs in the matrix improved the crystallinity, crystallization temperature, and mechanical characteristics of the composites. The high-temperature uniaxial orientation of the composite material reduced differences in the physical properties in the polymer due to differences in the initial dispersibility. This effect was expected since the drawing process promoted the deagglomeration of SWCNTs in the matrix. However, optimal physical properties were observed in SWCNT-oriented composite samples with an excellent initial dispersion.
  Wiley, English, Scientific journal
  DOI：https://doi.org/10.1002/pc.26194
  DOI ID：10.1002/pc.26194, ISSN：0272-8397, eISSN：1548-0569, Web of Science ID：WOS:000669683700001, 共同研究・競争的資金等ID：32483299
• Activity Maintenance Characteristics and Protease Adsorption on Langmuir Monolayer of Organo-Modified Single-Walled Carbon Nanotubes　　　　　　　　　　　　　　　
  Ahmed A. Almarasy; Yuna Yamada; Yuki Mashiyama; Haruka Maruyama; Yusuke Kimura; Atsuhiro Fujimori
  ChemistrySelect, Volume：6, Number：21, First page：5329, Last page：5337, Jun. 2021, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：32483299
• Characterization of Molecular Arrangement of Long-chain Ferrocenyl Derivatives Having Asymmetric Carbon by Method of Organized Molecular Films and Formation of Its Helical Nanofibers　　　　　　　　　　　　　　　
  Y. Kimura; Y. Mashiyama; H. Maruyama; Y. Kawabata; T. Kijima; A. Fujimori
  ChemistrySelect, Volume：6, Number：9, First page：2198, Last page：2209, Jun. 2021, [Reviewed], [Last, Corresponding]
  Formation of organized molecular film and helical nanofibers of ferrocene derivatives having R-12-hydroxystearyl chains with asymmetric carbon was investigated. The 12-hydroxystearyl chain, which induces “thixotropy” due to the formation and breakage of intermolecular hydrogen bonds, was introduced into the ferrocenyl unit. The structure of this derivative as a monolayer on the water surface and its Langmuir-Blodgett (LB) film properties were analyzed. The monolayer showed a two-dimensional phase transition, corresponding to the formation of fibrous morphology. In the LB multilayers, intermolecular hydrogen bonding between hydroxyl groups at the 12-position of the chain and crystalline packing was observed. Raman mapping revealed the difference in surface morphology of each derivative depending on the number of 12-hydroxystearyl chains. The derivative having the single chain showed a right-handed helical morphology in the film and this behavior is similar to those having two and three chains. In circular dichroism spectra, the film showed a positive Cotton effect. Since the helical chains easily entangle with each other to form a sponge-like organization, it was expected that the solvent uptake was the origin of gelation induction to its contact solvent.
  English, Scientific journal
  DOI：https://doi.org/10.1002/slct.202004199
  Scopus：https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85102125657&origin=inward
  Scopus Citedby：https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85102125657&origin=inward
  DOI ID：10.1002/slct.202004199, eISSN：2365-6549, SCOPUS ID：85102125657, 共同研究・競争的資金等ID：14431182
• Adsorption Immobilization of Biomolecules from Subphase on Langmuir Monolayers of Organo-Modified Single-Walled Carbon Nanotube　　　　　　　　　　　　　　　
  Yoshinori Abiko; Yuna Yamada; Takuto Hayasaki; Yusuke Kimura; Ahmed A. Almarasy; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：621, First page：126559, May 2021, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：14431182
• Comparison of characteristics of single-walled carbon nanotubes obtained by super-growth CVD and improved-arc discharge methods pertaining to interfacial film formation and nanohybridization with polymers　　　　　　　　　　　　　　　
  Ahmed A. Almarasy; Takuto Hayasaki; Yoshinori Abiko; Youhei Kawabata; Shuichi Akasaka; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：615, First page：126221, Last page：126221, Apr. 2021, [Reviewed], [Last, Corresponding]
  A comparison of single-walled carbon nanotubes (SWCNTs) produced by super-growth chemical vapor deposition (CVD) and improved-arc discharge methods was performed as it pertains to the formation of their Langmuir-Blodgett films and polymer-based nanocomposite preparation. Two kinds of SWCNTs indicated amphipathic properties after surface chemical modification using long-chain phosphonic acids. The modification rates of the two types of organo-modified SWCNTs were almost the same, impurities were removed to the same extent, and the influence of the tube length distribution was considered to be low. However, it was expected that the SWCNTs made via improved-arc discharge would be superior in regularity in the two-dimensional film. Specifically, the arrangement regularity of the modified chains was high, and as a result, the layering regularity of SWCNTs itself was considered to be high. Owing to organo-modification, SWCNTs manufactured via the super-growth CVD method tended to be dispersed into finer fibers even in a monolayer. Compared to other organic polymers, this organo-modified SWCNT formed a composite material with higher dispersibility. The significant difference in the physical properties of both SWCNTs constitutes a trade-off relationship between dispersibility and two-dimensional regularity. The difference in the physical properties of the two types of SWCNTs could be related to the strength of the interaction between the exposed SWCNT-specific surfaces, even after organo-modification.
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2021.126221
  Scopus：https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85100964513&origin=inward
  Scopus Citedby：https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85100964513&origin=inward
  DOI ID：10.1016/j.colsurfa.2021.126221, ISSN：0927-7757, eISSN：1873-4359, SCOPUS ID：85100964513, 共同研究・競争的資金等ID：14431182
• Synthesis of A2+B3 Type Hyperbranched Poly(amide-ether) Block Copolymer and Its Shape Memory Function　　　　　　　　　　　　　　　
  Ryoji Kudo; Tadashi Tsukamoto; Shiduko Nakajo; Atsuhiro Fujimori; Yoshiyuki Oishi; Yuji Shibasaki
  Eur. Polym. J., Mar. 2021, [Reviewed]
  English, Scientific journal
• Extension of "Interfacial Adsorption Denaturation" Behavior Interpretation Based on Gibbs Monolayer Formation by Biomolecules　　　　　　　　　　　　　　　
  Y. Kimura; Y. Mashiyama; H. Maruyama; A. Fujimori
  J. Oleo Sci., Volume：70, Number：3, First page：349, Last page：362, Mar. 2021, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：14431182
• Effect of the uniaxial orientation on the polymer/filler nanocomposites using phosphonate-modified single-walled carbon nanotube with hydro- or fluorocarbons　　　　　　　　　　　　　　　
  Takuto Hayasaki; Yoshinori Abiko; Ahmed A. Almarasy; Shuichi Akasaka; Atsuhiro Fujimori
  Polymer Bulletin, Volume：78, Number：10, First page：5503, Last page：5524, Oct. 2020, [Reviewed], [Last, Corresponding]
  The effect of drawn orientation on crystalline fluorinated polymer/carbon nanotube nanohybrids was investigated. Single-walled carbon nanotubes (SWCNTs) were surface-modified with long-chain phosphonic acids, thus imparting heat-resistant/nondesorption properties. Polyvinylidene fluoride (PVDF) was used as the crystalline fluorinated polymer and a polypropylene (PP) matrix as the crystalline hydrogenated polymer, for comparison. In the nanocomposite preparation, PVDF was combined with phosphonic acid-modified SWCNT containing fluorocarbon chains, and PP was combined with phosphonic acid-modified SWCNT containing hydrocarbon chains. Nanocomposite preparations of organo-SWCNTs with an affinity for the polymer matrix were achieved by a simple melt-compound method. These nanocomposites were uniaxially drawn at high temperatures near its melting point, and the organo-SWCNTs were aligned in the polymer matrix along the drawn direction. The lamellae in the fluorinated polymer-based nanohybrids were aligned parallel to the drawn direction at 5 x drawing, and converted to a herringbone arrangement with a left- right tilting at 7 x to 9 x drawings. As a result, it was clarified that the addition of a small amount of SWCNT leads to an improvement of crystallinity, crystallization temperature, lamella thickness, and mechanical properties of the nanocomposites.[GRAPHICS].
  Springer Science and Business Media LLC, English, Scientific journal
  DOI：https://doi.org/10.1007/s00289-020-03388-w
  DOI ID：10.1007/s00289-020-03388-w, ISSN：0170-0839, eISSN：1436-2449, Web of Science ID：WOS:000575027700001, 共同研究・競争的資金等ID：14431182
• Tracking and Recovery of Metal Desorption from Organized Films of Polyguanamine Derivatives having Cyclic Moieties　　　　　　　　　　　　　　　
  Keito Fukushi; Junto Yamaguchi; Yuji Shibasaki; Atsuhiro Fujimori
  ChemistrySelect, Volume：5, Number：43, First page：13418, Last page：13428, Oct. 2020, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：14431182
• Verification of Interfacial Monolayer Conformation of Weakly Hydrophilic Diamide Derivatives Possessing a Fluorocarbon-Sandwiched Hydrocarbon　　　　　　　　　　　　　　　
  Haruka Maruyama; Yuki Mashiyama; Yusuke Kimura; Tomoko Yajima; Atsuhiro Fujimori
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, First page：125389, Last page：125389, Aug. 2020, [Reviewed], [Last, Corresponding]
  Elsevier BV, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2020.125389
  DOI ID：10.1016/j.colsurfa.2020.125389, ISSN：0927-7757, 共同研究・競争的資金等ID：14431182
• Analysis of Soft and Hard Nanoparticle Alternating Multilayers for The Development of Theory for Long-Period Stacking Order Structure Prepared by Langmuir-Blodgett Method　　　　　　　　　　　　　　　
  Hiroki Machida; Nanata Kikuchi; Takato Ohashi; Atsuhiro Fujimori
  Thin Solid Films, First page：138235, Last page：138235, Jul. 2020, [Reviewed], [Last, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.tsf.2020.138235
  DOI ID：10.1016/j.tsf.2020.138235, ISSN：0040-6090, 共同研究・競争的資金等ID：14431182
• Formation, Structure, and Function of Hydrogenated and Fluorinated Long-Chain Phosphonate-Modified Single-Walled Carbon Nanotubes with Bidentate Bonds　　　　　　　　　　　　　　　
  Y. Abiko; T. Hayasaki; S. Hirayama; AA. Almarasy; Y. Kawabata; A. Fujimori
  ChemistrySelect, Volume：5, Number：22, Jul. 2020, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  ISSN：2365-6549, J-Global ID：202002248477070298, 共同研究・競争的資金等ID：14431182;14431184
• Creation of Highly Ordered “Nano-Mille-Feuille” Hard/Soft Nanoparticle Multilayers with Inter-Particle Cross-Linking by Diacetylene-Containing Chains　　　　　　　　　　　　　　　
  Takato Ohashi; Nanata Kikuchi; Atsuhiro Fujimori
  Langmuir, Volume：36, Number：20, First page：5596, Last page：5607, Apr. 2020, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：14431182;14431184
• Influence of Uniaxial Orientation of Fluorinated Polymer/Phosphonate-Modified Needle-Like Nanofiller Composite by Drawing.　　　　　　　　　　　　　　　
  S. Hirayama; T. Hayasaki; AA. Almarasy; H. Yabu; M. Tokita; A. Fujimori
  Polym. Compos., Volume：41, Number：8, First page：3062, Last page：3073, Mar. 2020, [Reviewed], [Last, Corresponding]
  The orientation effect of sepiolite natural clay, a needle-shaped nanoparticle, in a polymer matrix was investigated. Uniaxial drawing was performed on polymer-based nanocomposites containing organo-modified sepiolite, achieving uniform dispersion in the crystalline polymer by modifying the surface with organic molecular chains. Fluorinated polymer was used as the matrix, and sepiolite was modified using fluorinated chains. High-temperature drawing was conducted to increase the density of amorphous chains in the fluoropolymer. Observations confirmed the orientation of the nanofiller in the drawing direction. When the filler content was intentionally increased, it was as if it were a nanosized mille-feuille. As a result of 5x drawing, a 20% improvement in crystallinity was calculated. Small-angle X-ray scattering (SAXS) analysis showed a 32 angstrom increase in long-period values. When high-drawing was conducted, some amorphous parts transformed into crystals, and the difference in electron densities between the two regions widened, increasing the long-period value while decreasing the SAXS intensity. The crystallization temperature increased by 1.8 degrees C, and the Young's modulus calculated from the strain-stress curve showed a nearly 4x increase. The mechanical strength doubled when the neat fluoropolymer was drawn five times. This provides a clear understanding of the enhancement behavior of the structural and physical properties of a uniform dispersible polymer/needle nanoparticle nanocomposite using uniaxially oriented nanofillers.
  WILEY, English, Scientific journal
  DOI：https://doi.org/10.1002/pc.25598
  DOI ID：10.1002/pc.25598, ISSN：0272-8397, eISSN：1548-0569, Web of Science ID：WOS:000526134900001
• Polyguanamine Derivative-Based Supramolecular Assemblies with Multiple Hydrogen Bonding and Their Metal Scavenging Abilities　　　　　　　　　　　　　　　
  K. Fukushi; H. Maruyama; Y. Shibasaki; A. Fujimori
  Langmuir, Volume：36, Number：14, First page：3770, Last page：3781, Mar. 2020, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：14431182
• Fabrication of Organo-Modified Carbon Nanotube with Excellent Heat Resistance and Preparation of Its Polymer-Based Nanocomposite by Simple Melt Compounding.　　　　　　　　　　　　　　　
  Y. Abiko; T.Hayasaki; S. Hirayama; AA. Almarasy; A. Fujimori
  Polym. Bull., Volume：78, First page：1585, Last page：1607, Mar. 2020, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：14431182
• Systematic Elucidation of Crystal Structure of Fluorinated Gemini-Type Diamide Derivatives Having Different Lengths with Thixotropic Induced-Ability to Solvents.　　　　　　　　　　　　　　　
  H. Maruyama; K. Fukushi; R. Okano; E. Satou; T. Yajima; A. Fujimori
  J. Fluorine Chem., Volume：2020, Number：233, First page：109505-1, Last page：109505-13, Feb. 2020, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  共同研究・競争的資金等ID：14431182
• Formation of Organized Films with Fluorocarbon-Modified Inorganic Nanoparticles and Their Nanodispersion Behavior in Solvent.　　　　　　　　　　　　　　　
  H. Machida; T. Ohashi; S. Akasaka; A. Fujimori
  J. Fluorine Chem., Volume：230, First page：109433, 2020, [Reviewed], [Last, Corresponding]
  Nanodispersion behavior in organic solvents of nanodiamonds with surfaces modified by amphiphiles containing fluorocarbon chains of different lengths was investigated for future lubricant applications. Fluorocarbon-modified nanodiamonds exhibit excellent dispersion behavior, specifically in nonpolar solvents. This is a phenomenon that is not seen in hydrocarbon-modified nanoparticles. The reduction in the aggregated particle size in organic solvents is more dependent on the modified chain length than on the modification rate. In addition, the behaviors of these organo-modified nanodiamonds on a water surface were systematically compared. These single-particle layers on the water surface were confirmed to depend on the compression rate. The slower the compression speed, the more homogeneous the single-particle layer formed is. Further, proper lattice spacing and high regularity in this system were achieved by low-speed compression. Good dispersibility in organic solvents was related to a long relaxation time to achieve a stable conformation on the water surface. In other words, it was suggested that nanoparticles with better dispersibility in organic solvent require a longer relaxation time for rearrangement in the air/water interface field.
  ELSEVIER SCIENCE SA, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jfluchem.2019.109433
  DOI ID：10.1016/j.jfluchem.2019.109433, ISSN：0022-1139, eISSN：1873-3328, Web of Science ID：WOS:000514019300001
• Preparation of Polymer-Based Nanocomposites Composed of Sustainable Organo-Modified Needlelike Nanoparticles, and Their Particle Dispersion States in the Matrix.　　　　　　　　　　　　　　　
  S. Hirayama; T. Hayasaki; R. Okano; A. Fujimori
  Polym. Eng. Sci., Volume：76, 2020, [Reviewed], [Last, Corresponding]
  English, Research institution
  DOI：https://doi.org/10.1002/pen.25310
  DOI ID：10.1002/pen.25310
• Excellent Performance of Aromatic Polyguanamines Induced by Multiple Hydrogen Bondable Tetraazacalix[2]arene[2]-triazine Ring in their Main Chain.　　　　　　　　　　　　　　　
  H. Sasaki; T. Kotaki; A. Fujimori; T. Tsukamoto; E. Suzuki; Y. Oishi; Y. Shibasaki
  RSC Adv., Volume：10, First page：1361, Last page：1370, 2020, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1039/c9ra09136j
  DOI ID：10.1039/c9ra09136j
• Surface-modification of nanodiamond by amphiphilic materials: Formation of single particle layer and polymer-based nanocomposite　　　　　　　　　　　　　　　
  Takeru Yunoki; Atsuhiro Fujimori
  Topics in Applied Physics, Volume：121, First page：461, Last page：475, 2019
  In this chapter, it focusses on nanodiamond. Nanodiamond is a type of diamond, which is a type of nano-carbon materials. In other words, nanodiamond is an allotrope of nano-carbon materials as same of fullerenes, carbon nanotubes, and graphene. The nanodiamond have universal properties of other nano-carbons typified by like an excellent thermal conductivity and also have antimicrobial properties and high refractive index properties at the same time. On the other hand, like other nanocarbons, it has extremely remarkable aggregation properties. Although it is a substance of a sphere with a minimum primary particle diameter at 5 nm prepared by detonation method, its outermost surface is covered with an adsorbed water nanolayer in order to stabilize the structure. As a result, it is dispersed in an aqueous solution, but it is difficult to disperse in an organic solvent or an organic polymer. Therefore, in this chapter, it will introduce a variety of research examples by surface modification to change nanodiamond into a easier-to-use material.
  Springer Verlag, English, In book
  DOI：https://doi.org/10.1007/978-3-030-12469-4_13
  DOI ID：10.1007/978-3-030-12469-4_13, ISSN：1437-0859, SCOPUS ID：85064756929
• Nano-dispersion of Fluorinated Phosphonate-Modified Nanodiamond in Crystalline Fluoropolymer Matrix of Polymer/Nanofiller Transparent Hybrid.　　　　　　　　　　　　　　　
  T. Tasaki; Y. Guo; H. Machida; S. Akasaka; A. Fujimori
  Polym. Compos., Volume：40, Number：E1, First page：842, Last page：855, 2019, [Reviewed]
  Well-dispersed polymer/organo-modified nanodiamond composites were created using crystalline fluorinated polymers as a matrix. All crystalline fluorinated polymers in this study were heat-resistant and became transparent via high-temperature drawing. The polyvinylidene-fluoride-based copolymer had a low-melting point for a fluororesin and was easy to handle. Both fluorocarbon- and hydrocarbon-modified nanodiamond formed well-dispersed nanocomposites in polyvinylidene-fluoride-based fluorocopolymers. The former was prepared due to excellent miscibility, and the latter was obtained by the so-called nucleation effect. In this case, the nucleation effect was induced by the epitaxial growth resulting from the affinity between the end of the polymer chain and the modified chain and the similarity between the crystal structures of the modified-chain molecule and the corresponding polymer. However, fabricating a nanocomposite by combining hydrocarbon-modified fine particles and a fluorinated polymer is not universally feasible, and this system was unique. Ethylene-tetrafluoroethylene and perfluoroalkoxyalkane polymers showing high-melting points cannot form a nanohybrid with hydrocarbon-modified inorganic nanoparticles. In addition, to form a nanocomposite via melt-compounding, the desorption temperature of the modified chain of the outermost surface of the organo-nanodiamond had to be increased. Phosphonic acid containing fluorocarbon chain-modified nanodiamond satisfied all these requirements. The obtained nanocomposite exhibited enhanced physical properties and unique nanodiamond characteristics. POLYM. COMPOS., 40:E842-E855, 2019. (c) 2018 Society of Plastics Engineers
  WILEY, English, Scientific journal
  DOI：https://doi.org/10.1002/pc.25047
  DOI ID：10.1002/pc.25047, ISSN：0272-8397, eISSN：1548-0569, Web of Science ID：WOS:000459570800082
• Division of Roles of Modified Chains in Organo-Magnetic Nanoparticles Using Organo-Modified Agents Having Hydrophilic Reactive Polar Groups at Both Ends. (※Front Cover)　　　　　　　　　　　　　　　
  T. Yunoki; Y. Kimura; A. Fujimori
  Colloids Surf. B, Volume：173, First page：759, Last page：768, 2019, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfb.2018.10.048
  DOI ID：10.1016/j.colsurfb.2018.10.048
• Correlation Between Nanodispersion of Organo-Modified Nanodiamond in Solvent and Condensed Behavior of Their Organized Particle Films.　　　　　　　　　　　　　　　
  H. Machida; Y. Abiko; S. Hirayama; Q. Meng; S. Akasaka; A. Fujimori
  Colloids Surf. A, Volume：562, First page：416, Last page：430, 2019, [Reviewed]
  Organo-nanodiamond (ND) by surface modification using several surfactants has achieved nanodispersion in organic solvent as if these nanoparticles were dissolved. High surface coverage has reduced the aggregated particle size of organo-ND particles in the solvent, and their modification by fluorocarbon chain has achieved nanodispersion in a nonpolar solvent. By using a spreading solvent for single particle layers on the water surface of various organo-NDs of resulting dispersion medium, a close relation was found between the dispersion characteristics of organo-nanoparticles in the solvent and the condensation behavior in their two-dimensional single particle layer. Organo-ND with high dispersion ability in solvent has inferior two-dimensional condensability as a single particle layer. Sufficient retention time is necessary to form a homogeneous single particle layer on the water surface. The reason behind this property was found to be the secondary aggregation of organo-modified nanoparticles at the air/water interface. Since lipophilicized ND is not necessarily stable on the water surface, increasing aggregated particle size and three-dimensionality were confirmed in the case where the particle compression rate during two-dimensional integration was relatively fast.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2018.11.003
  DOI ID：10.1016/j.colsurfa.2018.11.003, ISSN：0927-7757, eISSN：1873-4359, Web of Science ID：WOS:000454428500051
• Maintenance property of layered regularity in fluorinated phosphonate-modified nanodiamond multi-particle layers under the heating.　　　　　　　　　　　　　　　
  Y. Guo; H. Machida; S. Hirayama; K. Fukushi; S. Akasaka; A. Fujimori
  J. Fluorine Chem., Volume：222-223, First page：15, Last page：23, 2019, [Reviewed]
  Maintenance of the layered regularity in organized particle films of fluorinated chain-modified nanodiamond (ND) with excellent heat resistance under heating was investigated. In fluorinated phosphonic acid-modified ND, desorption of the modified-chain by temperature elevation was suppressed up to 300 degrees C. The fluorinated long chain phosphonate-modified ND formed a stable single-particle film on the water surface, and the multilayers exhibited high layered regularities. This compound had remarkably improved water repellency on the surface at the level of a single-layer film. However, its heat resistance temperature was less than 100 degrees C. The layered regularity, which is easily disturbed on heating, was predicted to be caused by multiple defects in the particle packing in the plane. Therefore, during the formation of a monolayer on the surface of the fluorinated long-chain phosphonate-modified ND, compression and expansion were performed multiple times to promote rearrangement of the particles. As a result, the packing density of the particles in the plane and the maintenance of the layered order improved. In comparison, the layered order of stearyl phosphonate-modified ND was maintained up to 175 degrees C; hence, it was suggested that the packing of the modified-fluorinated chains comprised bidentate bonds and that weak van der Waals interactions were relatively sparse.
  ELSEVIER SCIENCE SA, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jfluchem.2019.04.013
  DOI ID：10.1016/j.jfluchem.2019.04.013, ISSN：0022-1139, eISSN：1873-3328, Web of Science ID：WOS:000473121000003
• Structure/Function Correlation of Thixotropic Additives Based on Three Leaf-like Triamide Derivatives containing Three Alkyl-Chains.　　　　　　　　　　　　　　　
  Y. Nakagawa; K. Watahiki; R. Okano; E. Satou; Y. Shibasaki; A. Fujimori
  Colloids Surf. A, Volume：575, First page：27, Last page：41, 2019, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2019.04.094
  DOI ID：10.1016/j.colsurfa.2019.04.094
• Application of a Simple and Highly Efficient Nanoparticle Surface Modification Method to Single-Walled Carbon Nanotubes and Formation of an Interfacial Organized Film.　　　　　　　　　　　　　　　
  S. Hirayama; Y. Abiko; H. Machida; A. Fujimori
  Thin Solid Films, Volume：685, First page：168, Last page：179, 2019, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1016/j.tsf.2019.06.016
  DOI ID：10.1016/j.tsf.2019.06.016
• Maintenance Properties of Enzyme Molecule Stereostructure at High Temperature by Adsorption on Organo-Modified Magnetic Nanoparticle Layer Template.　　　　　　　　　　　　　　　
  T. Yunoki; Y. Kimura; A. Fujimori
  Bull. Chem. Soc. Jpn, Volume：92, First page：1662, Last page：1671, 2019, [Reviewed], [Last, Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1246/bcsj.20190102
  DOI ID：10.1246/bcsj.20190102
• Creation of High-Density and Low-Defect Molecular Films with a Flat-on Conformation by Interfacial Organization of Triphosphasumanene Trisulfides.　　　　　　　　　　　　　　　
  Y. Shidara; Y. Abiko; K. Fukushi; Y Kimura; S. Hirayama; H. Machida; A. Fujimori
  Langmuir, Volume：35, Number：30, First page：9684, Last page：9693, 2019, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.9b00598
  DOI ID：10.1021/acs.langmuir.9b00598
• Synthesis of semicrystalline poly(guanamine)s based on 2-substituted-4,6-dichloro-1,3,5-triazine with α, ω-alkylene diamines, and the formation of cyclic tetramers　　　　　　　　　　　　　　　
  Yuji Shibasaki; Tomohiro Kotaki; Takahiro Bito; Rina Sasahara; Natsuko Idutsu; Atsuhiro Fujimori; Shuntaro Miura; Yusaku Shidara; Naoya Nishimura; Yoshiyuki Oishi
  Polymer (United Kingdom), Volume：146, First page：12, Last page：20, Jun. 2018, [Reviewed]
  Polycondensation of various 2-substituted-4,6-dichloro-1,3,5-triazine such as N,N-diphenylamino (DCPT), benzylamino (BnDCT) substituents with α, ω - alkylene diamines including hexamethylene (HMDA), octamethylene (OcDA), decamethylene (DcDA), and dodecamethylene diamine (DdDA) was performed, and the resultant polymers were analyzed. Two-phase polymerization in nitrobenzene/aqueous NaHCO3 at 100 °C resulted in a high molecular weight (MW) polymer (Mn = 12,400) with a small fraction (26.7 wt%) of low MW oligomer, whose main component was confirmed as a 4-membered cyclic compound. Polymers prepared with HMDA were crystalline with poor solubility, whereas those with OcDA, DcDA, and DdDA were all amorphous with high MWs (Mn = 40,000–60,000) and good solubility enough to prepare the self-standing transparent films. The polymers show moderate glass transition temperatures from 76 °C to 159 °C. In differential scanning calorimetry measurements, only poly(BnDCT-HMDA) showed a clear endothermic peak (ΔH = 119 J/g), which corresponds to melting at 220 °C.
  Elsevier Ltd, English, Scientific journal
  DOI：https://doi.org/10.1016/j.polymer.2018.05.011
  DOI ID：10.1016/j.polymer.2018.05.011, ISSN：0032-3861, SCOPUS ID：85047065658
• Preparation and its functionality of fluorinated polymer/magnetic nanoparticle composites with well-dispersion of organo-modified nanofiller　　　　　　　　　　　　　　　
  Yusaku Shidara; Takeru Yunoki; Atsuhiro Fujimori
  Advances in Nanotechnology, Volume：21, First page：176, Last page：213, Jan. 2018
  A transparent and flexible crystalline polymer nanohybrid was fabricated, containing well-dispersed magnetic nanoparticles with organic chain-modified surfaces. The partially fluorinated copolymer matrix used is composed of switchboard-type lamellae. These become transparent owing to the creation of high-density amorphous regions on drawing the corresponding film at just below the polymer melting point. Although thecreation of oleo- and hydrophobic fluorinated polymer/organo-modified magnetic nanoparticle nanohybrids is generally difficult, formation via melt compounding was confirmed using wide-angle X-ray diffraction and thermal analysis. On organo-modification of the hydroxyl-terminated magnetic nanoparticle surface with long-chain fatty acids, the resulting improvement in wettability aids the dispersion of the particles and hence maintains transparency. Nano-dispersion of the organo-filler was considered to result from surface modification-induced improvement of particle miscibility and melt compounding. These nanohybrids have enhanced thermal degradation temperatures and mechanical properties, derived from the nucleation effect caused by the adsorption of the terminal polymer chains onto the organic modifier.
  Nova Science Publishers, Inc., English, In book
  SCOPUS ID：85044692666
• Correlation between gas transport properties and the morphology/dynamics of crystalline fluorinated copolymer membranes　　　　　　　　　　　　　　　
  Tatsuki Nyuui; Go Matsuba; Shuichi Sato; Kazukiyo Nagai; Atsuhiro Fujimori
  JOURNAL OF APPLIED POLYMER SCIENCE, Volume：135, Number：2, First page：45665, Jan. 2018, [Reviewed]
  The crystalline structure, dynamics, and gas transport properties (i.e., the gas permeability, gas diffusion coefficient, and gas solubility coefficient) of poly(tetrafluoroethylene-co-perfluoroethylvinylether) (PFA) membranes were systematically investigated via differential scanning calorimetry, wide/small/ultra-small-angle X-ray scattering, and quasielastic neutron scattering measurements. We evaluated the gas transport properties using a constant-volume/variable-pressure method. The gas permeability and the gas diffusion coefficient decreased with increasing crystallinity of the PFA membranes at crystallinities below 32%. However, in membranes with a crystallinity of 32% or greater, these parameters depended on the characteristics of the gas molecules, such as their kinetic diameter. The so-called long spacing period and the thickness of the crystalline/amorphous regions increased with crystallinity according to the small/ultra-small-angle X-ray scattering results. Furthermore, the quasielastic neutron scattering measurements indicated that the scattering law was well fitted to a sum of narrow and broad Lorentzian components. In particular, the narrow components, that is, the local motion of amorphous components and side chains, increased with crystallinity. These results suggest that large gas molecules could pass through the PFA membranes, assisted by the motion in the amorphous region. (C) 2017 Wiley Periodicals, Inc.
  WILEY, English, Scientific journal
  DOI：https://doi.org/10.1002/app.45665
  DOI ID：10.1002/app.45665, ISSN：0021-8995, eISSN：1097-4628, Web of Science ID：WOS:000411806400009
• Nano-dispersion of Organo-modified Nanofiller in Fluorinated Polymer as the Polymer/Magnetic Nanoparticle Composites.　　　　　　　　　　　　　　　
  X. Zhang; Y. Shidara; T. Yunoki; Y. Kasahara; K. Ohmura; M. Iizuka; A. Fujimori
  Polym. Compos., Volume：39, Number：12, First page：4496, Last page：4512, 2018, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1002/pc.24556
  DOI ID：10.1002/pc.24556
• Effect of the Isothermal Crystallization Method on Amorphous Block Copolymers of Aromatic Polyamides and Their Packing Behavior in Two-dimensional Films for Screening of Potential Crystallization Ability.　　　　　　　　　　　　　　　
  Y. Shidara; T. Yunoki; S. Miura; Y. Shibasaki; A. Fujimori
  Polym. Eng. Sci., Volume：58, Number：11, First page：2019, Last page：2030, 2018, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1002/pen.24812
  DOI ID：10.1002/pen.24812
• Fluorinated Polymer/Organo-modified Magnetic Nanoparticle Composite.　　　　　　　　　　　　　　　
  M. Iizuka; A. Fujimori
  SPE Plastics Res. Online, Number：3, First page：1, Last page：4, 2018, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.2417/spepro.006995
  DOI ID：10.2417/spepro.006995
• Comparison of structure/function correlational property of three kinds of gemini-type thixotropic surfactants capable of forming crystalline nanofiber based on hydrogen bonding-solid-state structure, two-dimensional molecular film forming, and epitaxial growth behavior　　　　　　　　　　　　　　　
  Manami Iizuka; Yuto Nakagawa; Yuma Moriya; Eiichi Satou; Atsuhiro Fujimori
  Bulletin of the Chemical Society of Japan, Volume：91, Number：5, First page：813, Last page：823, 2018, [Reviewed]
  In this study, we compare and investigate both microscopic molecular packing and mesoscopic morphogenetic behavior in two-dimensional (2D) organized films/three-dimensional (3D) solids of three kinds of Gemini-type diamide surfactants that systematically differ in terms of their chemical structure. The gelation of the surrounding medium is promoted by growing crystalline nanofibers of these surfactants, and the disappearance of these nanofibers and solvent reflow are caused by the application of a force on the corresponding gel because these surfactant molecules are considered potential thixotropic agents. The layer structure and sub-cell in the 3D crystals of surfactants are formed by the association of van derWaals force and hydrogen bonding because the mechanism responsible for crystalline nanofiber formation is intermolecular hydrogen bonding. In the monolayer on the water surface, only surfactant molecules having a hydroxyl group in the hydrophobic chain formed crystalline nanofibers. The introduction of hydroxyl groups into the hydrophobic chains also promoted a singlephase molecular conformation in 3D crystals. However, the absence of hydroxyl groups in the hydrophobic chain promoted the growth of the nanofibers in the cast film, whereas the introduction of hydroxyl groups in the hydrocarbons improves the thixotropic property itself. In addition, the epitaxial growth of nanofibers upon the addition of a growth aid was promoted by the absence of hydroxyl groups.
  Chemical Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.1246/bcsj.20170406
  DOI ID：10.1246/bcsj.20170406, ISSN：1348-0634, SCOPUS ID：85046959401
• Thermal stability of ordered multi-particle layers of long-chain phosphonate-modified nanodiamond with superior heat-resistance.　　　　　　　　　　　　　　　
  Y. Guo; K. Fukushi; S. Hirayama; H. Machida; Q. Meng; S. Akasaka; A. Fujimori
  Colloids Surf. A, Volume：556, First page：227, Last page：238, 2018, [Reviewed]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2018.08.021
  DOI ID：10.1016/j.colsurfa.2018.08.021, ISSN：0927-7757
• Elucidation of the Origin of Thixotropic Inducing Properties of Additive Amphiphiles, and the Creation of a High-Performance Triamide Amphiphile.(※Invited Feature Article)　　　　　　　　　　　　　　　
  Y. Nakagawa; K. Watahiki; E. Satou; Y. Shibasaki; A. Fujimori
  Langmuir, Volume：34, Number：40, First page：11913, Last page：11924, 2018, [Reviewed], [Invited]
  Japanese, Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.8b02090
  DOI ID：10.1021/acs.langmuir.8b02090
• Poly(amide–ether) Thermoplastic Elastomers Based on Monodisperse Aromatic Amide Hard Segments as Shape-Memory and Moisture-Responsive Materials.　　　　　　　　　　　　　　　
  Y. Shibasaki; T. Mori; A. Fujimori; M. Jikei; H. Sawada; Y. Oishi
  Macromolecules, Volume：51, Number：23, First page：9430, Last page：9441, 2018, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1021/acs.macromol.8b01817
  DOI ID：10.1021/acs.macromol.8b01817
• Nanodispersion in transparent polymer matrix with high melting temperature contributing to the hybridization of heat-resistant organo-modified nanodiamond　　　　　　　　　　　　　　　
  Yusuke Kasahara; Yifei Guo; Taira Tasaki; Qi Meng; Manami Iizuka; Shuichi Akasaka; Atsuhiro Fujimori
  Polymer Bulletin, Volume：75, Number：9, First page：1, Last page：19, Dec. 2017, [Reviewed]
  Abstract: The outermost surface of a nanodiamond was modified with long-chain phosphonic acids. The thermal desorption of the modified chain was suppressed until 350 °C. Nanohybrids of the phosphonic acid-modified nanodiamonds were formed by melt-compounding them with transparent polymers with high melting points over 230 °C. The transparency of the nanohybrids containing the nanodiamonds was maintained and the size of the aggregated nanoparticles on the surface was found to be in the range of 40–70 nm. The melting temperature of the nanohybrid increased compared to that of the matrix polymer, and the D200 crystallite size also improved. In addition, mechanical properties improved, and thermal degradation temperatures also increased
  this is attributed to the good dispersion of the nanodiamonds in the polymer matrix. Furthermore, the nanohybrid exhibited the image projection ability derived from nanodiamonds with high refractive index dispersed in the matrix. Darkening due to carbonization was observed in the nanohybrid consisting of crystalline-fluorinated polymers, but it was overcome by complexing the modified nanodiamond with a fluorinated long-chain phosphonic acid. The desorbed modified chains were assumed to get incorporated into the fluoropolymer with a high molten viscosity and cause carbonization, and it seems that the miscibility of the fluorinated-modified chain resolved this issue. Graphical abstract: [Figure not available: see fulltext.]
  Springer Verlag, English, Scientific journal
  DOI：https://doi.org/10.1007/s00289-017-2259-9
  DOI ID：10.1007/s00289-017-2259-9, ISSN：0170-0839, SCOPUS ID：85039044335
• Controlling the phase-separated morphology of a two-dimensional integrated layer of magnetic nanoparticles by surface modifications using immiscible amphiphiles　　　　　　　　　　　　　　　
  Kyohei Ohmura; Takeru Yunoki; Yusaku Shidara; Manami Iizuka; Atsuhiro Fujimori
  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, Volume：529, First page：462, Last page：474, Sep. 2017, [Reviewed]
  Surface modification with immiscible surfactants was utilized to induce phase separation at the nanometer scale in a two-dimensional particle layer of magnetic nanoparticles. Cobalt ferrite (CoFe2O4) particles (diameter = 30 nm) and magnetite (Fe3O4) particles (diameters = 5 and 30 nm) were typically subjected to surface modification with a hydrogenated and fluorinated long-chain carboxylic acid. A mixed monolayer of hydrogenated and fluorinated organo-magnetic nanoparticles was spread at the air/water interface. This system was used to assess the phase separation because the collapsed surface pressures of both components were individually observed in the isotherms that were measured by systematically changing the composition ratio. A nano-sized phase separation morphology was observed on the surface of the mixed single-particle layers by atomic force microscopy. A "sea-island" structure was observed in which the expanded phase formed by the fluorinated organo-magnetic nanoparticles surrounded the condensed nano-domains of the hydrogenated organo-magnetic nanoparticles. The separate (particulate) nano-phase morphology showed a temperature dependence, and in this case, the fluorinated "sea" phase transformed into a network morphology. The nano-domain of the hydrogenated organo-modified magnetic nanoparticles was a crystalline phase in which the modified chain was packed with two-dimensional hexagonal or orthorhombic systems. The nanophase separation on the surface of the magnetic single-nanoparticle layers likely formed because of repulsive interactions between the immiscible surface modifiers.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2017.06.014
  DOI ID：10.1016/j.colsurfa.2017.06.014, ISSN：0927-7757, eISSN：1873-4359, Web of Science ID：WOS:000407841800056
• Two-dimensional growth of crystalline nanofiber fabricated from Gemini-type amphiphilic diamide derivative inducing the thixotropic property　　　　　　　　　　　　　　　
  Manami Iizuka; Yuto Nakagawa; Kyohei Ohmura; Eiichi Satou; Atsuhiro Fujimori
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：498, First page：64, Last page：75, Jul. 2017, [Reviewed]
  The formation of a nanofiber morphology at the mesoscopic scale and the molecular-level packing of a gemini-type amphiphilic diamide derivative with two hydrocarbons were investigated from two perspectives. First, it was confirmed that a diamide derivative with two hydrocarbons forms crystalline nanofibers even in a monomolecular layer. The height, thickness, and lattice spacing of the two-dimensional orthorhombic system of this crystalline nanofiber in the monolayer of a diamide derivative with two hydrocarbons are 5, 30, and 0.4 nm, respectively. Next, it was determined that the fibrous growth of the diamide derivative with two hydrocarbons, which contributes to the thixotropic ability, can be achieved by the addition of a quaternary ammonium cation with long chains, modified with montmorillonite. Here, the interlayer spacing was about 3.8 nm for the organo-modified montmorillonite and was consistent with the layer spacing of the diamide derivative having two hydrocarbons. The surface pressure area isotherms of the mixed monolayers suggest that there is miscibility between these materials. From "the affinity due to the van der Waals interaction between the terminal groups of the alkyl chains" and the "similarity of layer spacing," epitaxial growth is expected. (C) 2017 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2017.03.016
  DOI ID：10.1016/j.jcis.2017.03.016, ISSN：0021-9797, eISSN：1095-7103, Web of Science ID：WOS:000399855600007
• High-Density Packing of Amorphous Polymer with Bulky Aromatic Rings in Interfacial Molecular Films　　　　　　　　　　　　　　　
  Shuntaro Miura; Yusaku Shidara; Takeru Yunoki; Muhammad Abdullah Al Mamun; Yuji Shibasaki; Atsuhiro Fujimori
  MACROMOLECULAR CHEMISTRY AND PHYSICS, Volume：218, Number：7, First page：1600520, Apr. 2017, [Reviewed]
  High-density packing of the main chains of amorphous high-refractive-index polyguanamine derivatives and aromatic polyamide block copolymers has been investigated in 2D molecular films. Polymer main chains with multiple and bulky aromatic rings are difficult to pack owing to steric hindrance. However, the intermolecular affinity can be enhanced by chain rearrangement. The polymer chain arrangement in 2D films has been controlled at the air/water interface. Furthermore, rearrangement of the main chains at the water/substrate interface during transfer to the solid substrate is also important. The highly hydrophobic polyguanamine derivatives form single-particle layers at the air/water interface, with their bulky functional groups packed densely in nanospheres owing to p-p interactions. The hydrophobic aromatic polyamide copolymers form an expanded monolayer including unpacked chains at the air/water interface. As these copolymers are rearranged during transfer to the solid substrate, densely packed molecular arrangements with end-on configurations are attained in the films.
  WILEY-V C H VERLAG GMBH, English, Scientific journal
  DOI：https://doi.org/10.1002/macp.201600520
  DOI ID：10.1002/macp.201600520, ISSN：1022-1352, eISSN：1521-3935, Web of Science ID：WOS:000398603400004
• Dependency of Nanodiamond Particle Size and Outermost-Surface Composition on Organo-Modification: Evaluation by Formation of Organized Molecular Films and Nanohybridization with Organic Polymers　　　　　　　　　　　　　　　
  Taira Tasaki; Yifei Guo; Qi Meng; Muhammad Abdullah Al Mamun; Yusuke Kasahara; Shuichi Akasaka; Atsuhiro Fujimori
  ACS APPLIED MATERIALS & INTERFACES, Volume：9, Number：16, First page：14379, Last page：14390, Apr. 2017, [Reviewed]
  The formation behavior of organized organo-modified nanodiamond films and polymer nanocomposites has been investigated using nanodiamonds of several different particle sizes and outermost-surface compositions. The nanodiamond particle sizes used in this study were 3 and 5 nm, and the outermost surface contained -OH and/or -COOH groups. The nanodiamond was organo-modified to prepare -OH2+ cations and -COO- anions on the outermost surface by carboxylic anion of fatty acid and long-chain phosphonium cation, respectively. The surface of nanodiamond is known to be covered with a nanolayer of adsorbed water, which was exploited here for the organo-modification of nanodiamond with long-chain fatty acids via adsorption, leading to nanodispersions of nanodiamond in general organic solvents as a mimic of solvency. Particle multilayers were then formed via the Langmuir-Blodgett technique and subjected to fine structural analysis. The organo-modification enabled integration and multilayer formation of inorganic nanoparticles due to enhancement of the van der Waals interactions between the chains. Therefore, "encounters" between the organo-modifying chain and the inorganic particles led to solubilization of the inorganic particles and enhanced interactions between the particles; this can be regarded as imparting a new functionality to the organic molecules. Nanocomposites with a transparent crystalline polymer were fabricated by nanodispersing the nanodiamond into the polymer matrix, which was achievable due to the organo-modification. The resulting transparent nanocomposites displayed enhanced degrees of crystallization and improved crystallization temperatures, compared with the neat polymer, due to a nucleation effect.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/acsami.7b02001
  DOI ID：10.1021/acsami.7b02001, ISSN：1944-8244, Web of Science ID：WOS:000400321800063
• Spherulitic Formation and Characterization of Partially Fluorinated Copolymers and Their Nanohybrids With Functional Fillers　　　　　　　　　　　　　　　
  Muhammad Abdullah Al Mamun; Yusuke Kasahara; Taira Tasaki; Atsuhiro Fujimori
  POLYMER ENGINEERING AND SCIENCE, Volume：57, Number：2, First page：161, Last page：171, Feb. 2017, [Reviewed]
  Poly[vinylidenefluoride-co-(tetrafluoroethylene)] (P(VDFTeFE)) exhibited clear spherulitic texture with negative birefringence. The number and growth rates of the spherulites decreased at high crystallization temperature than at low crystallization temperature. Nonetheless, overall larger spherulites were found at high crystallization temperature and the brightness of the spherulites increased very fast at low crystallization temperature, thereafter it seemed as diminution of birefringence. AFM was used to investigate the impact of organo modified nanodiamond( ND) on spherulitic textures, lamellar thickness, and thickness distribution of P(VDF-TeFE) copolymer. Poly[ethylene- co-(tetrafluoroethylene)] (ETFE) also confirmed spherulites structure and the boundaries could be clearly observed. By incorporation of the organo modified nanodiamond (ND) and organo-modified montmorillonite (MMT) in fluropolymer matrix, it was found that spherulitic texture was seriously disordered and their nanohybrids was found only to have poorly developed spherulite structure. Both of the nanohybrids samples show better crystallization temperature as compared to their neat copolymer samples. Furthermore, the incorporation of nanoparticles decreased the size of the spherulites. (C) 2016 Society of Plastics Engineers
  WILEY, English, Scientific journal
  DOI：https://doi.org/10.1002/pen.24397
  DOI ID：10.1002/pen.24397, ISSN：0032-3888, eISSN：1548-2634, Web of Science ID：WOS:000397032400006
• The Role of Modifying Molecular Chains in the Formation of Organized Molecular Films of Organo-modified Inorganic Particles　　　　　　　　　　　　　　　
  Manami Iizuka; Yusaku Shidara; Atsuhiro Fujimori
  16TH INTERNATIONAL CONFERENCE ON ORGANIZED MOLECULAR FILMS (ICOMF16-LB16), Volume：98, 2017, [Reviewed]
  The role of organo-modifying molecular chains in the formation of molecular films of organo-modified nanodiamond is discussed herein based on interfacial chemical particle-integration of organo-modified nanodiamond having a particle size of 5 nm. The surface of nanodiamond is known to be covered with a nano-layer of adsorbed water. This water nano-layer was exploited for organo-modification of nanodiamond with long-chain fatty acids via adsorption, leading to nano-dispersion of nanodiamond in general organic solvents as a mimic of solvency. The organo-modified nanodiamond dispersed "solution" was used as a spreading solution for depositing a mono-"particle" layer on the water surface, and a Langmuir particle layer was integrated at the air/water interface. Multi-"particle" layers were then formed via the Langmuir-Blodgett technique, and were subjected to fine structural analysis. The effect of organo-modification enabled integration and multilayer formation of inorganic nano-particles due to enhancement of the van der Waals interactions between the chains. That is to say, the "encounter" between the organo-modifying chain and the inorganic particles led to solubilization of the inorganic particles and enhanced interactions between the particles, which can be regarded as imparting new function to the organic molecules.
  E D P SCIENCES, English, International conference proceedings
  DOI：https://doi.org/10.1051/matecconf/20179801001
  DOI ID：10.1051/matecconf/20179801001, ISSN：2261-236X, Web of Science ID：WOS:000407966500001
• Rapid synthesis and properties of segmented block copolymers based on monodisperse aromatic poly(N-methyl benzamide) and poly(propylene oxide)　　　　　　　　　　　　　　　
  T. Mori; S. Masukawa; T. Kikkawa; A. Fujimori; A. Satoh; K. Matsumoto; M. Jikei; Y. Oishi; Y. Shibasaki
  RSC ADVANCES, Volume：7, Number：54, First page：33812, Last page：33821, 2017, [Reviewed]
  Monodisperse aromatic N-methyl benzamide-based molecules (repeat number: x = 5-10, molar mass distribution M-w/M-n = 1.02-1.04) connected with terephthalic acid at both sides (MAB(x-x)) were rapidly prepared by a step-wise condensation reaction using the reported one-pot dendrimer synthetic method. These were copolymerized with NH2-terminated poly(propylene oxide) (PPOy) using a condensation reagent at ambient temperature, and the relationship between the structure and the properties was evaluated. The copolymers, poly(MAB(x-x)-b-PPOy), had Mn values up to 12 500 g mol(-1) (M-w/M-n = 1.6), with only a single Tg at -70 C-circle by DSC, assignable to the pure PPO domain. Only for the copolymer films consisting of a monodisperse MAB(x-x) segment, did the dynamic mechanical analysis (DMA) show two Tg values at -70 and above 50 C-circle, indicating the clear phase segregation of the copolymers. The mechanical properties of the copolymer films were mostly dependent on the fraction of the monodisperse hard segment, and the tensile modulus and elongation at break varied from 3.3 to 32.5 MPa and 150 to 540%, respectively.
  ROYAL SOC CHEMISTRY, English, Scientific journal
  DOI：https://doi.org/10.1039/c7ra05161a
  DOI ID：10.1039/c7ra05161a, ISSN：2046-2069, Web of Science ID：WOS:000405279100014
• Topological "Interfacial" Polymer Chemistry: Dependency of Polymer "Shape" on Surface Morphology and Stability of Layer Structures When Heating Organized Molecular Films of Cyclic and Linear Block Copolymers of n-Butyl Acrylate-Ethylene Oxide　　　　　　　　　　　　　　　
  Qi Meng; Satoshi Honda; Yasuyuki Tezuka; Takuya Yamamoto; Atsuhiro Fujimori
  JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Volume：54, Number：4, First page：486, Last page：498, Feb. 2016, [Reviewed]
  The "topological polymer chemistry" of amphiphilic linear and cyclic block copolymers at an air/water interface was investigated. A cyclic copolymer and two linear copolymers (AB-type diblock and ABA-type triblock copolymers) synthesized from the same monomers were used in this study. Relatively stable monolayers of these three copolymers were observed to form at an air/water interface. Similar condensed-phase temperature-dependent behaviors were observed in surface pressure-area isotherms for these three monolayers. Molecular orientations at the air/water interface for the two linear block copolymers were similar to that of the cyclic block copolymer. Atomic force microscopic observations of transferred films for the three polymer types revealed the formation of monolayers with very similar morphologies at the mesoscopic scale at room temperature and constant compression speed. ABA-type triblock linear copolymers adopted a fiber-like surface morphology via two-dimensional crystallization at low compression speeds. In contrast, the cyclic block copolymer formed a shapeless domain. Temperature-controlled out-of-plane X-ray diffraction (XRD) analysis of Langmuir-Blodgett (LB) films fabricated from both amphiphilic linear and cyclic block copolymers was performed to estimate the layer regularity at higher temperatures. Excellent heat-resistant properties of organized molecular films created from the cyclic copolymer were confirmed. Both copolymer types showed clear diffraction peaks at room temperature, indicating the formation of highly ordered layer structures. However, the layer structures of the linear copolymers gradually disordered when heated. Conversely, the regularity of cyclic copolymer LB multilayers did not change with heating up to 50 degrees C. Higher-order reflections (d(002), d(003)) in the XRD patterns were also unchanged, indicative of a highly ordered structure. (c) 2015 Wiley Periodicals, Inc.
  WILEY-BLACKWELL, English, Scientific journal
  DOI：https://doi.org/10.1002/polb.23936
  DOI ID：10.1002/polb.23936, ISSN：0887-6266, eISSN：1099-0488, Web of Science ID：WOS:000367722800005
• Fabrication and function of “polymer nanosphere multilayered organization”　　　　　　　　　　　　　　　
  Manami Iizuka; Atsuhiro Fujimori
  Nanosheets and Nanospheres: Types, Applications and Research Insights, First page：85, Last page：132, Jan. 2016
  This chapter introduces on a new functionality exhibited by “polymer nanosphere multilayered organization," a new type of molecular organization, and the relationship between their structure and function. The polymer nanosphere multilayered organization is a fine structural material formed by the accumulation of single-particle layers of a hydrophobic polymer at the air/water interface
  these single-particle layers have uniform height along the c-axis. We constructed a multiparticle layered organization of aromatic polyamides with rigid main chains and flexible side chains by the Langmuir-Blodgett (LB) technique, which resulted in a highly regular arrangement along the c-axis. The particle arrangement was estimated by performing out-of-plane X-ray diffraction (XRD) analysis and atomic force microscopic (AFM) observation. The results suggest that a double-particle layered structure (Y-type) is formed by the LB technique, forming amphiphilic particles at the air/water interface. Copolymers with highly hydrophobic carbazole contents and both hydrogenated and fluorinated side-chains also formed a single-particle layer at the air/water interface and exhibited multiparticle layers by a LB technique. Therefore, it is possible to control the formation of single- and double-particle layered structure using these techniques. Further, it was found that multiparticle layered organization of polymer nanospheres and polymer nanosheets could be formed simultaneously with the same component material. By employing the “alternate compression-relaxation method," high-density, low defect particle layers are formed with a clear increase in their crystallite sizes. In the case of a ternary comb copolymer containing a carbazole ring, one particle is formed by the assembly of approximately 60 units of collapsed monolayer-like double layers. This structure is stabilized by the formation of side-chain crystals in the interlayer, with oriented φ-φ stacking of carbazole rings, resulting in enhanced fluorescence emission intensity.
  Nova Science Publishers, Inc., English, In book
  SCOPUS ID：85016815916
• Synthesis of highly refractive and highly fluorescent rigid cyanuryl polyimines with polycyclic aromatic hydrocarbon pendants　　　　　　　　　　　　　　　
  T. Kotaki; N. Nishimura; M. Ozawa; A. Fujimori; H. Muraoka; S. Ogawa; T. Korenaga; E. Suzuki; Y. Oishi; Y. Shibasaki
  POLYMER CHEMISTRY, Volume：7, Number：6, First page：1297, Last page：1308, 2016, [Reviewed]
  A series of rigid cyanuryl polyimines, polyguanamines (PGs) bearing polycyclic aromatic hydrocarbon pendants were successfully synthesized from 2-substituted 4,6-dichloro-1,3,5-triazine and aromatic diamine monomers used in conventional solution polymerization. In addition, their thermal and optical properties were also investigated. All polymers showed high thermostabilities (T-g similar to 320 degrees C, T-d5 (N-2) similar to 466 degrees C, residue at 800 degrees C under nitrogen similar to 69.0%) and adequate solubilities in polar organic solvents. Films prepared by the solvent-cast method showed good transparencies, which mainly depended on the diamine structure as opposed to the dichloride moiety. The refractive indices at the D-line (589 nm) of the PG films were unexpectedly high, between 1.677 and 1.800, compared to those of common organic optical polymeric resins. The incorporated melamine moieties afforded effective dense packing with the polycyclic aromatic hydrocarbon groups filling the free spaces between rigid polymer chains, resulting in unusually high refractive indices. The PG polymer solution in N-methylpyrrolidone showed strong blue fluorescence (371-471 nm) with a quantum yield of up to 98%.
  ROYAL SOC CHEMISTRY, English, Scientific journal
  DOI：https://doi.org/10.1039/c5py01920f
  DOI ID：10.1039/c5py01920f, ISSN：1759-9954, eISSN：1759-9962, Web of Science ID：WOS:000369605200013
• Flexible Transparent Fluorinated Nanohybrid with Innovative Heat-Resistance Property-New Technology Proposal for Fabrication of Transparent Materials Using "Crystalline" Polymer　　　　　　　　　　　　　　　
  Muhammad Abdullah Al Mamun; Youichi Soutome; Qi Meng; Atsuhiro Fujimori
  JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Volume：53, Number：23, First page：1674, Last page：1690, Dec. 2015, [Reviewed]
  A new technology for the production of transparent material, using a "crystalline" polymer, is proposed in this study. In addition, a heat-resistant transparent flexible plastic film with a high hydrophobic surface and a thermal decomposition temperature near 400 degrees C was created. Partially fluorinated crystalline polymer with switchboard-type lamellae results high transparency as a consequence of the formation of a high-density amorphous structure based on high-temperature drawing just below the melting point at 250 degrees C. Melt-compounding with montmorillonite modified by the long-chain quaternary phosphonium with high coverage induces formation of a nano-hybrid that retains transparency and also results in an increase in the thermal degradation temperature by over 50 degrees C. Through this technology, which results in heat-resistance, transparency, and flexibility, the nano-micro-millimeter structures of solid-state polymers are hierarchically controlled, which enables the creation of new materials. (C) 2015 Wiley Periodicals, Inc.
  WILEY-BLACKWELL, English, Scientific journal
  DOI：https://doi.org/10.1002/polb.23889
  DOI ID：10.1002/polb.23889, ISSN：0887-6266, eISSN：1099-0488, Web of Science ID：WOS:000364707000005
• Creation of giant two-dimensional crystal of zinc oxide nanodisk by method of single-particle layer of organo-modified inorganic fine particles　　　　　　　　　　　　　　　
  Qi Meng; Nanami Honda; Said Uchida; Kazuaki Hashimoto; Hirobumi Shibata; Atsuhiro Fujimori
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：453, First page：90, Last page：99, Sep. 2015, [Reviewed]
  In this study, the formation and structure of a single-particle layer of organo-zinc oxide are investigated using surface-pressure-area (pi-A) isotherms, out-of-plane X-ray diffraction (XRD) analysis, and atomic force microscopy (AFM). Further, techniques for achieving the solubilization of inorganic fine particles in general solvents have been proposed, and a single-particle layer has been formed using such an inorganic solution as a "spreading solution" for an interfacial film. Surface modification of ZnO is performed using a long-chain carboxylic acid. Accordingly, a regular arrangement of ZnO can be easily achieved in order to overcome the relatively weak van der Walls interactions between inorganic materials. A condensed Langmuir monolayer of these particles is also formed. A multiparticle layered structure is constructed by the Langmuir-Blodgett (LB) technique. Out-of-plane XRD measurement results for a single-particle layer of organo-ZnO clearly show a sharp peak at 42 angstrom. This peak is attributed to the distance between ZnO layers. The AFM image of this single-particle layer of organo-ZnO shows a particle assembly with a uniform height of 60 nm. These aggregated particles form large two-dimensional crystals. In other words, a regular periodic structure along the c-axis and a condensed single-particle layer had been fabricated using Langmuir and LB techniques. (C) 2015 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2015.04.058
  DOI ID：10.1016/j.jcis.2015.04.058, ISSN：0021-9797, eISSN：1095-7103, Web of Science ID：WOS:000356187200012
• Fabrication of Transparent Nanohybrids with Heat Resistance Using High-Density Amorphous Formation and Uniform Dispersion of Nanodiamond　　　　　　　　　　　　　　　
  Muhammad Abdullah Al Mamun; Youichi Soutome; Yusuke Kasahara; Qi Meng; Shuichi Akasaka; Atsuhiro Fujimori
  ACS APPLIED MATERIALS & INTERFACES, Volume：7, Number：32, First page：17792, Last page：17801, Aug. 2015, [Reviewed]
  A new technology for the production of transparent material using a "crystalline" polymer is proposed in the present study. Further, transparent and flexible crystalline polymer nanohybrid film containing well-dispersed nanodiamond filler was fabricated. Partially fluorinated crystalline polymer with switchboard-type lamellae results in high transparency as a consequence of the formation of a highdensity amorphous structure based on high-temperature drawing just below the melting point at 110 degrees C. Although the formation of nanohybrid materials composed of fluorinatedpolymer/organo-moclified nanocarbon is generally difficult, we confirmed the formation, via melt-compounding, using atomic force microscopy and wide-angle X-ray diffraction. Even though the polymer matrix/nanodiamond hybrid has remarkable aggregation properties, a well-dispersed state was achieved because of improvement in wettability obtained through surface modification of filler. The resulting nanohybrid demonstrates transparency, increased thermal degradation temperature, and enhanced mechanical properties, which seem to be derived from the nucleation effect caused by the adsorption of the terminal polymer chain onto the organic modifier.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/acsami.5b04083
  DOI ID：10.1021/acsami.5b04083, ISSN：1944-8244, Web of Science ID：WOS:000360027100032
• Control of Fine Structure in "Polymer Nanosphere Multilayered Organization" and Enhancement of Its Optical Property　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Takahiro Kikkawa; Qj Meng; Yuji Shibasaki
  LANGMUIR, Volume：31, Number：33, First page：9177, Last page：9187, Aug. 2015, [Reviewed]
  This paper reports on a new functionality exhibited by "polymer nanosphere multilayered organization", a new type of molecular organization, and the relationship between their structure and function. The polymer nanosphere multilayered organization is a fine structural material formed by the accumulation of single-particle layers of a hydrophobic polymer at the air/water interface; these single-particle layers have uniform height along the c-axis. By employing the "alternate compression relaxation method", high-density, low-defect particle layers are formed with a clear increase in their crystallite sizes. In the case of a ternary comb copolymer containing a carbazole ring, one particle is formed by the assembly of approximately 60 units of collapsed monolayer-like double layers. This structure is stabilized by the formation of side-chain crystals in the interlayer, with oriented pi-pi stacking of carbazole rings, resulting in enhanced fluorescence emission intensity.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.5b01162
  DOI ID：10.1021/acs.langmuir.5b01162, ISSN：0743-7463, Web of Science ID：WOS:000360324000024
• Fine structural analysis, formation of interfacial particle films, and accurate estimation of orientation in polyguanamine derivatives with a high refractive index　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Shuntaro Miura; Takahiro Kikkawa; Yuji Shibasaki
  JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Volume：53, Number：14, First page：999, Last page：1009, Jul. 2015, [Reviewed]
  Precise analyses of the molecular arrangement of three-dimensional crystals, two-dimensional molecular films, and interfacial particle layers of polyguanamine derivatives with a high refractive index have been performed. The high refractive index of the polyguanamine derivatives is not due to the chemical structure of the molecule, but is based on the packing of molecular chains or the refraction of transmitted light due to the difference in electron density between the crystalline and amorphous regions. A highly crystalline polymer has been produced by polycondensation of guanamine derivatives bearing a triazine ring and phenyl rings. The packing models of molecular chains in the three-dimensional crystal have been determined using wide-angle X-ray diffraction measurements and reciprocal lattice analysis. Highly hydrophobic polyguanamine derivatives undergo a transition from monolayer to single particle layer at the air/water interface. The -conjugated molecular plane in the two-dimensional films is densely stacked. Multiparticle layers are formed with a highly ordered layered structure. Polymer nanoparticles are formed by the integration of units of the collapsed polymer monolayer folded along the height direction. Since this folding occurs within the amorphous region, formation of fine particles with a high refractive index and their integrated films with densely packed -conjugated planes is feasible. (c) 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015, 53, 999-1009
  WILEY-BLACKWELL, English, Scientific journal
  DOI：https://doi.org/10.1002/polb.23728
  DOI ID：10.1002/polb.23728, ISSN：0887-6266, eISSN：1099-0488, Web of Science ID：WOS:000355771400004
• Morphological transition of a conductive molecular organization with non-covalent from nanonetwork to nanofiber　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Rie Yamato; Takahiro Kikkawa; Yoko Tatewaki
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：448, First page：180, Last page：188, Jun. 2015, [Reviewed]
  The formation of nanofiber morphology at a mesoscopic scale, and molecular level stacking of a tetrathiafulvalene (TTF) derivative with a chiral group were investigated by the one-dimensional growth method in interfacial molecular films. Monomolecular films of a 17F derivative with a chiral borneol group display a two-dimensional phase transition at the air/water interface. At high surface pressures, nanonetwork domains are formed, where the TTF molecular planes are densely packed with an interlayer distance of 4.1 A. The formation of this network is attributed to the organized aggregation of the TTF derivatives, which is a result of strong intermolecular interactions. Subsequently, the growth of morphology is encouraged by the application of the one-dimensional growth method at low surface pressure conditions, varying compression speeds, and subphase temperatures. At low surface pressure and a subphase temperature of 15 C, the 17F derivatives aggregated as nanofibers with close packing of molecules. Upon raising the subphase temperature, the thickness of the nanofibers was found to increase and hence, spontaneous morphogenesis at the air/water interface was achieved. (C) 2015 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2015.02.024
  DOI ID：10.1016/j.jcis.2015.02.024, ISSN：0021-9797, eISSN：1095-7103, Web of Science ID：WOS:000360592100023
• Synthesis of a A(2)B(3)-type Hyperbranched Copolymers Based on a 3-Armed Unimolecular 4-N-Methylbenzamide Pentamer and Poly(propylene oxide)　　　　　　　　　　　　　　　
  Shinya Masukawa; Takahiro Kikkawa; Atsuhiro Fujimori; Yoshiyuki Oishi; Yuji Shibasaki
  CHEMISTRY LETTERS, Volume：44, Number：4, First page：536, Last page：538, Apr. 2015, [Reviewed]
  A novel hyperbranched copolymer (HBCP), with a number-average molecular weight from 11000 to 25000, was successfully prepared by the direct condensation polymerization of a unimolecular 3-armed 4-N-methylbenzamide pentamer (TMA-3MAB(5)) as a hard segment (B-3 monomer), with amine-functionalized poly(propylene oxide) (PPOx) (x: degree of s polymerization, 32 or 64) (A(2) monomer) at both ends as a soft segment, and investigated its possibility as a thermoplastic elastomer. The highly pure B-3 molecule, TMA-3MAB(5), was quantitatively obtained by the step-growth reaction of 4-(N-methylamino)benzoic acid (MAB) using thionyl chloride as the condensation reagent and trimesic acid (TMA) as the core molecule in N-methylpyrrolidone (NMP) at 20 degrees C for 0.5 h for each step. The HBCP showed two glass transitions corresponding to imperfectly segregated PPO-rich and polybenzamide hard segment-rich domains, and the film showed good mechanical properties (Young's Modulus T-M 0.25-4.0 MPa, elongation at break E-B 133-1470%), which were controlled by the fraction of the hard segment.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.150022
  DOI ID：10.1246/cl.150022, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000352328700041
• The Role of Modifying Molecular Chains in the Formation of Organized Molecular Films of Organo-Modified Nanodiamond: Construction of a Highly Ordered Low Defect Particle Layer and Evaluation of Desorption Behavior of Organic Chains　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Yusuke Kasahara; Nanami Honda; Shuichi Akasaka
  LANGMUIR, Volume：31, Number：9, First page：2895, Last page：2904, Mar. 2015, [Reviewed]
  The role of organo-modifying molecular chains in the formation of molecular films of organo-modified nanodiamond is discussed herein based on interfacial chemical particle integration of organo-modified nanodiamond having a particle size of 5 nm. The surface of nanodiamond is known to be covered with a nanolayer of adsorbed water. This water nanolayer was exploited for organo-modification of nanodiamond with long-chain fatty acids via adsorption, leading to nanodispersion of nanodiamond in general organic solvents as a mimic of solvency. The organo-modified nanodiamond dispersed solution was used as a spreading solution for depositing a mono-particle layer on the water surface, and a Langmuir particle layer was integrated at the air/water interface. Multi-particle layers were then formed via the Langmuir-Blodgett technique and were subjected to fine structural analysis. The effect of organo-modification enabled integration and multilayer formation of inorganic nanoparticles due to enhancement of the van der Waals interactions between the chains. That is to say, the encounter between the organo-modifying chain and the inorganic particles led to solubilization of the inorganic particles and enhanced interactions between the particles, which can be regarded as imparting new function to the organic molecules. The morphology of the single-particle layer was maintained after removal of the organic region of the composite via the baking process, whereas the regularity of the layered period was disordered. Thus, the organic chains are essential as modifiers for maintenance of the layered structure.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/la505008u
  DOI ID：10.1021/la505008u, ISSN：0743-7463, Web of Science ID：WOS:000350918500034
• Creation of High-Density and Low-Defect Single-Layer Film of Magnetic Nanoparticles by the Method of Interfacial Molecular Films　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Kyohei Ohmura; Nanami Honda; Koichi Kakizaki
  LANGMUIR, Volume：31, Number：10, First page：3254, Last page：3261, Mar. 2015, [Reviewed]
  A technique to solubilize fine magnetic inorganic particles in general organic solvents is proposed via surfaces modification by long-chain carboxylic acids. This organic modification should overcome the relatively weak van der Waals interactions between the nanoparticles, allowing the formation of ordered arrangements of the modified Fe3O4 and CoFe2O4 materials. Using nanodispersions of these organo-modified magnetic nanoparticles as "spreading solutions", Langmuir monolayers of these particles were formed. Multiparticle layered structures were constructed by the Langmuir-Blodgett (LB) technique. The fabrication of single- and multiparticle layers of organo-modified magnetic nanoparticles was investigated using surface pressure-area (pi-A) isotherms, out-of-plane X-ray diffraction (XRD), in-plane XRD, and atomic force microscopy (AFM). The out-of-plane XRD profile of a single-particle layer of organo-modified Fe3O4 clearly showed a sharp peak which was attributed to the distance between Fe3O4 layers along the c-axis. The AFM image of single-particle layer of organo-modified CoFe2O4 revealed integrated particle organization with a uniform height; these aggregated particles formed large two-dimensional crystals. For both nanoparticle species, regular periodic structures along the c-axis and high-density single-particle layers were produced via the Langmuir and LB techniques.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.5b00241
  DOI ID：10.1021/acs.langmuir.5b00241, ISSN：0743-7463, Web of Science ID：WOS:000351327300036
• Crystallographic and magnetic properties of Cu2U-type hexaferrite　　　　　　　　　　　　　　　
  K. Kamishima; R. Tajima; K. Watanabe; K. Kakizaki; A. Fujimori; M. Sakai; K. Watanabe; H. Abe
  JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, Volume：375, First page：54, Last page：60, Feb. 2015, [Reviewed]
  We have investigated the synthesis conditions, and the magnetic properties of the Cu2U-type hexagonal ferrite, Ba4Cu2Fe36O60. The Cu2U-rype hexaferrite was synthesized at the sintering temperature of 1050 degrees C with the initial composition of Ba4.4Cu2Fe37.6O62.8 (Cu2U + 0.2T-block). The saturation magnetizations at 300 K and 5 K are 46.8 A m(2)/kg and 65.0 A m(2)/kg, respectively. The Curie temperature is 420 degrees C which is lower than that of the M-type ferrite (450 degrees C) but higher than that of the Cu2Y-type ferrite (320 degrees C). The amount of the nonmagnetic impurity in this sample is estimated to be about 10 wt% by the electron probe micro analysis. We estimated the expected saturation magnetization to be 652 A m(2)/kg, by assuming the model of a Neel-type ferrimagnetic structure and the reduction of magnetization by the 10 wt% nonmagnetic impurity. This is consistent with the observed magnetization of 65.0 A m(2)/kg at 5 K. (C) 2014 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jmmm.2014.09.055
  DOI ID：10.1016/j.jmmm.2014.09.055, ISSN：0304-8853, eISSN：1873-4766, Web of Science ID：WOS:000344949800009
• Ultimate Physical Characterization of Biocomposites Constituted by Enzymes on Template of Organized Molecular Films of Organo-Modified Aluminosilicate with High Surface Coverage　　　　　　　　　　　　　　　
  Shuntaro Arai; Atsuhiro Fujimori
  SEN-I GAKKAISHI, Volume：70, Number：6, First page：109, Last page：113, Jun. 2014, [Reviewed]
  Organized molecular films adsorbed several bio-materials have been prepared by Langmuir-Blodgett method using an organo-modified. montmorillonite. In this method, organo-montmorillonite films play a template role of the lysozyme thin layer. Chemisorption of lysozyme to the anionic montmorillonite surface has supported by infrared spectra of multilayers. The bands of N-H bending and C=O stretching vibrations of lysozyme were clearly identified in the spectra of multilayers coated with chemisorbed lysozyme. The morphology of these film surfaces were observed by atomic force microscopy at mesoscopic scales. In the case of organo-modified montmorillonite adsorbed protease, it is also indicated that activity of chemisorbed protease was maintained up to 160 degrees C of annealing temperature. The thickness of the enzyme layer was also maintained. This conservation of steric structure of enzyme is ascribable to the formation of aggregate of adsorbed enzyme on the montmorillonite surface and the construction of sandwiched structure of enzyme between organo-montmorillonite..
  SOC FIBER SCIENCE TECHNOLOGY, Japanese, Scientific journal
  DOI：https://doi.org/10.2115/fiber.70.109
  DOI ID：10.2115/fiber.70.109, ISSN：0037-9875, Web of Science ID：WOS:000339983400008
• Formation and structure of fine multi-particle layered organo-modified zirconium dioxides fabricated by Langmuir-Blodgett technique　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Nanami Honda; Hayato Iwashita; Yohei Kaneko; Shuntaro Arai; Masao Sumita; Shuichi Akasaka
  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, Volume：446, First page：109, Last page：117, Apr. 2014, [Reviewed]
  Formation and structure of multilayered organization of organo-modified zirconium dioxide are investigated by surface pressure-area (pi-A) isotherms, out-of-plane and in-plane X-ray diffraction (XRD) analysis, and atomic force microscopy (AFM). In this study, solubilization technology of inorganic fine particles into general solvent has proposed and formation technology of highly ordered single-particle layer has also established by using that inorganic solution as "spreading solution" of the interfacial film. The surface modification of zirconia particles is performed using several long-chain carboxylic acids of different lengths. Accordingly, it is easily achieve a regular arrangement of ZrO2 particles to overcome the relatively weak van der Waals interactions between the inorganic materials. A Langmuir monolayer of these particles is extremely condensed. A multi-particle layered structure is constructed by the Langmuir-Blodgett (LB) technique. The out-of-plane XRD measurement of multilayered organization of stearate-modified ZrO2 particles confirms sharp peaks at 59 angstrom. AFM images on a mesoscopic scale of this single-particle layer of stearate-modified ZrO2 show the aggregate of particles with 50 nm diameters. However, fine particles with similar to 5 nm diameter are confirmed from high-resolution AFM observations in the case of single-particle layers transferred at low surface pressure. That is to say, a regular periodic structure along the c-axis and a hierarchical aggregated particle form are fabricated by Langmuir and LB techniques. (C) 2014 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2014.01.050
  DOI ID：10.1016/j.colsurfa.2014.01.050, ISSN：0927-7757, eISSN：1873-4359, Web of Science ID：WOS:000333488200015
• Improvement of thermal stability of enzyme via immobilization on Langmuir-Blodgett films of organo-modified aluminosilicate with high coverage　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Shuntaro Arai; Youichi Soutome; Masamichi Hashimoto
  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, Volume：448, First page：45, Last page：52, Apr. 2014, [Reviewed]
  Ultrathin films of regularly adsorbed biological molecules have been fabricated by means of the modified Langmuir-Blodgett (LB) method using an organo-modified aluminosilicate (montmorillonite). In this combined method, clay LB films play a template role in the formation of the lysozyme thin layer. Chemisorption of biological molecules to the anionic montmorillonite (MMT) surface was confirmed by a comparison between infrared spectra of multilayers of organo-clay and of chemisorbed lysozyme. The surface morphology of these monolayers was observed by atomic force microscopy. In the case of organo-modified aluminosilicate, it is also indicated that chemisorbed enzyme activity is possible to maintain until 160 degrees C at attempting to evaluation of the heat-resistance. The maintaining of enzyme activity at high temperature region is possible together with the maintaining of three-dimensional steric structure of enzyme. This maintaining of steric structure of enzyme is based on the formation of aggregate of adsorbed enzyme induced by epitaxial-growth from aluminosilicate surface and the construction of sandwiched structure of enzyme between organo-aluminosilicates. (C) 2014 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2014.01.085
  DOI ID：10.1016/j.colsurfa.2014.01.085, ISSN：0927-7757, eISSN：1873-4359, Web of Science ID：WOS:000334141100006
• Small ordered magnetic moment in a weak itinerant electron ferromagnet Sc3In　　　　　　　　　　　　　　　
  K. Kamishima; R. Note; T. Imakubo; K. Watanabe; H. A. Katori; A. Fujimori; M. Sakai; K. V. Kamenev
  JOURNAL OF ALLOYS AND COMPOUNDS, Volume：589, First page：37, Last page：41, Mar. 2014, [Reviewed]
  We performed neutron diffraction study of Sc-In alloy which indicates that the ordered magnetic moment in this material is intrinsically tiny. This tiny magnetic moment (0.04-0.05 mu(B)/Sc) is not caused by the uncompensated antiferromagnetic ordering of large magnetic moments. The temperature dependence of the resistivity is in proportion to T-3/2, which suggests that this material is naturally close to the quantum critical point where ferromagnetism vanishes. This is consistent with the fact that this material shows ferromagnetism in an extremely narrow range of compositions which is typical of materials exhibiting quantum critical phenomenon. In the vicinity of the Curie temperature the magnetization depends on magnetic fields as M-5 proportional to mu H-0. This behavior for itinerant ferromagnets can be explained by assuming that the total spin fluctuation amplitude is conserved. (C) 2013 Elsevier B. V. All rights reserved.
  ELSEVIER SCIENCE SA, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jallcom.2013.11.032
  DOI ID：10.1016/j.jallcom.2013.11.032, ISSN：0925-8388, eISSN：1873-4669, Web of Science ID：WOS:000330181400006
• Fabrication and structure of "polymer nanosphere multilayered organization"　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Yohei Kaneko; Takahiro Kikkawa; Satoshi Chiba; Yuji Shibasaki
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：418, First page：338, Last page：349, Mar. 2014, [Reviewed]
  We constructed a multiparticle layered organization of aromatic polyamides with rigid main chains and flexible side chains by the Langmuir-Blodgett (LB) technique, which resulted in a highly regular arrangement along the c-axis. The particle arrangement was estimated by performing out-of-plane X-ray diffraction (XRD) analysis and atomic force microscopic (AFM) observation. The results suggest that a doubleparticle layered structure (Y-type) is formed by the LB technique, forming amphiphilic particles at the air/ water interface. Copolymers with highly hydrophobic carbazole contents and both hydrogenated and fluorinated side-chains also formed a single-particle layer at the air/water interface and exhibited multiparticle layers by a LB technique. Therefore, it is possible to control the formation of single- and double-particle layered structure using these techniques. Further, it was found that multiparticle layered organization of polymer nanospheres and polymer nanosheets could be formed simultaneously with the same component material. (C) 2013 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2013.12.038
  DOI ID：10.1016/j.jcis.2013.12.038, ISSN：0021-9797, eISSN：1095-7103, Web of Science ID：WOS:000330748700044
• Formation of aggregates of DNA molecules chemisorbed on the organized films of comb copolymers containing s-triazine　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Makoto Taguchi; Shuntaro Arai
  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, Volume：443, First page：432, Last page：438, Feb. 2014, [Reviewed]
  Adsorption behavior of DNA molecules on comb copolymers containing 2-vinyl-4,6-diamino-1,3,5-triazine (VDAT) at the air/water interface and their molecular arrangement were investigated using surface pressure-area (pi-A) isotherms, infrared (IR) spectroscopy, polarized UV-vis spectroscopy, and atomic force microscopy (AFM). Newly hydrogenated and fluorinated binary comb copolymers containing VDAT as an adsorption template were synthesized by radical copolymerization. Based on the results of the pi-A isotherm of the monolayer on DNA aqueous solution, an increase in the value of molecular area per VDAT unit corresponds to an area of 20 angstrom(2). The IR spectrum of the transferred Langmuir-Blodgett (LB) multilayer indicates adsorption of DNA molecules by hydrogen bonding to the copolymer templates. AFM images show that the circular domains have 50-60 nm diameters. Adsorbed DNA molecules showed an absorption band at 260 nm and emitted fluorescence at 400 nm. Consistent with the results of polarized UV-vis spectroscopy, these absorption bands indicate weak polarized dependency. In addition, emission bands in the fluorescence spectrum of DNA adsorbed to the copolymer film showed red shift and became sharper than those of the DNA solution. (C) 2013 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2013.11.052
  DOI ID：10.1016/j.colsurfa.2013.11.052, ISSN：0927-7757, eISSN：1873-4359, Web of Science ID：WOS:000342501300060
• Transition of Morphology between Nanosheet and Nanosphere of Ternary Comb Copolymers with Hydrophobic Carbazole Ring Induced by Changes in Surface Pressure.　　　　　　　　　　　　　　　
  Y. Kaneko; T. Kikkawa; A. Fujimori
  Global J. Sci. Fron. Res., Volume：14, Number：1-B, First page：1, Last page：5, 2014, [Reviewed]
  English, Scientific journal
  ISSN：2249-4626
• Construction and Structural Estimation of Multilayered Organization of Polymer Nanosphere.　　　　　　　　　　　　　　　
  Y. Kaneko; T. Kikkawa; Y. Shibasaki; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：1, First page：75, Last page：78, 2014, [Reviewed]
  We fabricated a polymer nanosphere multilayered organization consisting of aromatic polyamides with rigid main chains and flexible side chains by the Langmuir–Blodgett (LB) technique, which resulted in a high regularity along the c-axis. The particle arrangement was estimated by performing out-of-plane X-ray diffraction (XRD) analysis and atomic force microscopic (AFM) observation. The results suggest that a double-particle layered structure (Y-type) is formed by the LB technique, forming amphiphilic particles at the air/water interface. In addition, copolymers with highly hydrophobic carbazole components and both hydrogenated and fluorinated side-chains also formed polymer nanoparticle at the air/water interface. Formation of single-particle layered structure was indicated. Therefore, it is possible to control the formation of single- and double-particle layered structure. Further, it was found that multiparticle layered organization of polymer nanospheres and polymer nanosheets could be formed simultaneously with the same component material.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.75
  DOI ID：10.14723/tmrsj.39.75, ISSN：1382-3469, CiNii Articles ID：130005004297
• Dependency of the Molecular "Shape" on Surface Morphology of Organized Molecular Films of Cyclic and Linear Block Copolymer of Polyethylene Oxide – Butyl Acrylate.　　　　　　　　　　　　　　　
  M. Hashimoto; Q. Meng; S. Honda; Y. Tezuka; T. Yamamoto; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：1, First page：83, Last page：86, 2014, [Reviewed]
  A "topological polymer chemistry" at air/water interface is investigated by using an amphiphilic linear and cyclic block copolymers. A cyclic copolymer and two kind of linear polymers (AB-type diblock and ABA-type triblock copolymers) with same components were used in the study. The relatively stable monolayers of these three kinds of copolymers were formed at the air/water interface. The analogous condensed tendency and temperature dependency were observed in surface pressure-area isotherms of three kinds of monolayers. It is considered that molecular orientation at air/water interface of two kinds of liner block copolymers is similar to that of cyclic block copolymer. From the result of atomic force microscopic observation of transfered films, monolayers of the three kinds of polymers have formed a very similar morphology at mesoscopic scale under the conditions at room temperature and the constant compression speed. It finds that ABA type triblock liner copolymer formed fiber-like surface morphology by the two-dimensional crystallization based on the low compression speed. On the other hand, cyclic block copolymer formed shapeless domain.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.83
  DOI ID：10.14723/tmrsj.39.83, ISSN：1382-3469, CiNii Articles ID：130005004299
• Molecular Arrangement of Organized Molecular Films of Linear and Cyclic Amphiphilic Block Copolymers with Different Shapes.　　　　　　　　　　　　　　　
  Q. Meng; M. Hashimoto; S. Honda; Y. Tezuka; T. Yamamoto; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：1, First page：79, Last page：82, 2014, [Reviewed]
  A "topological polymer chemistry" as a new concept in polymer science at the air/water interface is investigated by using amphiphilic linear and cyclic block copolymers consisting of butyl acrylate and ethylene oxide. The relatively stable monolayers of these two kinds of amphiphilic copolymers were formed at the air/water interface. In addition, these two kinds of amphiphilic copolymers constructed highly ordered Langmuir-Blodgett (LB) multilayers. In order to estimate the layered regularity under high temperature, the temperature-controlled out-of-plane X-ray diffraction (XRD) of LB films of amphiphilic linear and cyclic block copolymers was obtained. As a result, excellent heat-resistant propertyies of organized molecular films of the cyclic copolymer were confirmed. At room temperature, both copolymers showed clear diffraction peaks based on the formation of highly ordered layer structures. However, in the case of linear copolymers, layered structures were gradually disordered with heating. On the other hand, regularity of LB multilayers of the cyclic copolymers did not change with heating up to 50 °C. In this case, higher order reflections (d₀₀₂, d₀₀₃) of XRD are also unchanged, which means the formation of highly ordered regularity.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.79
  DOI ID：10.14723/tmrsj.39.79, ISSN：1382-3469, CiNii Articles ID：130005004298
• Formation and Structure of Single Particle Layer Induced to Construction of New Type Two-dimensional Organic / Inorganic Nanohybrids.　　　　　　　　　　　　　　　
  N. Honda; K. Hashimoto; H. Shibata; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：1, First page：91, Last page：94, 2014, [Reviewed]
  Formation and structure of single particle layer of organo-zinc oxide are investigated by surface pressure-area (π-A) isotherm, out-of-plane X-ray diffraction (XRD) analysis, and atomic force microscopy (AFM). In this study, solubilization technology of inorganic fine particles into general solvent have proposed and formation technology of single particle layer have established by using that inorganic solution as "spreading solution" of the interfacial film. The surface modification of ZnO is performed using long-chain carboxylic acid. Accordingly, it is easily achieve a regular arrangement of ZnO to overcome the relatively weak van der Walls interactions between the inorganic materials. A Langmuir monolayer of these particles is condensed. A multi-particle layered structure is constructed by the Langmuir-Blodgett (LB) technique. The results of the out-of-plane XRD measurements of the single particle layer for organo-ZnO clearly confirmed a sharp peak at 42 Å. This reflection have came from distance between ZnO in layer structure. AFM image of this single particle layer of organo-ZnO showed particle assembly with uniform height of 60 nm. These aggregated particles formed large two-dimensional crystal. That is to say, a regular periodic structure along the c-axis and condensed single particle layer have been fabricated by Langmuir and LB techniques.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.91
  DOI ID：10.14723/tmrsj.39.91, ISSN：1382-3469, CiNii Articles ID：130005004301
• Extreme Physical Property of the Enzyme Layered Organization. –The Functional Innovation by Using a Template of Layered Organization of Heat-Resistant and Low-Defect Organic / Inorganic Two-Dimensional Nano-Hybrid–　　　　　　　　　　　　　　　
  S. Arai; SA; bt Che Azmi; M. Kubota; K. Kurosaka; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：1, First page：87, Last page：90, 2014, [Reviewed]
  Ultrathin films of regularly adsorbed biological molecules have been fabricated by means of the modified Langmuir-Blodgett (LB) method using an organo-modified montmorillonite (MMT). Adsorption of enzymes onto the anionic silicate surface could be confirmed by a comparison of the IR spectra of multilayers of organo-modified clay and those of lysozyme-adsorbed films. The IR bands of lysozyme were clearly confirmed in the spectra of enzyme-adsorbed multilayers. Enzyme activity of the enzyme-adsorbed multilayers was maintained at high temperatures, up to 160 °C. This suggests that three-dimensional structure of enzyme inserted in clay particle were maintained at high temperature.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.87
  DOI ID：10.14723/tmrsj.39.87, ISSN：1382-3469, CiNii Articles ID：130005004300
• Nanostructural Control of Luciferase Chemisorbed on the Interfacial Monolayer of Organo-modified Aluminosilicate as a Template.　　　　　　　　　　　　　　　
  SA. bt Che Azmi; S. Arai; M. Kubota; K. Kurosaka; A. Fujimori
  Trans. Mar. Res. Soc. Jpn, Volume：39, Number：1, First page：95, Last page：98, 2014, [Reviewed]
  Bioluminescence is widely distributed in various microorganisms, insects, shrimps, squid and fish. Bioluminescence can be also used as a reliable reporter for the assessment or monitoring of various aquatic samples containing toxicants such as pesticides, polychlorinated Biphenyls (PCBs), polyaromatic hydrocarbons, fuels, and heavy metals. In this study, luciferase were cultured from squid. Structured molecular films of adsorbed luciferase have been fabricated by means of a modified LB method using organo-modified clay. Chemisorption of luciferase to the anionic montmorillonite (MMT) surface was confirmed by a comparison between infrared spectra of multilayers of organo-clay and of chemisorbed luciferase. The bands of ν_C=O and δ_N-H of luciferase were clearly identified in the spectra of multilayers coated with chemisorbed biomolecules. Luminescence spectra of buffer solution containing luciferase and multilayers of clay/luciferase suggest that enzyme activity were maintained in the case of multilayers of clay/luciferase.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.95
  DOI ID：10.14723/tmrsj.39.95, ISSN：1382-3469, CiNii Articles ID：130005004302
• Morphological Control for Aggregates of DNA Molecules Chemisorbed on the Organized Films of Ternary Comb Copolymers Containing s-Triazine Rings.　　　　　　　　　　　　　　　
  M. Taguchi; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：2, First page：141, Last page：144, 2014, [Reviewed]
  We investigated adsorption behavior of DNA molecules to ternary comb copolymers containing 2-vinyl-4, 6-diamino-1, 3, 5-triazine (VDAT) at air/water interface and their molecular arrangement. A newly ternary comb copolymers as adsorption template was synthesized by radical copolymerization of VDAT, octadecyl acrylate (OA), 2-(perfluorodecyl)ethyl methacrylate (FF₁₀EMA). The IR spectrum and UV-vis spectrum of transferred LB multilayers indicates adsorption of DNA molecules by ternary copolymer templates. There were hydrogenated domains at 40–50 nm diameter scales in phase separated surface structure of Z-type monolayers. Furthermore, adsorbed DNA molecules showed segment domain at 100–200 nm scales. Fluorescence emission bands of adsorbed DNA to copolymer film showed red-shift and became sharper than the one of their so lution. It was caused by formation of aggregate of π-conjugated system in the DNA with uniform aggregation number. In the case of copolymer film containing N-vinyl carbazole (NVCz), small domain at 30-40 nm scales and DNA aggregate with various aggregation number were confirmed.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.141
  DOI ID：10.14723/tmrsj.39.141, ISSN：1382-3469, CiNii Articles ID：130005004312
• Elucidation of Internal Fine Structure of "Polymer Nanosphere" in the Interfacial Particle Film.　　　　　　　　　　　　　　　
  T. Kikkawa; Y. Kaneko; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：2, First page：133, Last page：136, 2014, [Reviewed]
  Transition behavior from a monolayer on the water surface to a single particle layer of a ternary comb copolymer with highly hydrophobic carbazole units and both hydrogenated and fluorinated side-chains have been investigated by surface pressure−area (π−A) isotherm and atomic force microscopic (AFM) observation. Moreover, we fabricated a polymer nanosphere multilayered organization consisting of such polymer nanoparticles by the Langmuir–Blodgett (LB) technique, and estimated the particle arrangement by performing out-of-plane X-ray diffraction (XRD) analysis. This polymer monolayer is able to form the polymer nanosheet with amorphous layers. The multiparticle layered organization of polymer nanosphere is fabricated from the single particle layer by the LB technique. These layer structures have highly regular arrangement along the c-axis. Further, we investigated molecular arrangement inside of polymer particles by performing in-plane XRD analysis and fluorescence spectroscopy. This copolymer formed side-chain crystals inside the particles. Fluorocarbon chains had a short spacing of 5.0 Å for the two-dimensional side-chain lattice whereas hydrocarbon chains formed sub-cell at short spacing of 4.2 Å. In addition, aggregated structure of carbazole rings is formed by π-π interaction.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.133
  DOI ID：10.14723/tmrsj.39.133, ISSN：1382-3469, CiNii Articles ID：130005004310
• Study on Crystalline Transparent Films of Perfluorinated Copolymer / Heat-resistant Organo-aluminosilicate Nano-composite.　　　　　　　　　　　　　　　
  Y. Soutome; T. Kanehira; S. Arai; M. Kubota; K. Kurosaka; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：2, First page：189, Last page：192, 2014, [Reviewed]
  Nanocomposite of poly[tetrafluoroethylene-co-perfluoroethylvinylethel] (abbrev. PFA) / long-chain quaternary phosphonium modified clay (C₁₆-P-MMT) have been prepared by melt-compounding process using fluorinated crystalline polymer and C₁₆-P-MMT. The structures of polymer and dispersed C₁₆-P-MMT in matrix were investigated by using Wide angle X-ray diffraction (WAXD). The crystallization temperature was determined using a Differential Scanning Calorimetry (DSC). From WAXD profiles, it was found that C₁₆-P-MMT were almost uniformly dispersed in matrix, while the characteristic diffraction profiles of C₁₆-P-MMT are not shown in WAXD profiles of nanocomposite. Further, the intensity of most characteristic diffraction profile of PFA is increased for the composite sample as compared with that of the neat PFA. And also the crystallite size of the PFA is increased. These results suggest that degree of crystallinity are increased for the composite sample as compared with that of the neat PFA. In addition, a crystalline peak these nanocomposites showed in DSC thermograms (first cooling) was shifted to higher temperature side than of neat PFA. It is suggested that the origin of this thermal behavior corresponds to occurrence the nucleator effect of C₁₆-P-MMT to the matrix PFA. Further, transparent PFA / C₁₆-P-MMT nanocomposite film was constructed by drawn.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.189
  DOI ID：10.14723/tmrsj.39.189, ISSN：1382-3469, CiNii Articles ID：130005004323
• Mono-"particle" Dispersion of Organo-modified Nanodiamond in Fluoropolymer Matrix of Crystalline Transparent Films of Semifluorinated Polymer / Filler Nanocomposite.　　　　　　　　　　　　　　　
  T. Kanehira; Y. Soutome; N. Honda; S. Akasaka; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：2, First page：231, Last page：234, 2014, [Reviewed]
  The poly[vinylidenefluoride-co-(tetrafluoroethylene)] (P(VDF-TeFE)) / organo-modified nanodiamond (organo-ND) composite were prepared by the melt-compounding process using fluorinated crystalline polymer and organo-ND. The structure of the polymer and the structures of dispersed organo-ND particles in the polymer matrix were investigated by using an atomic force microscope (AFM). The crystallization temperature was determined using a Differential Scanning Calorimetry (DSC). From the AFM image, the organo-ND disperses in the polymer matrix. These results suggest that organo-ND with hydrocarbon chain can be dispersed in a fluorinated copolymer. From DSC thermograms (first cooling), the crystallization peak of DSC thermograms of the composite appeared at slightly higher temperature than that of the neat P(VDF-TeFE). These results suggest that the polymer crystallizes epitaxially from organo-ND surface.
  The Materials Research Society of Japan, Japanese
  DOI：https://doi.org/10.14723/tmrsj.39.231
  DOI ID：10.14723/tmrsj.39.231, ISSN：1382-3469, CiNii Articles ID：130005004332
• Material Innovation of Organo-aluminosilicate ―Development of Heat-resistant Powder with High Coverage, and Organized Film with High Regularity―　　　　　　　　　　　　　　　
  T. Kikkawa; S. Arai; M. Hashimoto; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：39, Number：2, First page：243, Last page：246, 2014, [Reviewed]
  We have attempted to fabricate heat-resistant ultrathin organized molecular films of several organo-modified montmorillonite (MMT) by applying the Langmuir-Blodgett (LB) method. Thermal degradation temperature of long-chain-phosphonium-modified MMT (C₁₆-P-MMT) in bulk has been found to exceed 300 °C. The out-of-plane X-ray diffraction patterns observed for multilayer of C₁₆-P-MMT with varying the sample temperature have indicated annealing effects on the film regularity, i.e., remarkable improvement of the long range order at the initial stage (up to 100 °C) and, in contrast, at the subsequent stage gradual collapse of the layered structure.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.39.243
  DOI ID：10.14723/tmrsj.39.243, ISSN：1382-3469, CiNii Articles ID：130005004335
• Improved photovoltaic performance of crystalline-Si/organic Schottky junction solar cells using ferroelectric polymers　　　　　　　　　　　　　　　
  Q. Liu; I. Khatri; R. Ishikawa; A. Fujimori; K. Ueno; K. Manabe; H. Nishino; H. Shirai
  APPLIED PHYSICS LETTERS, Volume：103, Number：16, First page：163503, Oct. 2013, [Reviewed]
  The effect of inserting an ultrathin layer of ferroelectric (FE) poly(vinylidene fluoridetetrafluoroethylene) P(VDF-TeFE) at the crystalline (c-)Si/poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) interface of a c-Si/PEDOT:PSS Schottky junction solar cell is demonstrated. P(VDF-TeFE) is a highly resistive material that exhibits a large, permanent, internal polarization electric field by poling of molecular dipole among the polymer chains. Because of these properties, performance can be enhanced by adjusting the thickness of the FE layer and subsequent poling process. Inserting a 3-nm-thick FE layer increases the power conversion efficiency g from 10.2% to 11.4% with a short-circuit current density J(sc) of 28.85 mA/cm(2), an open-circuit voltage V-oc of 0.57 V, and a fill factor FF of 0.692. Subsequent poling of the FE layer under a reverse DC bias stress increased g up to 12.3% with a J(sc) of 29.7 mA/cm(2), a V-oc of 0.58 V, and an FF of 0.71. The obtained results confirm that the spontaneous polarization of the FE layers is responsible for the enhancement of g, and that the polarization-based enhancement works if the FE layer is highly crystalline. These findings originate from efficient charge extraction to the electrodes and a suppression of non-radiative recombination at the c-Si/PEDOT: PSS interface. (C) 2013 AIP Publishing LLC.
  AMER INST PHYSICS, English, Scientific journal
  DOI：https://doi.org/10.1063/1.4826323
  DOI ID：10.1063/1.4826323, ISSN：0003-6951, eISSN：1077-3118, Web of Science ID：WOS:000326148700086
• Structural Estimation of Functional Organized Molecular Films by Using Polarized Near-edge X-ray Absorption Fine Structure Spectroscopy　　　　　　　　　　　　　　　
  Shuntaro Arai; Atsuhiro Fujimori
  BUNSEKI KAGAKU, Volume：62, Number：7, First page：611, Last page：625, Jul. 2013, [Reviewed]
  This paper presents an overview based on the latest topics concerning detailed investigations of the molecular orientation in organized molecular films from the monomolecular layer to the several-layer levels by using polarized near-edge X-ray absorption fine-structure spectroscopy (NEXAFS) while taking advantage of the polarization and absorption of soft X-rays. Especially, while focusing on functional polymers (containing copolymers) having a plurality of functional groups in the molecular structure, an approach for elucidating the ultimate structure formed in sub-nanometer scale spaces is introduced.
  JAPAN SOC ANALYTICAL CHEMISTRY, Japanese, Scientific journal
  DOI：https://doi.org/10.2116/bunsekikagaku.62.611
  DOI ID：10.2116/bunsekikagaku.62.611, ISSN：0525-1931, Web of Science ID：WOS:000322353700005
• Formation and structure of Langmuir-Blodgett films of organo-modified aluminosilicate with high surface coverage　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Shuntaro Arai; Jun-ichi Kusaka; Munehiro Kubota; Kei-ichi Kurosaka
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：392, First page：256, Last page：265, Feb. 2013, [Reviewed]
  We have developed an effective organo-modification method at the organic solvent/distilled water interface of natural aluminosilicate clay surfaces. We also investigated the molecular arrangement of organo-modified aluminosilicate with high surface coverage in Langmuir-Blodgett films (LB) by performing out-of-plane and in-plane X-ray diffraction (XRD) measurements. In addition, the surface morphology of mixed monolayers of organo-modified aluminosilicate and several biodegradable polymers (e.g., poly (L-lactide), PLLA) was also characterized by atomic force microscopy (AFM). The in-plane XRD results of multilayers of organo-modified aluminosilicate formed by the LB method indicate the formation of a two-dimensional lattice of hydrocarbons on the aluminosilicate surface. These hydrocarbons of organo-modified reagents packed hexagonal or orthorhombic in films. Based on our experimental findings, the LB technique enabled the formation of a densely packed organo-modified aluminosilicate monolayer at the water surface. Furthermore, for mixed monolayer systems comprising an organo-modified clay with high surface coverage and biodegradable polymers, a miscible surface was observed by AFM on a mesoscopic scale, whereas those with low surface coverage formed phase-separated structures. (c) 2012 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2012.08.075
  DOI ID：10.1016/j.jcis.2012.08.075, ISSN：0021-9797, Web of Science ID：WOS:000314136800034
• Fabrication and Structural Estimation of "Polymer Nanosphere Multilayered Organization"　　　　　　　　　　　　　　　
  Atsuhiro Fujimori
  ICOMF14 - 14TH INTERNATIONAL CONFERENCE ON ORGANIZED MOLECULAR FILMS (LB 14), Volume：4, 2013, [Reviewed]
  We have newly constructed "multi-particle layered organization" of aromatic polyamide (poly-(N-alkylated benzamide), abbrev. PABA(n), n : carbon number of side-chains) derivatives having both a rigid main chain and a flexible side chains by a Langmuir-Blodgett (LB) technique. This organization is composed of the build-up particle layers with highly regular arrangement along the c-axis. The particle arrangement of this organization of polymer nanosphere was estimated by performing out-of plane X-ray diffraction (XRD), and atomic force microscopic (AFM) observation. In addition, it is also proposed that ternary comb copolymers with carbazole units and both hydrogenated and fluorinated side-chains are candidates of newly typed "polymer nanosheet" material. These copolymers with high hydrophobic carbazole contents also formed single particle layer at air/water interface and "multi-particle layered organization" was constructed by a LB technique. Therefore, it was found that "multi-particle layered organization of polymer nanosphere" and "polymer nanosheet" are simultaneously formed by same component copolymer materials with hydrophobic carbazole units.
  E D P SCIENCES, English, International conference proceedings
  DOI：https://doi.org/10.1051/matecconf/20130403002
  DOI ID：10.1051/matecconf/20130403002, ISSN：2261-236X, Web of Science ID：WOS:000342318800009
• Synthesis of a new U-type hexaferrite Ba4Cu2Fe36O60.　　　　　　　　　　　　　　　
  R. Tajima; K. Kamishima; K. Kakizaki; N. Hiratsuka; A. Fujimori; M. Sakai; K. Watanabe
  Trans. Mat. Res. Soc. Jpn, Volume：38, Number：3, First page：451, Last page：454, 2013, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.38.451
  DOI ID：10.14723/tmrsj.38.451
• Morphological Transition from Nanosheet to Nanosphere in Ternary Comb Copolymers with Carbazole Rings　　　　　　　　　　　　　　　
  Yohei Kaneko; Atsuhiro Fujimori
  CHEMISTRY LETTERS, Volume：41, Number：10, First page：1183, Last page：1184, Oct. 2012, [Reviewed]
  The transition behavior of ternary comb copolymers containing carbazole rings from a monolayer on a water surface to a single particle layer has been investigated by surface pressure-area isotherms and atomic force microscopy. It has been found that these copolymers form a monolayer in the low-surface-pressure region and a single particle layer in the high-surface-pressure region.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2012.1183
  DOI ID：10.1246/cl.2012.1183, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000310931600058
• Nanostructural and Morphological Control of Biological Molecules Arranged by Using Langmuir-Blodgett Films of Organo-modified Aluminosilicate as Templates　　　　　　　　　　　　　　　
  Shuntaro Arai; Jun-Ichi Kusaka; Munehiro Kubota; Kei-ichi Kurosaka; Atsuhiro Fujimori
  CHEMISTRY LETTERS, Volume：41, Number：10, First page：1181, Last page：1182, Oct. 2012, [Reviewed]
  Clay Langmuir-Blodgett (LB) films play the role of a template in the formation of lysozyme thin layers. Chemisorption of biological molecules onto the anionic montmorillonite surface is confirmed by comparing the IR spectra of organoclay multilayers and the chemisorbed lysozyme. The difference between the height of the monolayers for the organo-modified aluminosilicates and that for their adsorbed lysozyme is about 9 nm. This value is almost twice the length of the lysozyme along the long axis.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2012.1181
  DOI ID：10.1246/cl.2012.1181, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000310931600057
• Precise structure analysis and gas transport properties of crystalline fluorinated copolymer　　　　　　　　　　　　　　　
  Tatsuki Nyuui; Go Matsuba; Shuichi Sato; Kazukiyo Nagai; Atsuhiro Fujimori
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：244, Aug. 2012, [Reviewed]
  AMER CHEMICAL SOC, English
  ISSN：0065-7727, Web of Science ID：WOS:000324621808406
• Formation of Flat, Homogeneous Surfaces of Organized Molecular Films of Three-Armed Polymerizable Amphiphiles with Metal-Scavenging Properties　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Makoto Taguchi; Sho Hakozaki; Kenji Kamishima; Bungo Ochiai
  LANGMUIR, Volume：28, Number：29, First page：10830, Last page：10837, Jul. 2012, [Reviewed]
  Surface complexing (i.e., metal-bridged polymerization in this study) of a three-armed amphiphilic compound with metal-scavenging properties has been investigated using the surface pressure-area (pi-A) isotherms of a Langmuir monolayer from the subphase. Inductively coupled plasma mass spectrometry (ICP-MS) was also carried out on eluted solutions from corresponding multilayers of the solid. Furthermore, the molecular arrangement and surface morphology of organized molecular films of the resultant comb polymer were estimated by in-plane and out-of-plane X-ray diffraction (XRD) and by atomic force microscopy. From an analysis of the wide-angle X-ray diffraction of the corresponding monomer in the bulk, the long hydrocarbon chains are observed to pack hexagonally in the solid state. Compared to their monolayer on distilled water as the subphase, a polymerized monolayer on a buffer solution containing Cd2+ ions is remarkably expanded at 15 degrees C. From ICP-MS and IR measurements, it is found that this monolayer stoichiometrically contains Cd2+ ions on the -SH group. It is found by XRD that highly ordered layer structures and regular 2D lattices are constructed in the organized molecular films of the Cd-bridged comb polymer. Furthermore, the surface morphology of Langmuir-Blodgett films fabricated from the monolayers on a buffer solution containing Cd2+ and Pd2+ shows flat and smooth domains upon metal scavenging and polymerization.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/la301126y
  DOI ID：10.1021/la301126y, ISSN：0743-7463, Web of Science ID：WOS:000306674000025
• Nanostructural Control of Biological Molecules Arranged by Using Langmuir-Blodgett Films of Organo-modified Alminosilicate as a Template.　　　　　　　　　　　　　　　
  S. Arai; J. Kusaka; M. Kubota; K. Kurosaka; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：37, Number：3, First page：361, Last page：364, 2012, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.37.361
  DOI ID：10.14723/tmrsj.37.361
• Morphological Transition from Nanosheet to Nanosphere of Ternary Comb Copolymers with Carbazole Rings Induced by an Increase in Surface Pressure.　　　　　　　　　　　　　　　
  Y. Kaneko; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：37, Number：2, First page：291, Last page：294, 2012, [Reviewed]
  Transition behavior from a monolayer on the water surface to a single particle layer of a ternary comb copolymer containing carbazole rings have been investigated by surface pressure-area isotherm, atomic force microscopy, X-ray diffraction. This polymer monolayer is able to form the "polymer nanosheet" with amorphous layers and strong interaction between main-chains prepared by the Langmuir-Blodgett (LB) technique. Further, the single particle layer is able to form the multi-particle layered organization of "polymer nanosphere" by the LB technique. This ternary comb copolymers were synthesized by radical copolymerization with hydrogenated and fluorinated long-chain vinyl compounds. Poly(N-vinylcarbazole) homopolymer formed a single particle layer on the water surface immediately after spreading. Spontaneous "particulation" behavior is accelerated by incorporation of carbazole units in ternary copolymer films. Organized molecular film of these copolymers formed a monolayer on the water surface below 10 m Nm^–1, and the monolayer were transformed to a single particle layer above 15 m Nm^–1. Further, "polymer nanosphere" of these ternary comb copolymers showed an absorption band around 230 nm and emitted fluorescence at 390 nm. The emitted band in fluorescence spectrum of "polymer nanosphere" was red-shifted with respect to the one in the solution.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.37.291
  DOI ID：10.14723/tmrsj.37.291, ISSN：1382-3469, CiNii Articles ID：130003399104
• Fine Structure of Multi-particle Layered Organization for Organo-modified Zirconium Dioxides Fabricated by the Langmuir-Blodgett Technique.　　　　　　　　　　　　　　　
  H. Iwashita; S. Hakozaki; S. Kawaguchi; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：37, Number：2, First page：299, Last page：302, 2012, [Reviewed]
  Formation and structure of organo-modified zirconium dioxides of multi-particle layered organization were investigated by out-of plane and in-plane X-ray diffraction (XRD) and atomic force microscopy (AFM). The surface modification of zirconia particle was performed by several long-chain carboxylic acids with different lengths. Langmuir monolayers of these particles were extremely condensed on the water surface. Multi-particle layered organization was constructed by the Langmuir-Blodgett (LB) technique. From the results of out-of plane XRD measurement of the multilayers of oleic acid-modified ZrO₂ particles, a sharp peak was clearly observed at 52 Å. AFM image at mesoscopic scales of this single particle layer show particle assembly at 50 nm diameters. However, fine particles at about 5 nm diameters are confirmed in the case of high-resolution AFM observation to the mono-particle films transferred at low surface pressure region. Therefore, it is found that regular periodic structure along the c-axis and a hierarchical aggregated particle form were fabricated by Langmuir and LB technique.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.37.299
  DOI ID：10.14723/tmrsj.37.299, ISSN：1382-3469, CiNii Articles ID：130003399106
• Control of Arrangement for DNA Molecules Chemisorbed to the Organized Molecular Films of Comb Copolymers Containing s-Triazine.　　　　　　　　　　　　　　　
  M. Taguchi; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：37, Number：2, First page：287, Last page：290, 2012, [Reviewed]
  Adsorption behavior of DNA molecules to comb copolymers containing 2-vinyl-4, 6-diamino-1, 3, 5-triazine (VDAT) at air/water interface and their molecular arrangement have investigated by surface pressure-area (π-A) isotherm, IR spectroscopy, polarized UV-vis spectroscopy, and atomic force microscopy. A newly hydrogenated and fluorinated binary comb copolymers containing VDAT as adsorption template was synthesized by radical copolymerization. From the result of π-A isotherm of monolayer on DNA aqueous solution, an increase of value for molecular area per VDAT unit corresponds to 20 Ų. The IR spectrum of transferred LB multilayer indicates adsorption of DNA molecules by hydrogen bonding to the copolymer templates. AFM images show the circular domain at 50-60 nm diameters. Adsorbed DNA molecules showed the absorption band at 260 nm and emitted fluorescence at 400 nm. From the results of polarized UV-vis spectroscopy, these absorption bands indicate faint polarized dependency. In addition, emission bands in fluorescence spectrum of adsorbed DNA to copolymer film showed red-shift and became sharper than the one of their solution.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.37.287
  DOI ID：10.14723/tmrsj.37.287, ISSN：1382-3469, CiNii Articles ID：130003399103
• Molecular Arrangement of Organo-modified Aluminosilicate in Langmuir-Blodgett Films and Mixed Monolayer Behavior with Biodegradable Polymers.　　　　　　　　　　　　　　　
  J. Kusaka; S. Arai; M. Kubota; K. Kurosaka; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：37, Number：2, First page：279, Last page：282, 2012, [Reviewed]
  We investigated molecular arrangement of organo-modified aluminosilicate with high surface coverage in Langmuir-Blodgett (LB) films by performing out-of-plane and in-plane X-ray diffraction (XRD) measurements. In addition, the surface morphology of mixed monolayers of organo-modified aluminosilicate and several biodegradable polymers [e.g poly(L-lactide), PLLA] was also characterized by atomic force microscopy (AFM). The in-plane XRD results of multilayers of organo-modified aluminosilicate formed by the LB method indicate the formation of a two-dimensional lattice of hydrocarbons on the aluminosilicate surface. These hydrocarbons of organo-modified reagents packed hexagonal in films. Based on our experimental findings, the LB technique enabled the formation of a densely packed organo-modified aluminosilicate monolayer at the water surface. Furthermore, for mixed monolayer systems comparising an organo-modified clay with high surface coverage and biodegradable polymers, a miscible surface was observed by AFM on a mesoscopic scales, whereas those with low surface coverage formed phase-separated structures.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.37.279
  DOI ID：10.14723/tmrsj.37.279, ISSN：1382-3469, CiNii Articles ID：130003399101
• Effect of Molecular Weight Distribution on the Crystallinity and Monolayer Morphology of N-alkylated Poly (p-benzamides).　　　　　　　　　　　　　　　
  Y. Yanagimachi; S. Chiba; Y. Shibasaki; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：37, Number：2, First page：295, Last page：298, 2012, [Reviewed]
  We synthesized new aromatic polyamides (poly-(N-alkylated benzamides), abbrev. PABA_n) having both a rigid main chain and a flexible side chain with different lengths. We investigated the solid-state structures, that is, the molecular orientation and surface morphology, of organized molecular films of PABA_n by performing surface pressure-area (π-A) isotherm, and atomic force microscopy (AFM) measurements. The solid-state structure of poly-(N-methyl benzamide) (PABA₁) belonged to the monoclinic system, whereas PABA₃, PABA₄, and PABA₅ showed an orthorhombic packing pattern. PABA₇ and PABA₈ formed amorphous polymers. In the case of PABA₁₇, a two-dimensional hexagonal lattice was formed as a subcell consisting of side chains. These polymer monolayers were highly condensed on a water surface at 15 °C. At the air/water interface, changes in "particulation" behavior are confirmed in the system of PABA₃ controlled molecular weight distribution. Monomolecular layer of PABA₁₆ with narrow molecular weight distribution forms the large circular domain whereas existence of many angular domains for monolayer of PABA₁₆ with broad one.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.37.295
  DOI ID：10.14723/tmrsj.37.295, ISSN：1382-3469, CiNii Articles ID：130003399105
• Fabrication of Highly Order Layered Organization of Polymer Nano-sphere.　　　　　　　　　　　　　　　
  Chiba; S. Arai; Y. Kaneko; M. Taguchi; Y. Shibasaki; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：37, Number：2, First page：283, Last page：286, 2012, [Reviewed]
  We have newly constructed "multi-particle layered organization" of aromatic polyamide(poly-(N-alkylated benzamide), abbrev. PABA_n, n : carbon number of side-chains) derivatives having both a rigid main chain and a flexible side chains by a Langmuir-Blodgett (LB) technique. This organization is composed of the build-up particle layers with highly regular arrangement along the c-axis. The particle arrangement of this organization of polymer nanosphere was estimated by performing out-of plane X-ray diffraction (XRD), and atomic force microscopic (AFM) observation. In addition, it is also proposed that ternary comb copolymers with carbazole units and both hydrogenated and fluorinated side-chains are candidates of newly typed "polymer nanosheet" material. These copolymers with high hydrophobic carbazole contents also formed single particle layer at air/water interface and "multi-particle layered organization" was constructed by a LB technique. Therefore, it was found that "multi-particle layered organization of polymer nanosphere" and "polymer nanosheet" are simultaneously formed by same component copolymer materials with hydrophobic carbazole units.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.37.283
  DOI ID：10.14723/tmrsj.37.283, ISSN：1382-3469, CiNii Articles ID：130003399102
• One-pot Synthesis of Manganese Oxide Nanoparticles from Microemulsion Systems　　　　　　　　　　　　　　　
  Taiki Miyazawa; Keigo Matsuda; Atsuhiro Fujimori; Yoshimune Nonomura
  CHEMISTRY LETTERS, Volume：40, Number：11, First page：1262, Last page：1263, Nov. 2011, [Reviewed]
  Manganese oxide nanoparticles can be obtained simply by mixing surfactant/water/oil ternary systems containing dialkyl-dimethylammonium chloride, manganese(II) nitrate hexahydrate, and n-hexane. This finding is valuable in the design of a one-pot synthesis of nanoparticles from microemulsion systems.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2011.1262
  DOI ID：10.1246/cl.2011.1262, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000297606600020
• Formation and Structure of Organized Molecular Films for Organo-Modified Montmorillonite and Mixed Monolayer Behavior With Poly(L-lactide)　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Jun-Ichi Kusaka; Rintaro Nomura
  POLYMER ENGINEERING AND SCIENCE, Volume：51, Number：6, First page：1099, Last page：1107, Jun. 2011, [Reviewed]
  We investigated the molecular orientation and surface morphology of organized molecular films with regard to solid-state structures for organo-modified montmorillonites by surface pressure-area (pi - A) isotherm, inplane and out-of plane X-ray diffraction (XRD), and atomic force microscopy (AFM). From the results of out-of plane XRD, formation of highly ordered layer structure was confirmed in these clay Langmuir-Blodgett (LB) film. Further, two-dimensional lattice of long alkyl chain of organo-modified parts packed hexagonally or orthorhombically in the films. Surface morphology of Z-type monolayers on solid of organo-modified montmorillonites indicates heterogeneous modification ratio in montmorillonite surface by AFM observation. In addition, monolayer behavior on the water surface and mesoscopic morphological formation on solid of mixed films of organo-modified montmorillonite and poly-(L-lactide) (PLLA) were investigated by pi - A isotherm and AFM. Collapsed surface pressures are independent on the mixed ratio, and indicate almost constant value in their isotherms. This tendency is a peculiarity of immiscible system. From the result of AFM observation, phase separated structure was confirmed in mesoscopic scales. This phase separated morphology remarkably varied with mixed ratio. POLYM. ENG. SCI., 51: 1099-1107, 2011. (C) 2011 Society of Plastics Engineers
  WILEY-BLACKWELL, English, Scientific journal
  DOI：https://doi.org/10.1002/pen.21912
  DOI ID：10.1002/pen.21912, ISSN：0032-3888, Web of Science ID：WOS:000290517900010
• Two-dimensional Polymorphisms of Organized Molecular Films for Charge-transfer Complexes Containing Metal(dmit)2 Unit.　　　　　　　　　　　　　　　
  R. Itagaki; Y. Tatewaki; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：36, Number：2, First page：141, Last page：144, 2011, [Reviewed]
  We investigated the two-dimensional polymorphisms in organized molecular films of dialkylammonium-M bis(1, 3-dithiole-2-thione-4, 5-dithiolate) (abbrev. (dmit)₂, M = Ni) charge-transfer complexes using the surface pressure-area (π-A) isotherm, in-plane and out-of plane X-ray diffractions (XRD). Out-of plane and in-plane XRD measurements revealed that transition of molecular arrangement in layer structure along the c-axis and packing mode of molecules in ab-plane were occurred in organized film, respectively. In addition, arrangement of metal(dmit)₂ unit in complexes were changed from a high density packing to a low density packing in two-dimensional plane with decrease of subphase temperature. These structural changes appear to be caused by weakening of π-π interaction between metal(dmit)₂ units based on decrease of mobility. These results were associated with expansion behavior of monolayer on the water surface at low temperature. On the other hand, metal(dmit)₂ units of complex having longer alkyl chain form the low density packing at almost all temperature region. As a reason of this phenomenon, enhancement of van der Waals interaction between alkyl chains with increase of number of carbons is suggested. Consequently, these two-dimensional polymorphic behaviors are based on the competition between van der Waals interaction of alkyl chain and π-π interaction between functional groups.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.36.141
  DOI ID：10.14723/tmrsj.36.141, ISSN：1382-3469, CiNii Articles ID：130005004113
• Epitaxial Growth of Conductive Charge-transfer Complex in the Organized Molecular Film on Fluorinated Copolymer as Template.　　　　　　　　　　　　　　　
  R. Itagaki; J. Kusaka; M. Kubota; K. Kurosaka; Y. Tatewaki; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：36, Number：2, First page：169, Last page：172, 2011, [Reviewed]
  Epitaxial growth of organized molecular films of alkylammonium-Au bis(1, 3-dithiole-2-thione-4, 5-dithiolate) ((dmit)₂) charge-transfer complex on fluorinated copolymer as template estimated by in-plane X-ray diffraction (XRD). In the single crystal, didodecylammonium-Au(dmit)₂ molecules packed triclinic lattice. From the in-plane XRD measurement of multilayers on hydrogenated solids, alkyl-chains of this complex also formed triclinic system. The orthorhombic packing of this complex film formed on fluorinated crystalline polymer as substrate. This structural transition is induced by crystal structure of fluorinated copolymer as template. On the other hand, disordered molecular arrangement in these two-dimensional films formed on the amorphous fluorinated copolymer.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.36.169
  DOI ID：10.14723/tmrsj.36.169, ISSN：1382-3469, CiNii Articles ID：130005004120
• Solid-state Structure and Formation of Organized Films for Three-arm Amphiphilic Polymer with Metal-Scavenging Property.　　　　　　　　　　　　　　　
  S. Hakozaki; K. Matsuda; B. Ochiai; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：36, Number：2, First page：153, Last page：156, 2011, [Reviewed]
  We investigated the molecular arrangement and surface morphology of organized molecular films of the 3-arm comb polymer containing metal ion us surface pressure-area (π-A) isotherm, inductively-coupled plasma mass spectrometry (ICP-MS), in-plane and out-of plane X-ray diffraction (XRD), and atomic force microscopy (AFM). From the result of WAXD measurement of the corresponding monomer in bulk, the long hydrocarbon chains are packed hexagonally in solid-state. Compared with their monolayer on the distilled water as subphase, that of this compound on buffer solution containing Cd²⁺ ion is remarkably expanded at 15°C. It is found that highly ordered layer structures and two-dimensional lattices are constructed in the organized molecular films of Cd-bridged comb polymer using in-plane and out-of plane XRD. Further, surface morphology of the LB films fabricated from the monolayers on buffer solution including Cd²⁺ formed flat and smooth domains by metal-scavenging.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.36.153
  DOI ID：10.14723/tmrsj.36.153, ISSN：1382-3469, CiNii Articles ID：130005004116
• Effect of Fixed Annealing and Free Shrinkage to the Crystalline Fluorinated Copolymer Film with High Transparency.　　　　　　　　　　　　　　　
  T. Nyuui; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：36, Number：2, First page：137, Last page：140, 2011, [Reviewed]
  A "crystalline" and flexible film with high transparency was developed by uniaxially drawing of fluorinated copolymer. For the practical use of "crystalline" film-type optical waveguide in the near future, an accurate control of the solid-state structure is indispensable because of the necessity of reducing light refraction at the crystalline/amorphous interface. In the present study, changes in the lamella arrangement and molecular mobility in the amorphous region upon fixed annealing and free shrinkage after drawing poly[tetrafluoroethylene-co-(perfluoroethylvinylether)] (abbrev. PFA) transparent crystalline films were investigated by using small-angle X-ray scattering (SAXS) method and dynamic viscoelastic measurement. The PFA was crystallized as a lamella crystal in the films and formed a thicker lamella. Upon the drawing of the PFA films, four-point SAXS diagrams developed in the photograph at through direction to the film, which implied that a particular type of layer structure, an alternately tilted lamella arrangement known as the herringbone, was formed. From the result of SAXS measurements, it is found that changes in lamella arrangement with shrinkage. From the result of dynamic viscoelastic measurement, it is found that fixed annealing film was formed rigid amorphous fraction. In contrast, free shrinkage film disorganized the rigid amorphous fraction.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.36.137
  DOI ID：10.14723/tmrsj.36.137, ISSN：1382-3469, CiNii Articles ID：130005004112
• Fabrication of Mixed Monolayer of Biodegradable Polymers and Organo-modified Montmorillonite.　　　　　　　　　　　　　　　
  J. Kusaka; M. Kubota; K. Kurosaka; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：36, Number：2, First page：157, Last page：160, 2011, [Reviewed]
  We investigated formation of ultrathin hybrid films composed of a biodegradable polymers (ex. poly(ethylene succinate), poly(L-lactide), and poly(ε-caprolactone)) and organo-modified montmorillonite nanosheet at an air/water interface. When a chloroform solution of the biodegradable polymer was spread onto a surface of an pure water in a Langmuir trough, a mixed monolayer of biodegradable polymer was formed by hybridization with the clay nanosheets at the air/water interface. These results indicated that some ammonium cations spread onto the clay suspension were dissolved into the aqueous subphase before the hybridization with the clay nanosheets. The hybrid monolayers were transferred onto a mica substrate by Langmuir-Blodgett method to form a mixed monolayer. Interestingly, the densities of dimethyl dioctadecyl (DMDO) ammonium determined by the thermogravimetric analysis were constant in the hybrid multilayers prepared from the clay suspensions at the same concentration, regardless of the concentrations of the amphiphilic ammonium salt solutions. Out-of plane and in-plane XRD profiles of the films showed that the cations of DMDO would lie down on the clay layer in the hybrid film.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.36.157
  DOI ID：10.14723/tmrsj.36.157, ISSN：1382-3469, CiNii Articles ID：130005004117
• Formation Mechanism and Functionality of Multi-particle layers of Aromatic Polyamides.　　　　　　　　　　　　　　　
  S. Chiba; Y. Abe; Y. Shibasaki; A. Fujimori
  Trans. Mat. Res. Soc. Jpn, Volume：36, Number：2, First page：145, Last page：148, 2011, [Reviewed]
  We constructed two-dimensional integrated single particle layer on the water surface of aromatic polyamides (poly-(N-alkylated benzamides) abbrev. PABA_n n: carbon number of side-chains) having both a rigid main-chain and a flexible side-chain with different lengths. Further, the build-up particle layers with highly regular arrangement along the c-axis are formed by Langmuir-Blodgett (LB) method. Molecular orientation and surface morphology of organized particle films of PABA_n were investigated by performing surface pressure-area (π-A) isotherm, in-plane and out-of plane X-ray diffraction (XRD), and atomic force microscopy (AFM) measurements. These single particle layers of several aromatic polyamides on the water surface were highly condensed at 15 ℃. Results of out-of plane XRD measurement of multi-particle layers showed that the PABA, particle layers showed large periodicities of 50-60 Å at 15 ℃. From these experimental findings, it was concluded that the polymer synthesis method employed in the present study can be directly used to control their surface morphologies, behavior of two-dimensional integration and multi-particle layer formation.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.36.145
  DOI ID：10.14723/tmrsj.36.145, ISSN：1382-3469, CiNii Articles ID：130005004114
• Nucleator Effect to the Crystallization Behavior of Perfluorinated Copolymers　　　　　　　　　　　　　　　
  Tatsuki Nyuui; Osamu Isawa; Atsuhiro Fujimori
  Netsu Sokutei, Volume：38, Number：3, First page：77, Last page：82, 2011, [Reviewed], [Last, Corresponding]
  Japanese, Scientific journal
• Structural Chemistry of Ultra-Thin Organized Molecular Films of Polymers -From Langmuir-Blodgett Film to Layered Organization of Polymer Nano-Sphere-　　　　　　　　　　　　　　　
  Atsuhiro Fujimori
  KOBUNSHI RONBUNSHU, Volume：68, Number：8, First page：579, Last page：593, 2011, [Reviewed]
  We developed a layered organization on the nanometer level in Langmuir-Blodgett (LB) films of several functional polymers and long-chain compounds. In the present study, the fine structures in the solid-state and molecular orientation in LB films of newly synthesized functional polymers and charge-transfer complexes were investigated by wide-angle X-ray diffraction (WAXD), small angle X-ray scattering (SAXS), surface pressure-area (pi-A) isotherm, in-plane and out-of plane X-ray diffraction (XRD), and atomic force microscopy (AFM). From the results of WAXD in bulk of these compounds, formation of the sub-cell for alkyl chains were confirmed in the ab-plane. Further, these compounds form a highly ordered layer structure along the c-axis. In addition, monolayers of these compounds on the water surface are extremely condensed. Structural changes in the two-dimensional films are caused by competition between the enhancement of pi-pi interaction of the arranged functional groups and van der Waals interaction of long hydrocarbone chains.
  SOC POLYMER SCIENCE JAPAN, Japanese, Scientific journal
  DOI：https://doi.org/10.1295/koron.68.579
  DOI ID：10.1295/koron.68.579, ISSN：0386-2186, Web of Science ID：WOS:000295949300007
• Mixed Monolayer of Biodegradable Polymers and Organo-modified Clay.　　　　　　　　　　　　　　　
  A. Fujimori
  SPE Plastics Res. Online, Number：7, First page：1, Last page：3, 2011, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1002/spepro.003663
  DOI ID：10.1002/spepro.003663
• Changes in Lamellar Arrangement of Crystalline and Flexible Fluorinated Transparent Films with Drawing　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Kazuya Numakura; Yuichiro Hayasaka
  POLYMER ENGINEERING AND SCIENCE, Volume：50, Number：7, First page：1295, Last page：1305, Jul. 2010, [Reviewed]
  In recent times, a "crystalline" and flexible optical waveguide candidate with excellent heat-resistance and dimensional stability are developed. For the practical use of this crystalline optical film in the near future, an accurate control of the solid-state structure is indispensable because of the necessity of reducing light refraction at the crystalline/amorphous interface. In this study, changes in the fine structure and lamella arrangement upon drawing poly[tetrafluoroethylene-co-(perfluoroethylvinylether)] (EFA) transparent crystalline films were investigated by using wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) methods. The EFA was crystallized as a lamella crystal in the films and formed a thicker lamella. Upon the drawing of the EFA films, four-point SAXS diagrams developed in the photograph at through direction to the film, which implied that a particular type of layer structure, an alternately tilted lamella arrangement known as the herringbone, was formed. From the result of WAXD and SAXS measurements at edge direction to the film, it is found that formation of isotropic disordered lamella arrangement. Therefore, it is indicated that three-dimensional lamella arrangement in this fluorinated transparent film forms uniaxially cylindrical symmetry. POLYM. ENG. SCI., 50:1295-1305, 2010. (C) 2010 Society of Plastics Engineers
  JOHN WILEY & SONS INC, English, Scientific journal
  DOI：https://doi.org/10.1002/pen.21657
  DOI ID：10.1002/pen.21657, ISSN：0032-3888, CiNii Articles ID：80021204940, Web of Science ID：WOS:000279309100003
• Study of molecular arrangement of organized molecular films of charge-transfer complexes containing 1,3-dithiole-2-thione-4,5-dithiolate by in-plane and out-of-plane X-ray diffractions　　　　　　　　　　　　　　　
  Yoko Tatewaki; Shuji Okada; Ryosuke Itagaki; Takayoshi Nakamura; Atsuhiro Fujimori
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：343, Number：1, First page：281, Last page：290, Mar. 2010, [Reviewed]
  We investigated the molecular arrangement and Surface morphology of organized molecular films Of alkylammonium-M bis(1,3-dithiole-2-thione-4,5-dithiolate) ((dmit)(2), M = Ni, Au, and Pd) charge-transfer complexes using the Surface pressure-area (pi-A) isotherm, polarized visible spectroscopy, in-plane and out-of-plane X-ray diffractions (XRD), and atomic force microscopy (AFM). Since Langmuir-Blodgett films of alkylammonium-M(dmit)(2) generally exhibit superconductivity, it may be possible to develop novel electronic molecular devices on the subnanometer scale. In the bulk state, several alkylammonium-M(dmit)(2) molecules Could not form a highly ordered layered Structure along the c-axis and a subcell structure of the alkyl chain in the ab-plane; however, almost all molecules formed a layered structure in the film multilayers. Monolayers of alkylammonium-M(dmit)(2) molecules on the water Surface were extremely condensed. Out-of-plane and in-plane XRD measurements revealed that over a long period, systematic changes occurred in the two-dimensional lattice structure of alkylammonium-M(dmit)(2) molecules and not in their bulk state. These structural changes appear to be Caused by enhancement of the van der Waals interaction among long hydrocarbons and the pi-pi interaction among (dmit)(2) units arranged two dimensionally. In addition, both the molecular arrangement and the Structural morphology of the films showed dependence on the hydrocarbon chain length, number of long alkyl chains, and kind of central metal. In particular, the molecular arrangement of materials having didecyl chains changed drastically and (dmit)(2) units were highly oriented in the ab-plane. Such Structural formations are suggested to significantly influence the stacking Of functional dmit units presiding over the conductive properties. (c) 2010 Published by Elsevier Inc.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2009.09.031
  DOI ID：10.1016/j.jcis.2009.09.031, ISSN：0021-9797, CiNii Articles ID：80020886358, PubMed ID：20045522, Web of Science ID：WOS:000274548900039
• Surface Morphological Changes in Monolayers of Aromatic Polyamides Containing Various N-Alkyl Side Chains　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Satoshi Chiba; Natsuki Sato; Yoko Abe; Yuji Shibasaki
  JOURNAL OF PHYSICAL CHEMISTRY B, Volume：114, Number：5, First page：1822, Last page：1835, Feb. 2010, [Reviewed]
  We synthesized new aromatic polyamides (poly-(N-alkylated benzamides), abbrev. PABA(n)) having both a rigid main chain and a flexible side chain with different lengths. We investigated the solid-state structures, that is, the molecular orientation and surface morphology, of organized molecular films of PABA, by performing surface pressure-area (pi-A) isotherm, in-plane and out-of plane X-ray diffraction (XRD), polarized infrared spectroscopy, and atomic force microscopy (AFM) measurements. The solid-state structure of poly-(N-methyl benzamide) (PABA(1)) belonged to the monoclinic system, whereas PABA(3), PABA(4), and PABA(5) showed an orthorhombic packing pattern. PABA(7) and PABA(8) formed amorphous polymers. In the case of PABA(17), a two-dimensional hexagonal lattice was formed as a subcell consisting of side chains. These polymer monolayers were highly condensed on a water surface at 15 degrees C. Out-of-plane XRD measurement results showed that the PABA(1), PABA(3), PABA(4), and PABA(5) multilayers showed large periodicities of 50-60 angstrom. From AFM observation results, it was found that these aromatic polyamides formed single particle layers of hydrophilic groups localized at the bottom of the particles. On the other hand, PABA7 and PABA8 monolayers showed irregularity and exhibited shapeless morphologies. In addition, an organized molecular film of PABA17 formed a highly ordered layer structure (periodicity of 30 angstrom) and a giant circular domain (diameter of 20 nm) made of a side chain crystal. The PABA17 monolayer showed a hexagonal packing pattern formed due to van der Waals interaction between the flexible side chains. From these experimental findings, it was concluded that the polymer synthesis method employed in the present study can be directly used to control the crystal structure (the third order structure of polymers), molecular arrangement, and surface morphologies of polymer monolayers.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/jp909379h
  DOI ID：10.1021/jp909379h, ISSN：1520-6106, CiNii Articles ID：80020933971, PubMed ID：20088530, Web of Science ID：WOS:000274270100012
• Highly Ordered and Stable Layered "Polymer Nanosheets" Constructed with Amorphous Side Chains and pi-pi Stacking of Functional Groups in Ternary Comb Copolymers　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Hiroko Hoshizawa; Satoshi Kobayashi; Natsuki Sato; Kaname Kanai; Yukio Ouchi
  JOURNAL OF PHYSICAL CHEMISTRY B, Volume：114, Number：6, First page：2100, Last page：2110, Feb. 2010, [Reviewed]
  We have developed a highly stable, layered structure for ternary copolymers in Langmuir-Blodgett (LB) films at a nanometer scale, with substantial durability over the long-term. In these ternary copolymer LB films, amorphous side chains support the layered structure, and the distance between the layers is controlled at the nanometer scale by the composition of hydrogenated and fluorinated side chains. In the present study, the fine structures of newly synthesized ternary comb copolymers with a carbazole ring in the solid state and molecular orientations in the LB films were investigated using wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), surface pressure-area (pi-A) isotherms, in-plane and out-of-plane X-ray diffraction (XRD), and atomic force microscopy (AFM). The WAXD results identified two short-spacing peaks related to the formation of the subcells for both the fluorinated and hydrogenated side chains. Further, SAXS measurements indicated that these ternary copolymers formed a highly ordered layer structure. In addition, monolayers on the water surface of these ternary copolymers were highly condensed. From the results of in-plane XRD and AFM, it was determined that the side chains and side-chain crystals could not form phase-separated structures in two-dimensional films. These structural features may result from enhancement of pi-pi interactions between the arranged carbazole rings. The side chains of the copolymers in the two-dimensional films are apparently in a miscible state, and monolayers form a homogeneous amorphous surface because of cancellation of differences in van der Waals forces between the two types of side chains. As a result, formation of a highly ordered layer structure in copolymer films having substantial durability over the long term is realized because amorphous side chains support the layer structure in the LB multilayers. Further, control of long spacing at a subnanometer level becomes possible due to changes in the tilt angle of the side chains, depending on their fluorocarbon content.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/jp9093782
  DOI ID：10.1021/jp9093782, ISSN：1520-6106, CiNii Articles ID：80020920359, PubMed ID：20104870, Web of Science ID：WOS:000274355400002
• Surface Morphology and Molecular Arrangement of Organized Films of Poly-(N-alkylated benzamides) Containing Various Chain Lengths　　　　　　　　　　　　　　　
  Sato Natski; Chiba Satoshi; Abe Yoko; Shibasaki Yuji; Fujimori Atsuhiro
  Trans. Mat. Res. Soc. Japan, Volume：35, Number：2, First page：315, Last page：318, 2010, [Reviewed], [Last, Corresponding]
  We investigated the molecular arrangement and surface morphology of organized molecular films with regard to solid-state structures for newly synthesized aromatic polyamides with various side chain length by surface pressure-area (π–A) isotherm, in-plane and out-of plane X-ray diffraction (XRD), and atomic force microscopy (AFM). Since the aromatic polyamides have rigid main chain and flexible side chain, it may be possible to form the phase separated structure at sub-nanometer scales. These polyamides form the extremely condensed monolayer on the water surface. Multilayers of these polyamides transferred by Langmuir-Blodgett (LB) method construct highly order layer structure. On the other hand, in the two-dimensional film plane of polyamides, amorphous structure of side chains is formed except for octadecyl derivatives. Changes in the surface morphology of monolayers for these polyamides definitely depend on the side chain length. Spherulitic, fibril like, and homogeneous flat morphologies of the film surface are systematically observed by AFM measurement.
  The Materials Research Society of Japan, English
  DOI：https://doi.org/10.14723/tmrsj.35.315
  DOI ID：10.14723/tmrsj.35.315, ISSN：1382-3469, CiNii Articles ID：130003398930
• Study of Molecular Arrangement and Surface Morphology of Organized Molecular Films of Charge-Transfer Complexes Containing Metal(dmit)₂ Unit　　　　　　　　　　　　　　　
  Itagaki Ryosuke; Tatewaki Yoko; Fujimori Atsuhiro
  Trans. Mat. Res. Soc. Japan, Volume：35, Number：2, First page：319, Last page：322, 2010, [Reviewed], [Last, Corresponding]
  The molecular arrangement and surface morphology of organized molecular films of alkylammonium-M bis(1, 3-dithiole-2-thione-4, 5-dithiolate) ((dmit)₂, M = Ni, Au, and Pd) charge-transfer complexes were investigated by using the surface pressure-area isotherm, in-plane and out-of plane X-ray diffractions (XRD), and atomic force microscopy. In the bulk state, several alkylammonium-M(dmit)₂ molecules could not form a highly ordered layer structure along the c-axis and a sub-cell structure of the alkyl chain in the ab-plane; however, almost all molecules formed a layer structure in the film multilayers. Monolayers of alkylammonium-M(dmit)₂ salts on the water surface were relatively condensed. Out-of plane and in-plane XRD measurements revealed that over a long period, systematic changes occurred in the two-dimensional lattice of alkylammonium-M(dmit)₂ salts and not in their bulk state. These structural changes appear to be caused by enhancement of the van der Waals interaction among long hydrocarbons and the π-π interaction among M(dmit)₂ units arranged two-dimensionally. In addition, both the molecular arrangement and the morphology of the films showed dependence on the hydrocarbon length, number of alkyl chains, and kind of central metal. In particular, the molecular arrangement of materials having didecyl chains changed drastically and M(dmit)₂ units were highly oriented in the ab-plane.
  The Materials Research Society of Japan, English
  DOI：https://doi.org/10.14723/tmrsj.35.319
  DOI ID：10.14723/tmrsj.35.319, ISSN：1382-3469, CiNii Articles ID：130003398931
• Formation and Structure of Organized Molecular Films of Organo-modified Montmorillonite.　　　　　　　　　　　　　　　
  Jun-ichi. Kusaka; Rintaro Nomura; Atsuhiro Fujimori
  Trans. Mat. Res. Soc. Japan, Volume：35, Number：2, First page：331, Last page：334, 2010, [Reviewed], [Last]
  Molecular arrangement and morphology of Langmuir-Blodgett (LB) films for the several organo-modified montmorillonites were investigated by out-of plane and in-plane X-ray diffraction (XRD), and atomic force microscopy (AFM). These organo-modified montmorillonites are formed by cation exchange reaction with quaternary ammonium regents containing octadecyl chain. The organo-modified montmorillonites formed extremely condensed monolayer on the water surface estimated by surface pressure-area (π-Α) isotherms. From the results of out-of plane XRD, formation of highly ordered layer structure was confirmed in these clay LB film. Further, two-dimensional lattice of long alkyl chain of organo-modified parts packed hexagonally or orthorhombically in the films. Surface morphology of Z-type monolayers on solid of organo-modified montmorillonites indicates heterogeneous modification ratio in montmorillonite surface by tapping mode AFM observation.
  The Materials Research Society of Japan, English
  DOI：https://doi.org/10.14723/tmrsj.35.331
  DOI ID：10.14723/tmrsj.35.331, ISSN：1382-3469, CiNii Articles ID：130003398934
• Control of Arrangement for Functionalized Group in Ternary Comb Copolymers by Langmuir-Blodgett Method　　　　　　　　　　　　　　　
  Sato Natsuki; Fujimori Atsuhiro
  Trans. Mat. Res. Soc. Japan, Volume：35, Number：2, First page：311, Last page：314, 2010, [Reviewed], [Last, Corresponding]
  We have developed a highly stable, layered structure for ternary copolymers in Langmuir-Blodgett (LB) films, with substantial durability over the long term. In these ternary copolymer LB films, amorphous side-chains support the layered structure, and the distance between the layers is controlled at the nanometer scale by the composition of hydrogenated and fluorinated side-chains. In the present study, we investigated the molecular orientation of organized molecular films with regard to solid-state structure of newly synthesized ternary comb copolymers with a carbazole ring by surface pressure-area isotherms, in-plane and out-of plane X-ray diffraction, and atomic force microscopy. Structural features of LB film of ternary copolymers may result from enhancement of π-π interactions between the arranged carbazole rings. The side-chains of the copolymers in the two-dimensional films are apparently in a miscible state, and monolayers form a homogeneous amorphous surface because of cancellation of differences in van der Waals forces between the two types of side-chains. As a result, new polymer nanomaterial expected to form a highly ordered layer structure having substantial durability over the long term is proposed because amorphous side-chains support the layer structure in the LB multilayers.
  The Materials Research Society of Japan, English
  DOI：https://doi.org/10.14723/tmrsj.35.311
  DOI ID：10.14723/tmrsj.35.311, ISSN：1382-3469, CiNii Articles ID：130003398929
• Lamella and Fine Crystallite Arrangement in "Crystalline", Flexible, Heat-Resistant, and Transparent Films of Fluorinated Copolymers　　　　　　　　　　　　　　　
  Numakura Kazuya; Fujimori Atsuhiro
  Trans. Mat. Res. Soc. Japan, Volume：35, Number：2, First page：303, Last page：306, 2010, [Reviewed], [Last, Corresponding]
  In recent times, a "crystalline" and flexible optical waveguide candidate with excellent heat-resistance and dimensional stability are developed. For the practical use of this crystalline optical film in the near future, an accurate control of the solid-state structure is indispensable because of the necessity of reducing light refraction at the crystalline/amorphous interface. In the present study, changes in the fine structure and lamella arrangement upon drawing poly[tetrafluoroethylene-co-(perfluoroethylvinylether)] (abbrev. EFA) transparent crystalline films are investigated by using wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) methods. The EFA is crystallized as a lamella crystal in the films and forms a thicker lamella. Upon the drawing of the EFA films, four-point SAXS diagrams develop in the photograph at through direction to the film, which implied that a particular type of layer structure, an alternately tilted lamella arrangement known as the herringbone, is formed. From the result of WAXD and SAXS measurements at edge direction to the film, it is found that formation of isotropic disordered lamella arrangement. Therefore, it is indicated that three dimensional lamella arrangement in this fluorinated transparent film forms uniaxially cylindrical symmetry.
  The Materials Research Society of Japan, English
  DOI：https://doi.org/10.14723/tmrsj.35.303
  DOI ID：10.14723/tmrsj.35.303, ISSN：1382-3469, CiNii Articles ID：130003398927
• Monolayer Behavior and Surface Morphology of Mixed Films for Organo-modified Montmorillonite and Poly(L-lactide)　　　　　　　　　　　　　　　
  Jun-ichi Kusaka; Rintaro Numura; Atsuhiro Fujimori
  Trans. Mat. Res. Soc. Japan, Volume：35, Number：2, First page：335, Last page：338, 2010, [Reviewed], [Last, Corresponding]
  Monolayer behavior on the water surface and mesoscopic morphological formation on solid of mixed organized moelcuar films of organo-modified montmorillonite and poly-(L-lactide) (abbrev. PLLA) were investigated by surface pressure-area (π-A) isotherm and atomic force microscopy (AFM). From the results of π-A isotherm of neat PLLA monolayer, clearly phase transition behavior from monolayer to crystal was confirmed with plateau at low surface pressure region. Straight chain-type polymer may form the lamellae like three-dimensional structure at transition point although this type transition behavior generally corresponds to a collapse of monolayer and formation of piled up film. In the case of mixed monolayer with organo-modified montmorillonite, this transition point is independent on the mixed ratio, and indicates almost constant value in their isotherms. That is to say, this is immiscible system. From the result of AFM observation, phase separated structure was confirmed in mesoscopic scales. This phase separated morphology remarkably varied with mixed ratio.
  The Materials Research Society of Japan, English
  DOI：https://doi.org/10.14723/tmrsj.35.335
  DOI ID：10.14723/tmrsj.35.335, ISSN：1382-3469, CiNii Articles ID：130003398935
• Solid-state Structure and Formation of Organized Molecular Films for Poly-(N-alkylated benzamides) Containing Various Chain Lengths　　　　　　　　　　　　　　　
  S. Chiba; N. Sato; Y. Abe; Y. Shibasaki; A. Fujimori
  Trans. Mater. Res. Soc. Jpn, Volume：35, Number：2, First page：307, Last page：310, 2010, [Reviewed]
  We investigated the solid-state structure and formation of organized molecular films for newly synthesized aromatic polyamides having both a rigid main-chain and a flexible side-chain with different lengths by wide angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), and surface pressure-area (π–A) isotherm measurements. The solid-state structure of poly-(N-methylbenzamide) (PABA₁) belonged to the monoclinic system, whereas PABA₃, PABA₄, and PABA₅ showed an orthorhombic packing system. PABA₇ and PABA₈ formed amorphous polymers. In the case of PABA₁₇, a two-dimensional hexagonal lattice was formed as a sub-cell consisting of side chains. These polymer monolayers were highly condensed on a water surface at 15 °C. From these experimental findings, it is concluded that the polymer synthesis method employed in this study can be directly used to control the crystalline morphology (the third order structure of polymers) of polymer monolayers.
  The Materials Research Society of Japan, English, Scientific journal
  DOI：https://doi.org/10.14723/tmrsj.35.315
  DOI ID：10.14723/tmrsj.35.315, ISSN：1382-3469, CiNii Articles ID：130003398928
• Direct condensation polymerization of N-alkylated p-aminobenzoic acid and packing of rigid-rod main chains with flexible side chains　　　　　　　　　　　　　　　
  Yuji Shibasaki; Yoko Abe; Natsuki Sato; Atsuhiro Fujimori; Yoshiyuki Oishi
  POLYMER JOURNAL, Volume：42, Number：1, First page：72, Last page：80, Jan. 2010, [Reviewed]
  Direct condensation polymerization of N-alkylated p-aminobenzoic acid, in which methyl, propyl, butyl, pentyl, heptyl, octyl and heptadecyl substituents were used as the alkyl group, was performed using hexachloroethane, triphenylphosphine and pyridine as condensation reagents. Pale-yellow N-alkylated poly(p-benzamide) (PABA,) polymers, where n is the number of carbon atoms of the alkyl side chain, were obtained in 46-87% yields with an inherent viscosity of 0.06-0.65 per 100 ml g(-1) (conc. H2SO4, 30 degrees C). The structures of PABA(n) were identified using infrared, nuclear magnetic resonance and elemental analysis. PABA(n) with long alkyl side chains (n>3) showed good solubility in chloroform, as well as conc. H2SO4 and m-cresol. The glass transition temperature (T-g) of PABA(n) measured by differential scanning calorimetry gradually decreased with an increase in the length of the alkyl group. The endothermic peak corresponding to melting was observed for PABA(n) with n=3, 4, 5 and 17 on DSC profiles. The wide-angle powder X-ray scattering of the polymer samples indicated that PABA(n) polymers with n=0, 1, 3, 4, 5 and 17 were crystalline polymers. X-ray scattering profiles showed PABAn with n=3, 4 and 5 crystallized in an orthorhombic lattice, whereas PABA, crystallized in a monoclinic lattice. PABA(17) crystallized in hexagonal packing at the long side chain with an interplanar spacing of 4.2 angstrom. Polymer Journal (2010) 42, 72-80; doi:10.1038/pj.2009.306
  NATURE PUBLISHING GROUP, English, Scientific journal
  DOI：https://doi.org/10.1038/pj.2009.306
  DOI ID：10.1038/pj.2009.306, ISSN：0032-3896, eISSN：1349-0540, CiNii Articles ID：10026363705, Web of Science ID：WOS:000273472000012
• Phase behavior of bile acid/lipid/water systems containing model dietary lipids　　　　　　　　　　　　　　　
  Yoshimune Nonomura; Keisuke Nakayama; Yuki Aoki; Atsuhiro Fujimori
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：339, Number：1, First page：222, Last page：229, Nov. 2009, [Reviewed], [Last]
  Dietary lipids are solubilized in bile acid micelles in the small intestine. In the present study, we investigate the phase behavior of bile acid/model rapeseed oil (or model beef tallow)/water systems to predict interfacial phenomena during consumption of a variety of foods. The structures of molecular assemblies are identified based on polarizing microscope images, wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS). The results of in vitro tests suggest that an increase in the intake of model rapeseed oil causes the formation of multi-lamellar vesicles and lamellar liquid crystals. The molecules in the lamellar liquid crystal are formed highly ordered layer structure with the spacing of 8.8 nm along the c-axis, while monoclinic packed structure is constructed as two-dimensional structure in ab-plane due to bulky molecular structures of bile acid and unsaturated fatty acid. When the model beef tallow composition in the model system is more than several wt.%, stearic acid crystals are extracted. Moreover, bicarbonate ions are important ingredients to solubilize > 10 wt.% of the model lipids. These phase transitions might be induced by the addition of dietary lipids in vivo during the consumption of oil or meat. Our findings are significant for understanding the lipid absorption process in the small intestine, and for developing medical and healthcare products. (C) 2009 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2009.07.030
  DOI ID：10.1016/j.jcis.2009.07.030, ISSN：0021-9797, eISSN：1095-7103, CiNii Articles ID：80020522491, PubMed ID：19682701, Web of Science ID：WOS:000272262900028
• Control of Arrangement for s-Triazine Group in Comb Copolymers by the Langmuir-Blodgett Method and Its Structural Estimation by NEXAFS Spectroscopy　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Natsuki Sato; Kaname Kanai; Yukio Ouchi; Kazuhiko Seki
  LANGMUIR, Volume：25, Number：2, First page：1112, Last page：1121, Jan. 2009, [Reviewed], [Lead, Corresponding]
  We investigated the molecular orientation of organized molecular films with regard to solid-state structures for newly synthesized comb copolymers with 2-vinyl-4,6-diamino- 1,3,5-triazine (VDAT) by surface pressure-area (pi-A) isotherms, in-plane and out-of-plane X-ray diffraction (XRD), atomic force microscopy (AFM), and polarized near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Since VDAT has adsorption ability to an adenine-thymine base pair of a DNA molecule, control of orientation for VDAT units in monolayers is possible to form surface patterning of biomolecules and construct candidates of new biochip materials. In the bulk state, hydrogenated and fluorinated comb copolymers containing VDAT form side-chain crystals for a two-dimensional lattice spacing of 4.2 and 5.0 angstrom, respectively. From the results of the differential scanning calorimetric (DSC) measurements, sharp-shaped melting peaks appear on the relatively lower temperature side of the thermograms. This result supports the formation of side-chain crystals in the synthesized comb copolymers. These monolayers of copolymers on the water surface were extremely condensed, except for the VDAT:OA = 5:1 copolymer. From the in-plane XRD measurement of multilayers on solids, changes in the two-dimensional lattice structure of fluorinated comb copolymer films containing VDAT units, as opposed to their bulk state, were confirmed. It seems that these structural changes are caused by the stronger pi-pi interaction between the s-triazine rings rather than the van der Waals interaction between fluorocarbons. Polarized NEXAFS spectroscopy showed highly ordered orientation of s-triazine groups in the films based on the incident angle dependency of C and Nls-pi*(C=N) transitions with synchrotron radiation. These experimental findings relate to well-ordered arrangement of functional groups supporting the side-chain rearrangement caused by the pi-pi interaction between the s-triazine rings.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/la802729e
  DOI ID：10.1021/la802729e, ISSN：0743-7463, CiNii Articles ID：80020075209, PubMed ID：19113812, Web of Science ID：WOS:000262431100066
• Structure and mechanical properties in drawn poly(L-lactide)/clay hybrid films　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Naoya Ninomiya; Toru Masuko
  POLYMERS FOR ADVANCED TECHNOLOGIES, Volume：19, Number：12, First page：1735, Last page：1744, Dec. 2008, [Reviewed], [Lead, Corresponding]
  Films composed of poly(L-lactide) (PLLA)/organophilic montmorillonite hybrids (PLACHs) have been prepared via a melt-compounding process, which is followed by uniaxial drawing at 90 degrees C in air. In addition, an enhancement of the mechanical properties of these drawn PLACH films, which is expected to differ depending on the drawn ratios, is also estimated by dynamic viscoelastic measurements. Three different organoclay concentrations in the hybrid of 3, 5, and 9 wt% were investigated. The structural parameters for the PLLA crystallites in the drawn films, such as the c-axis orientation function (f(PLLA)) and crystallite size, were measured by X-ray diffraction, and their drawn ratio (lambda) and clay concentration dependence were examined from a textural viewpoint. Another orientation function (f(clay)) of the organoclay particles was obtained by transmission electron microscopy (TEM). The values of f(PLLA) and crystallinity for PLLA sharply increased with lambda for lambda < 3, although f(clay) was unchanged during the initial stage of elongation. In the high-lambda region (>5), the organoclay particles in the PLACHs started orienting themselves parallel to the draw direction. Copyright (C) 2008 John Wiley & Sons, Ltd.
  JOHN WILEY & SONS LTD, English, Scientific journal
  DOI：https://doi.org/10.1002/pat.1189
  DOI ID：10.1002/pat.1189, ISSN：1042-7147, CiNii Articles ID：80019982072, Web of Science ID：WOS:000262034100007
• Changes in Arrangement of Lamella and Fine Crystallite in Fluorinated "Crystalline" Transparent Fibers with Drawing　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Yuichiro Hayasaka
  MACROMOLECULES, Volume：41, Number：20, First page：7606, Last page：7615, Oct. 2008, [Reviewed], [Lead, Corresponding]
  Recently, we developed a "crystalline" plastic optical fiber with excellent heat resistance and dimensional stability. For the practical use of this crystalline optical fiber in the near future, all accurate control of the solid-state structure is indispensable because of the necessity of reducing light refraction at the crystalline/amorphous interface. In the present study, changes in the fine structure and lamella arrangement upon drawing poly[tetrafluoroethylene-co-(perfluoroethylvinylether)] (abbrev. EFA) transparent crystalline fibers were investigated by using wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) methods. The EFA was crystallized as a lamella crystal in the fibers and formed a thicker lamella (thickness: at least 27 rim). This polymer might from a "switchboard-type" lamella. Upon the drawing of the EFA fibers, four-point SAXS diagrams developed in the photograph, which implied that a particular type 4 layer structure. all alternate]), tilted lamella arrangement known as the herringbone, was formed. Moreover, the previously proposed packing mode of general fluorinated polymers was required to be modified from quasi-hexagonal to orthorhombic in a reciprocal lattice in order to assign all reflective indexes.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/ma800801d
  DOI ID：10.1021/ma800801d, ISSN：0024-9297, CiNii Articles ID：80019963527, Web of Science ID：WOS:000260255800051
• Control of arrangement for carbazole group in fluorinated comb copolymers by method of organized films　　　　　　　　　　　　　　　
  Hiroko Hoshizaiwa; Atsuhiro Fujimori
  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, Volume：322, Number：1-3, First page：239, Last page：242, Jun. 2008, [Reviewed], [Last, Corresponding]
  Control of orientation for functional carbazole groups in comb copolymer was carried out by co-polymerization with long-chain vinyl compound and method of organized molecular films. Further, their structural estimation was performed by in-plane X-ray diffraction (XRD) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. In the bulk state, fluorinated comb copolymers form side-chain crystal for a two-dimensional lattice spacing of 5.0 angstrom. From the in-plane XRD measurement of multilayers on solids, changes in the two-dimensional lattice structure of fluorinated comb copolymer films containing NVCz units, as opposed to their bulk state, were confirmed. In this case, polarized NEXAFS measurement showed that highly ordered orientation of carbazole groups was attained in the films. It is considered that this well-ordered arrangement of functional groups is caused by enhancement of pi-pi interaction between the carbazole rings. (C) 2008 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2008.03.016
  DOI ID：10.1016/j.colsurfa.2008.03.016, ISSN：0927-7757, eISSN：1873-4359, CiNii Articles ID：80019631343, Web of Science ID：WOS:000257129300035
• Influence of dispersed organophilic montmorillonite at nanorneter-scale on crystallization of poly(L-lactide)　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Naoya Ninomiya; Toru Masuko
  POLYMER ENGINEERING AND SCIENCE, Volume：48, Number：6, First page：1103, Last page：1111, Jun. 2008, [Reviewed], [Lead, Corresponding]
  We investigated the effects of surface-treated organophilic clay on the crystallization of poly(L-lactide) (PLLA) in their hybrids. The natural nano-clay in PLLA/clay hybrids acts as a heterogeneous nucleating agent to facilitate crystallization. On the contrary, extensive distributions of induction periods for nucleation are observed in the individual spherulites of neat PLLA and PLLA/organophilic clay hybrids. Therefore, it is suggested that nucleation type of neat PLLA and PLLA/organophilic clay hybrids implies nearly growth geometry as a homogeneous one. Further, under the presence of nano-clay in their composites, PLLA matrix form the orthorhombic lattice structure corresponded to the a-form crystal. Since this experimental fact implies little effect of the clay particles on polymorphism of PLLA crystal, the nucleating effect of the organophilic clay seems weaker than the natural clay itself. However, an increase in clay content enhances the growth rates of spherulite for hybrids. Consequently, most of hybrids exhibit an increase in overall crystallization rates at any crystallization temperature in spite of relatively lower nucleation rate of PLLA crystallites itself. In addition, the Avrami exponents (n) obtained by relatively low crystallization temperature ranged from 4 to 6, implying that the growth geometry was dominated sheaf-like structure in early stage of isothermal crystallization.
  JOHN WILEY & SONS INC, English, Scientific journal
  DOI：https://doi.org/10.1002/pen.21057
  DOI ID：10.1002/pen.21057, ISSN：0032-3888, CiNii Articles ID：80019639733, Web of Science ID：WOS:000256316900008
• Layer structure estimation of three-dimensional crystal and two-dimensional molecular film for fluorinated comb copolymers　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Hiroko Hoshizawa; Satoshi Kobayashi; Kaname Kanai; Yukio Ouchi; Kazuhiko Seki
  JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Volume：46, Number：5, First page：534, Last page：546, Mar. 2008, [Reviewed], [Lead, Corresponding]
  Comb copolymers containing both hydrogenated and fluorinated side-chains were prepared by copolymerization using acrylic or methacrylic monomers in several ratios. The crystal structures of these copolymers and layer structures of their organized molecular films were investigated by wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), and out-of plane X-ray diffraction. Further, to selectively estimate the regularity of shorter fluorocarbon side-chains, organized molecular films of copolymers were investigated by polarized near-edge X-ray adsorption fine structure (NEXAFS) spectroscopy. From the results of these measurements, it was inferred that these copolymers formed highly ordered layer structures, and a long spacing was predominantly determined by the arrangement of hydrogenated side-chains, except in copolymers having extremely high fluorocarbon contents. In the case of the organized molecular films, the fluorinated side-chains of methacrylate copolymers cannot form a highly ordered arrangement, whereas those of acrylate copolymers were oriented on monolayers. However, in both cases, the hydrogenated side-chains predominantly formed layer structures in the organized films, and the fluorinated side-chains did not contribute to the formation of the layer structures. (C) 2008 Wiley Periodicals, Inc.
  WILEY-BLACKWELL, English, Scientific journal
  DOI：https://doi.org/10.1002/polb.21387
  DOI ID：10.1002/polb.21387, ISSN：0887-6266, eISSN：1099-0488, CiNii Articles ID：80019444396, Web of Science ID：WOS:000253737500011
• Structural Control of Functionalized Groups in Organized Molecular Films of Comb Copolymers　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Hiroko Hoshizawa; Ryoko Kobayashi; Natsuki Sato
  TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 33, NO 1, Volume：33, Number：1, First page：75, Last page：78, 2008, [Reviewed], [Lead, Corresponding]
  Orientation for functional carbazole groups in comb copolymers were controlled using co-polymerization with long-chain vinyl compounds and the method of organized molecular films. Their structures were estimated using in-plane X-ray diffraction (XRD) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. In the bulk state, fluorinated comb copolymers form side-chain crystal at a two-dimensional lattice spacing of 5.0 angstrom. From the in-plane XRD measurements of multilayers on solids, the two-dimensional lattice structures of fluorinated comb copolymer films containing NVCz units were different from those in their bulk states. Polarized NEXAFS measurements showed highly ordered orientation of carbazole groups in the films. This well-ordered arrangement of functional groups should be caused by the pi-pi interaction between the carbazole rings.
  MATERIALS RESEARCH SOCIETY JAPAN-MRS-J, English, International conference proceedings
  Web of Science ID：WOS:000263875700019
• Solid-state Structure and Molecular Orientation in Organized Films of Ternary Comb Copolymers Containing N-vinylcarbazole　　　　　　　　　　　　　　　
  Satoshi Kobayashi; Syohei Jindo; Hiroko Hoshizawa; Atsuhiro Fujimori
  TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 33, NO 1, Volume：33, Number：1, First page：79, Last page：82, 2008, [Reviewed], [Last, Corresponding]
  The fine structures in the solid state and molecular orientation in Langmuir-Blodgett films of newly synthesized ternary comb copolymers with N-vinylcarbazole were investigated by wide-angle X-ray diffraction (XRD), small angle X-ray scattering, in-plane XRD, out-of plane XRD and atomic force microscopy. From the results of XRD in bulk, two kinds of short spacing peaks based on the formation of the sub-cell for fluorinated and hydrogenated side-chains were confirmed. Further, these ternary copolymers formed highly ordered layer structure. In addition, these ternary copolymers formed extremely condensed monolayers on the water surface. From the out-of plane XRD measurements of multilayers, formation of highly ordered layer structure was conformed. From the results of in-plane XRD and AFM, it was found that phase-separated structures between fluorinated and hydrogenated side-chains could not form in two-dimensional films. These structural changes may be cause by the pi-pi interaction between the carbazole rings.
  MATERIALS RESEARCH SOCIETY JAPAN-MRS-J, English, International conference proceedings
  Web of Science ID：WOS:000263875700020
• Fine Structure of 'Crystalline' Fluorinated Transparent Films and Fibers　　　　　　　　　　　　　　　
  Yuichiro Hayasaka; Atsuhiro Fujimori
  TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 33, NO 1, Volume：33, Number：1, First page：83, Last page：86, 2008, [Reviewed], [Last, Corresponding]
  Changes in fine structure with drawing of poly[tetrafluoroethylene-co-(perfluoroethylvinylether)] (abbrev. PFA) transparent thin films and fibers were investigated by wide angle X-ray diffraction (WAXD) and small angle X-ray scattering (SAXS) methods. The PFA is random copolymer containing comonomer units of fluorinated ether derivatives as the side-chain in the repeating tetrafluoroethylene backbone. This polymer is crystallized as lamella crystal in their thin films and fibers although polytetrafluoroethylene itself usually forms extended-chain crystals because of their inflexible and rigid nature of 13/6 helices. PFA are exhibited thicker lamella thickness at least 30 nm by the SAXS measurement than general hydrogenated crystalline polymer. In these copolymers, we consider the formation of "switchboard-type" lamellae model according to P. J. Flory's Suggestion. With increase in elongation to their thin film, the four points SAXS diagrams has developed in the photograph of PEA transparent films, which means that a particular kind of layer structure is formed, alternately tilted lamella arrangements as a "Herring-bone".
  MATERIALS RESEARCH SOCIETY JAPAN-MRS-J, English, International conference proceedings
  Web of Science ID：WOS:000263875700021
• Structures in the Solid-state and in the Organized Molecular Films of Comb Copolymers Containing s-Triazine Ring　　　　　　　　　　　　　　　
  Natsuki Sato; Ryoko Kobayashi; Atsuhiro Fujimori
  TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 33, NO 1, Volume：33, Number：1, First page：87, Last page：90, 2008, [Reviewed], [Last, Corresponding]
  Structures in the solid state and in the organized molecular films of comb copolymers containing 2-vinyl-4, 6-diamino-s-triazine (VDAT) were investigated using X-ray diffraction (XRD), differential scanning calorimetry (DSC) and surface pressurc-area (pi-A) isotherm measurements. The comb copolymers used in this study were synthesized by co-polyrnerization of fluorinated or hydrogenated long-chain vinyl compounds and VDAT with AIBN initiator in acetone solution. From the results of XRD and DSC, these copolymers formed side-chain crystals in the bulk states. Fluorinated comb copolymers had a short spacing of 5.0 angstrom for the two-dimensional side-chain lattice whereas hydrogenated polymers formed sub-cell structure at a lattice spacing of 4.2 angstrom
  These comb copolymers formed stable condensed monolayers on the water surface estimated by pi-A isotherms. The molecular arrangement of Langmuir-Blodgett film of comb copolymers corresponded well to that of bulk state from the results of in-plane XRD measurements.
  MATERIALS RESEARCH SOCIETY JAPAN-MRS-J, English, International conference proceedings
  Web of Science ID：WOS:000263875700022
• Fabrication and Structural Control of PLLA/clay Two-dimensional Nanocomposite in Organized Molecular Films　　　　　　　　　　　　　　　
  Yoshitaka Takahara; Naoya Ninomiya; Atsuhiro Fujimori
  TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 33, NO 1, Volume：33, Number：1, First page：91, Last page：94, 2008, [Reviewed], [Last, Corresponding]
  Langmuir-Blodgett (LB) films of organo-modified montmorillonite (abbreviated as C(18)-clay) and poly(L-lactic acid) (PLLA)/C(18)-clay intercalated multilayer films formed and the structures were investigated by out-of plane X-ray diffraction (XRD), in-plane XRD, and atomic force microscopy (AFM). Intercalated multilayers were constructed by the application of the LB method to C(18)-Clay monolayers and the horizontal lifting method to PLLA monolayers. Further, surface morphology of PLLA : C(18)-clay mixed Z-type monolayers on solid were also estimated by AFM.
  Because these systems are two-dimensional ultrathin layer models related to polymer/clay nanocomposite as hybrid material in bulk, experimental results in this study are discussed in the view of formation mechanism and origin of functionality of three-dimensional polymer/clay nanocomposite meterials, referring to the structural information of these organized molecular films.
  MATERIALS RESEARCH SOCIETY JAPAN-MRS-J, English, International conference proceedings
  Web of Science ID：WOS:000263875700023
• Fine Structure of Fluorinated Copolymer Nono-filler Composites　　　　　　　　　　　　　　　
  Yuichiro Hayasaka; Tadashi Tamura; Atsuhiro Fujimori
  TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 33, NO 1, Volume：33, Number：1, First page：137, Last page：140, 2008, [Reviewed], [Last, Corresponding]
  Fine structure in the matrix polymer and dispersion state of fillers for poly [tetrafluoroethyl ethylene-co-(perfluoroalkylvinylether)] (abbrev. PFA) / nano-fillers (such as organo-modified smectite, organo-modified mica, and porous silica particles) composites were investigated by wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), and differential scanning calorimetry (DSC).
  From the results of TEM observation, it was found that nano-fillers were almost uniformly dispersed in PFA matrix. Further, PFA / nano-filler composites are exhibited relatively larger distance between lamellar gravity at least 30 nm estimated by SAXS than general hydrogenated crystalline polymer. This result means that fluorinated copolymer formed the thicker lamella crystal. In addition, a melting peak these nanocomposites showed in DSC thermograms was shifted to higher temperature side than that of neat PFA. It is suggested that the origin of this thermal behavior corresponds to occurrence the nucleator effect of nano-fillers to the matrix PFA.
  MATERIALS RESEARCH SOCIETY JAPAN-MRS-J, English, International conference proceedings
  Web of Science ID：WOS:000263875700035
• Spherulitic structures of poly [tetrafluoroethylene-co-(perfluoroalkyl vinyl ether)]　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Masahiro Hasegawa; Toru Masuko
  POLYMER INTERNATIONAL, Volume：56, Number：10, First page：1281, Last page：1287, Oct. 2007, [Reviewed], [Lead, Corresponding]
  Spherulitic textures of poly[tetrafluoroethylene-co-(perfluoropropyI vinyl ether)] (PFA) were examined in detail using polarized optical microscopy. The PFA consisting of random comonomer units among the tetrafluoroethylene units crystallizes as spherulites composed of lamellae, although polytetrafluoroethylene usually forms extended-chain crystals because of the rigid nature of 13/6 helices. The spherulites obtained exhibit positive birefringence since the polymer crystal has a larger refractive index in the direction normal to the chain than that along it. These fluorocopolymers exhibit a thicker long period of at least 30 nm in small-angle X-ray scattering profiles than is generally the case for hydrogenated crystalline polymers. In these copolymers, we consider the formation of a switchboard-type lamellae model according to P. J. Flory's suggestion. In addition, we find the overlooked reflections near 2 theta = 8.5 degrees based on the superlattice in wide-angle X-ray diffraction profiles of fluorocopolymers with high reproducibility. From this result, it was found that the lattice constant that was previously proposed is required to be refined to twice the value on the a- and b-axes of the reciprocal lattice to assign all the reflection indices. (c) 2007 Society of Chemical Industry.
  JOHN WILEY & SONS LTD, English, Scientific journal
  DOI：https://doi.org/10.1002/pi.2274
  DOI ID：10.1002/pi.2274, ISSN：0959-8103, CiNii Articles ID：80018221087, Web of Science ID：WOS:000249602000015
• Transcrystalline structures of Poly(L-lactide)　　　　　　　　　　　　　　　
  Naoya Ninomiya; Kensuke Kato; Atsuhiro Fujimori; Toru Masuko
  POLYMER, Volume：48, Number：16, First page：4874, Last page：4882, Jul. 2007, [Reviewed]
  Poly(L-lactide) (PLLA) film containing transcrystalline (TC) structures can easily be obtained by placing PLLA films melted between two poly(tetrafluoroethylene) (PTFE) sheets, followed by isothermal crystallization at 122 degrees C. The fine structures of the PLLA-TC film were studied by various structural techniques such as X-ray diffractometry, optical microscopy and transmission electron microscopy. We also examined the purification effect upon the morphology of PLLA-TC film. The formation of the TC structures revealed that one-dimensional spherulitic growth occurred from the assembling impurities as nucleation agent near the PTFE substrate in the heterogeneous nucleation system. We found that the h-axis of PLLA crystal was parallel to the lamellae growth direction confirined using X-ray diffraction. The precipitated PLLA film crystallized in a similar process exhibited scanty TC textures, suggesting that the existence of impurity in the PLLA sample was an important factor for the formation of those structures. (c) 2007 Elsevier Ltd. All rights reserved.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.polymer.2007.06.012
  DOI ID：10.1016/j.polymer.2007.06.012, ISSN：0032-3861, CiNii Articles ID：80018411551, Web of Science ID：WOS:000248860400028
• Control of orientation for carbazole group in comb copolymers arranged by method of organized molecular films　　　　　　　　　　　　　　　
  Hiroko Hoshizawa; Ryosuke Masuya; Toru Masuko; Atsuhiro Fujimori
  POLYMERS FOR ADVANCED TECHNOLOGIES, Volume：18, Number：5, First page：353, Last page：363, May 2007, [Reviewed], [Last, Corresponding]
  We investigated the molecular orientation of organized molecular films with regard to solid-state structures for newly synthesized comb copolymers with N-vinylcarbazole (NVCz) by in-plane and out-of plane X-ray diffraction (XRD), differential scanning calorimetry (DSC), and atomic force microscopy (AFM). In the bulk state, hydrogenated and fluorinated comb copolymers form side-chain crystals for a two-dimensional lattice spacing of 4.2 and 5.0 angstrom respectively. The findings suggest that the carbazole rings in the main-chain are arranged in opposition to each other. From the results of the DSC measurement, sharp-shaped melting peaks appear on the relatively lower temperature side of the thermograms. This result supports the formation of side-chain crystals in the synthesized comb copolymers. These monolayers of the copolymers on the water surface were extremely condensed, except for the fluorocarbon:NVCz = 1:1 copolymer. From the in-plane XRD measurement of multilayers on solids, the changes in the two-dimensional lattice structure of fluorinated comb copolymer films containing NVCz units, as opposed to their bulk state, were confirmed. It seems that these structural changes are caused by the stronger pi-pi interaction between the carbazole rings rather than the van der Waals interaction between fluorocarbons. Copyright (c) 2007 John Wiley & Sons, Ltd.
  WILEY-BLACKWELL, English, Scientific journal
  DOI：https://doi.org/10.1002/pat.895
  DOI ID：10.1002/pat.895, ISSN：1042-7147, eISSN：1099-1581, CiNii Articles ID：80018497363, Web of Science ID：WOS:000246166300003
• Solid-state structure and formation of organized molecular films of methacrylate copolymers containing fluorinated and hydrogenated side-chains　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Satoshi Kobayashi; Hiroko Hoshizawa; Ryosuke Masuya; Tbru Masuko
  POLYMER ENGINEERING AND SCIENCE, Volume：47, Number：4, First page：354, Last page：364, Apr. 2007, [Reviewed], [Lead, Corresponding]
  Surface morphology of monolayers related to solid-state structure for methacrylate comb copolymers having fluorocarbon and hydrocarbon side-chains was investigated by X-ray diffraction (XRD), differential scanning calorimetry, and atomic force microscopy (AFM). From the XRD profiles, two kinds of short spacing peaks were confirmed at 5.0 and 4.2 angstrom, which assigned the sub-cells for both side-chains. Furthermore, two kinds of endothermic peaks, which corresponded to melting peaks of the both side-chain crystals, appeared in the thermograms. From the AFM observation, it was found that there were hydrogenated domains at a few hundred nanometer diameter in their monolayers, whereas corresponding acrylate copolymer monolayers form the phase-separated structure at 10-30 nm order scales.
  WILEY-BLACKWELL, English, Scientific journal
  DOI：https://doi.org/10.1002/pen.20713
  DOI ID：10.1002/pen.20713, ISSN：0032-3888, eISSN：1548-2634, CiNii Articles ID：80018574368, Web of Science ID：WOS:000245164100003
• Structural estimation of organized molecular films for comb copolymer containing N-vinylcarbazole　　　　　　　　　　　　　　　
  A. Fujimori; H. Hoshizawa; R. Masuya; T. Masuko
  Volume：32, Number：2, First page：357, Last page：360, 2007, [Reviewed], [Lead, Corresponding]
• Solid-state structure of fluorinated comb copolymer and molecular orientation of its organized molecular film　　　　　　　　　　　　　　　
  S. Kobayashi; R. Masuya; T. Masuko; A. Fujimori
  Volume：32, Number：2, First page：353, Last page：356, 2007, [Reviewed], [Last, Corresponding]
• Solid-state structure and formation of organized molecular films for comb copolymer containing N-vinylcarbazole.　　　　　　　　　　　　　　　
  H. Hoshizawa; R. Masuya; T. Masuko; A. Fujimori
  Volume：32, Number：2, First page：349, Last page：352, 2007, [Reviewed], [Last, Corresponding]
• Solid-state linear viscoelastic properties of intercalated poly(L-lactide)/organomodified montmorillonite hybrids　　　　　　　　　　　　　　　
  Pham Hoai Nam; Masahiro Kaneko; Naoya Ninomiya; Atsuhiro Fujimori; Toru Masuko
  POLYMER INTERNATIONAL, Volume：55, Number：8, First page：916, Last page：922, Aug. 2006, [Reviewed]
  Hybrids of poly(L-lactide)/organophilic clay (PLACHs) have been prepared by a melt-compounding process using poly(L-lactide) (PLLA) and different contents of surface-treated montmorillonite modified with a dimethyl dioctadecyl ammonium salt. The dispersion structures of clay particles in PLACHs were investigated using wide-angle X-ray diffraction and transmission electron microscopy. The solid-state linear viscoelastic properties for these PLACHs were examined as functions of temperature and frequency. The incorporation of organo-modified silicate into PLLA matrix enhanced significantly both storage moduli (F) and loss moduli (E ''). The strong enhancement observed in dynamic moduli of PLACHs could be attributed to uniformly dispersed state of the clay particles with high aspect ratio (= length/thickness of clay) and the intercalation of the PLLA chains between silicate layers. (C) 2006 Society of Chemical Industry.
  JOHN WILEY & SONS LTD, English, Scientific journal
  DOI：https://doi.org/10.1002/pi.2035
  DOI ID：10.1002/pi.2035, ISSN：0959-8103, CiNii Articles ID：80018991152, Web of Science ID：WOS:000239224100013
• Less-ordered lamellar structure of intercalated poly(L-lactide)/organo-modified montmorillonite hybrids　　　　　　　　　　　　　　　
  PH Nam; N Ninomiya; A Fujimori; T Masuko
  POLYMER ENGINEERING AND SCIENCE, Volume：46, Number：6, First page：703, Last page：711, Jun. 2006, [Reviewed]
  Hybrids of poly(L-lactide)/organophilic clay (PLACHs) have been prepared via a melt-compounding process using poly(L-lactide) (PLLA) and different contents of surface-treated montmorillonite modified with dimethyl dioctadecyl ammonium-salt. The crystalline structures of PLLA and dispersion states of clay particles in those PLACHs were investigated by use of wide-angle X-ray diffraction, small-angle X-ray scattering, transmission electron microscopy (both cross section and replication modes), and polarized optical microscopy. Those structures are viewed from the conformational changes of PLLA chains in the space of a few nanometer widths between silicate galleries to crystalline lamellae of several nanometer thicknesses, and spherulitic textures more than micrometer sizes. After annealing treatments at 115 degrees C for 1 hr, the PLACHs formed coarse-grained spherulitic textures with 40 mu m diameter composed of less-ordered and fragmented lamellae, caused by the reduced mobility of the PLLA chain due to the dispersed clay particles in the PLLA matrix and the intercalation of the PLLA chains in the silicate galleries. The formation of the interfibril structure accompanied by the fragmented lamellae among the dispersed clay particles was examined.
  JOHN WILEY & SONS INC, English, Scientific journal
  DOI：https://doi.org/10.1002/pen.20556
  DOI ID：10.1002/pen.20556, ISSN：0032-3888, Web of Science ID：WOS:000237841600001
• Fine structure at sub-nanometer scale and morphology of organized molecular films of fluorinated comb copolymers　　　　　　　　　　　　　　　
  R. Masuya; S. Kobayashi; A. Fujimori; T. Masuko; K. Kanai; Y. Ouchi; K. Seki
  Polymer Preprints, Japan, Volume：55, Number：2, First page：3471, 2006
  The molecular orientation and morphology in monolayers on solid of newly synthesized comb copolymers having fluorinated and hydrogenated side-chains has been investigated by near-edge X-ray absorption fine structures (NEXAFS) spectroscopy, and atomic force microscopy (AFM). From the results of these measurements, it was found that two kinds of side-chain of these copolymers form highly ordered molecular orientation. Furthermore, the molecular orientation varied depending on the ratios of both side-chains in copolymers. From AFM observation, microscopic phase separated by structure of fluorinated and hydrogenated side-chains were confirmed. The size of hydrogenated domain varied with changes in the chemical structure of main-chains and the ratio of both side-chains.
  Japanese, International conference proceedings
  SCOPUS ID：33846140446
• Structural control of organized molecular films for comb polymers and its structural estimation　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Satoshi Kobayashi; Ryosuke Masuya; Toru Masuko; Eisuke Ito; Masahiko Hara; Kaname Kanai; Yukio Ouchi; Kazuhiko Seki; Hiroo Nakahara
  TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 31, NO 3, Volume：31, Number：3, First page：559, Last page：564, 2006, [Reviewed], [Lead, Corresponding]
  The molecular orientation in mono- and multilayers of fluorinated comb copolymers with various monomer ratios were characterized by in-plane and out-of plane X-ray diffraction (XRD), near-edge X-ray absorption fine structures (NEXAFS) spectroscopy at the C K-edges, and atomic force microscopic (AFM) observation. Furthermore, the fine structure in the solid state and phase transition behavior of these newly synthesized comb copolymers having fluorocarbon and hydrocarbon side-chains were investigated by temperature controlled wide angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC). From the WAXD profiles, two kinds of short spacing peaks which were assigned to the sub-cells for fluorinated and hydrogenated side-chains were confirmed at 5.0 and 4.1 angstrom, respectively. Furthermore, two kinds of endothermic peaks, which corresponded to melting peaks of the both side-chain crystals, appeared in the heating process of the DSC thermograms. From these experimental findings, the phase-separated structure having the independently packed immiscible side-chain crystals formed in the whole polymer crystal. In addition, it was found that these comb polymers formed highly ordered (double) layer structure on the basis of WAXD and small angle X-ray scatting (SAXS). These fluorinated comb copolymers form the monolayer on the water surface and their transferred films adopt phase-separated structures at the nanometer length scale on solids. Hydrogenated domains of about 30 nm in diameter form in these phase-separated surface structures of monolayers. From these experimental results, these copolymer monolayers are expected to be used as new molecular devices such as nano-lithography using surface patterning of polymer nano-materials.
  ELSEVIER SCIENCE BV, English, International conference proceedings
  Web of Science ID：WOS:000242517100001
• Crystallization characteristics of intercalated poly(L-lactide)/organo-modified montmorillonite hybrids　　　　　　　　　　　　　　　
  PH Nam; N Ninomiya; A Fujimori; T Masuko
  POLYMER ENGINEERING AND SCIENCE, Volume：46, Number：1, First page：39, Last page：46, Jan. 2006, [Reviewed]
  The crystallization behavior of intercalated Poly(L-lactide) (PLLA)/organo-modified montmorillonite hybrids has been investigated in term of growth of spherulites and bulk crystallization. The PLLA hybrids were prepared via melt-compounding between PLLA and montmorillonite organo-modified (organoclay) with two different types of ammonium salts: trimethyl octadecyl- or bis(4-hydroxy butyl) methyl octadecyl ammonium salts. The nucleation rate of PLLA crystallites is slightly enhanced by natural clay, while reduced by organoclay due to the shielding effect and/or miscibility between surfactants of clays and PLLA chains. The incorporation of small amount of organoclay in PLLA matrix shows a tendency to reduce slightly the growth rate and the overall crystallization rate of PLLA crystallites. The secondary nucleation theory was utilized to discuss the crystallization behavior of these hybrids.
  JOHN WILEY & SONS INC, English, Scientific journal
  DOI：https://doi.org/10.1002/pen.20436
  DOI ID：10.1002/pen.20436, ISSN：0032-3888, CiNii Articles ID：80017654975, Web of Science ID：WOS:000234393300005
• Fine structure and phase transition behavior of fluorinated comb copolymers　　　　　　　　　　　　　　　
  R Masuya; N Ninomiya; A Fujimori; H Nakahara; T Masuko
  JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Volume：44, Number：2, First page：416, Last page：425, Jan. 2006, [Reviewed], [Corresponding]
  The fine structure in the solid state and phase transition behavior of newly synthesized comb copolymers having fluorocarbon and hydrocarbon side-chains were investigated by temperature controlled wide angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC). From the WAXD profiles, two kinds of short spacing peaks based on the formation of the subcell for fluorinated and hydrogenated side-chains were confirmed at 5.0 and 4.1 angstrom, respectively. Furthermore, two kinds of endothermic peaks, which corresponded to melting peaks of both side-chain crystals, appeared in heating process of the DSC thermograms. From these experimental findings, the phase separation structure having the independently packed immiscible side-chain crystalline was formed in the whole polymer crystal. In addition, it was found that these comb polymers formed highly ordered (double) layer structure estimated using WAXD and small angle X-ray scattering (SAXS). These fluorinated comb copolymers form a monolayer on the water surface and their transferred film with phase-separated structure at nanometer size on solid. There were hydrogenated domains at 10-20 nm diameter scales in these phase separated surface structure of monolayers. From these experimental results, these copolymer monolayers are expected to be used as a new molecular device such as nanolithography based on the surface patterning of polymer nanomaterials. (c) 2005 Wiley Periodicals, Inc.
  WILEY-BLACKWELL, English, Scientific journal
  DOI：https://doi.org/10.1002/polb.20711
  DOI ID：10.1002/polb.20711, ISSN：0887-6266, eISSN：1099-0488, CiNii Articles ID：80017670937, Web of Science ID：WOS:000234353600016
• Structural changes in drawn poly(L-lactide)/clay hybrid films　　　　　　　　　　　　　　　
  Naoya Ninomiya; Atsuhiro Fujimori; Toru Masuko
  MACROMOLECULAR SYMPOSIA, Volume：239, First page：97, Last page：100, 2006, [Reviewed]
  The films composed of poly(L-lactide)(PLLA)/organoclay hybrids (PLACHs) have been prepared via a melt-compounding process, in which the organoclay paticles are uniformly dispersed in the PLLA matrix. The changes in PLLA crystal orientation for the uniaxially drawn films were studied by differential scanning calorimetry, X-ray diffractometry and transmission electron microscopy. Additionally, temperature dependence of the mechanical properties for these drawn films were examined by a dynamic viscoelastometer. After drawing the quenched PLACHs film at 90 degrees C, the orientation and crystallinity of PLLA crystal increased rapidly with increasing drawing ratio (lambda) in the range more than 3 times. At the higher lambda, the organoclay platelet particles in the PLACHs became parallel to the draw direction. The mechanical properties of drawn PLACHs were strongly dependent on both clay concentration and lambda.
  WILEY-V C H VERLAG GMBH, English, Scientific journal
  DOI：https://doi.org/10.1002/masy.200650714
  DOI ID：10.1002/masy.200650714, ISSN：1022-1360, CiNii Articles ID：80019034649, Web of Science ID：WOS:000239050400015
• Molecular orientation and morphology of organized molecular films for fluorinated comb copolymers　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Satoshi Kobayashi; Ryosuke Masuya; Toru Masuko; Eisuke Ito; Masahiko Hara; Kaname Kanai; Yukio Ouchi; Kazuhiko Seki; Hiroo Nakahara
  MACROMOLECULAR SYMPOSIA, Volume：245, First page：215, Last page：227, 2006, [Reviewed], [Lead, Corresponding]
  Surface morphology of monolayers related to solid-state structure for methacrylate comb copolymers having fluorocarbon and hydrocarbon side-chains was investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and atomic force microscopy (AFM). From the XRD profiles, two kinds of short spacing peaks were confirmed at 5.0 and 4.2 A, which assigned the sub-cells for both side-chains. Furthermore, two kinds of endothermic peaks, which corresponded to melting peaks of the both side-chain crystals, appeared in the thermograms. From the AFM observation, it was found that there were hydrogenated domains at a few hundred nm diameter in their monolayers, whereas corresponding acrylate copolymer monolayers form the phase-separated structure at 10-30 nm order scales.
  WILEY-V C H VERLAG GMBH, English, International conference proceedings
  DOI：https://doi.org/10.1002/masy.200651330
  DOI ID：10.1002/masy.200651330, ISSN：1022-1360, eISSN：1521-3900, CiNii Articles ID：80018643279, Web of Science ID：WOS:000244852000031
• Neat Alq(3) thin film and metal/Alq(3) interfaces studied by NEXAFS spectroscopy　　　　　　　　　　　　　　　
  T Yokoyama; H Ishii; N Matsuie; K Kanai; E Ito; A Fujimori; T Araki; Y Ouchi; K Seki
  SYNTHETIC METALS, Volume：152, Number：1-3, First page：277, Last page：280, Sep. 2005, [Reviewed]
  Thin film of Alq(3) and its interfaces with various metals (K, Li, Ca, Al)/Alq(3) and the Al/LiF/Alq(3) interface were investigated using NEXAFS spectroscopy. The assignments of structures in NEXAFS spectra at the C, N and O K-edges were performed using theoretical calculations taking account of the core-excitonic effect. The NEXAFS spectra at the three edges are well reproduced by the simulated results. The spectra at the N and O K-edges of Alq(3) are similar to the partial density of unoccupied states (PDOUS) of the ground state, but the spectrum at the C K-edge is different from the PDOUS of ground state due to the core-excitonic effect. ne present study is the first trial of the detailed analysis of the C K-edge spectrum of Alq(3).
  The spectral changes at the metal/Alq(3) and Al/LiF/Alq(3) interface were found to depend on the metal. By the comparison with the theoretical simulations based on the 1:1 metal-Alq(3) complex, we found that the electron transfer and orbital overlap occur at the interfaces of K/Alq(3) and Li/Alq(3), while the observed changes at the Ca/Alq(3) and Al/Alq(3) interfaces could not be understood by the simulated results. At the LiF/Alq(3) interface, we observed the spectral changes which may result from some chemical interaction. Some of the spectral changes at Al/LiF/Alq(3) interface differ from those of Al/Alq(3) interface, indicating chemical interaction specific for the co-existence of Al, LiF, and Alq(3).
  ELSEVIER SCIENCE SA, English, Scientific journal
  DOI：https://doi.org/10.1016/j.synthmet.2005.07.108
  DOI ID：10.1016/j.synthmet.2005.07.108, ISSN：0379-6779, Web of Science ID：WOS:000232394100071
• Molecular orientation of F16ZnPc deposited on Au and Mg substrates studied by NEXAFS and IRRAS　　　　　　　　　　　　　　　
  T Ikame; K Kanai; Y Ouchi; E Ito; A Fujimori; K Seki
  CHEMICAL PHYSICS LETTERS, Volume：413, Number：4-6, First page：373, Last page：378, Sep. 2005, [Reviewed]
  The molecular orientations of hexadecafluorophthalocyanatozinc (F16ZnPc) vacuum-deposited on An and Mg substrates were studied by near edge X-ray absorption fine structure (NEXAFS) spectroscopy and infrared reflection-absorption spectroscopy. The molecular planes of F16ZnPc deposited on An and Mg substrates were found to be nearly parallel and vertical to the substrate surface, respectively, from the polarization dependence of NEXAFS spectral intensity. The air-exposure of the metal substrate before F16ZnPc deposition affected the molecular orientation on Au, while little effect was found for the Mg substrate. These results are discussed in terms of the molecule molecule and molecule-substrate interactions. (c) 2005 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.cplett.2005.07.083
  DOI ID：10.1016/j.cplett.2005.07.083, ISSN：0009-2614, CiNii Articles ID：80017545817, Web of Science ID：WOS:000232094200024
• Melt intercalation of poly(L-lacticle) chains into clay galleries　　　　　　　　　　　　　　　
  PH Nam; M Kaneko; N Ninomiya; A Fujimori; T Masuko
  POLYMER, Volume：46, Number：18, First page：7403, Last page：7409, Aug. 2005, [Reviewed]
  The melt intercalation of poly(L-lactide) (PLLA) chains into silicate galleries has been investigated via a melting process without any shearing force at elevated temperature. Under the melting process, the incorporation of various types of organo-modified montmorillonites into PLLA matrix lead to the increase in the basal spacing of clay particles in different manner without delamination into individual layers. The changes in layer-stacked structures of the clay particles in the PLLA matrix were examined by use of wide-angle X-ray diffraction and transmission electron microscopy. The effects of clay content in PLLA matrix and clay surfactants on the melt intercalation of PLLA were discussed in terms of chain mobility. (c) 2005 Published by Elsevier Ltd.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.polymer.2005.06.023
  DOI ID：10.1016/j.polymer.2005.06.023, ISSN：0032-3861, CiNii Articles ID：80017799624, Web of Science ID：WOS:000231397200066
• Crystallisation of polypropylene containing nucleators　　　　　　　　　　　　　　　
  S Nagasawa; A Fujimori; T Masuko; M Iguchi
  POLYMER, Volume：46, Number：14, First page：5241, Last page：5250, Jun. 2005, [Reviewed]
  The crystallisation of polypropylene in the presence of sodium benzoate, graphite powders, Millad 3988 (1,3:2,4-bis(3,4-dimethyl-benzylidene sorbitol)) and NA-11 (sodium 2,2'-methylene bis-(4,6-di-tert-butylphenyl)phosphate) was studied. As a parameter for the effectiveness of nucleators, a free-energy parameter for the nucleation was estimated, on the basis of a theory, from the nucleation temperature during cooling at various rates. The density of actual nuclei was estimated from the radial growth rate of spherulites and the bulk growth rate, the latter obtained by the analysis of crystallisation isotherms. The dispersibility of nucleator particles calculated with reference to the mean volume of particles was various, the cluster size being ranged between unity to several hundred. The Young's modulus of films prepared from the polymer-nucleator mixtures has been found to correlate with the nucleus density without respect to the kind of nucleator. (c) 2005 Elsevier Ltd. All rights reserved.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.polymer.2005.03.099
  DOI ID：10.1016/j.polymer.2005.03.099, ISSN：0032-3861, CiNii Articles ID：80017332663, Web of Science ID：WOS:000229945500030
• Changes in mechanical properties for drawn poly(L-lactide)/clay hybrid films　　　　　　　　　　　　　　　
  Naoya Ninomiya; Atsuhiro Fujimori; Toru Masuko
  Polymer Preprints, Japan, Volume：54, Number：2, First page：3500, Last page：3501, 2005
  The films composed of poly(L-lactide)(PLLA)/clay hybrids have been prepared via a melt-compounding process using PLLA and surface treated montmorillonite modified with ammonium salt. The drawing ratio and clay concentration dependence of mechanical properties for uniaxially drawn hybrid films have been investigated by using wide-angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM) and a dynamic viscoelastometer. The strong enhancement of mechanical properties with the uniaxially drawing was induced by both the orientation of PLLA crystal and the organoclay platelet particles in the hybrid films became parallel to the draw direction.
  Japanese, International conference proceedings
  SCOPUS ID：33645555120
• Crystal Structure and Formation of Organized Molecular Films of Fluorinated Comb Copolymers　　　　　　　　　　　　　　　
  A. Fujimori; R. Masuya; K. Kumagai; T. Masuko; E. Ito; M. Hara; K. Kanai; Y. Ouchi; K. Seki
  Volume：30, Number：1, First page：143, Last page：146, 2005, [Reviewed], [Lead, Corresponding]
• Study on morphology and crystal growth of syndiotactic polystyrene solution-grown crystals by transmission electron and atomic force microscopy　　　　　　　　　　　　　　　
  N Suto; A Fujimori; T Masuko
  POLYMER, Volume：46, Number：1, First page：167, Last page：172, Jan. 2005, [Reviewed], [Corresponding]
  The morphology of solution-grown crystals (SGCs) of syndiotactic polysthyrene (s-PS) has been investigated using transmission electron and atomic force microscopy (TEM and AFM). Well-defined s-PS SGCs were prepared from 0.005% (w/w) n-tetradecane/decahydronaphthalene solution 2:1 (v/v) by an isothermal crystallization method at 200degreesC. Lattice constants for this crystal estimated by TEM with the diffraction mode are a = 0.90 nm, b = 2.88 nm. AFM images of the folded chains on the surface of s-PS SGC suggested their alignment parallel to the direction of the growth face of the truncated-lozenge shaped crystal. The angle between the growth faces obtained from s-PS SGCs was 130degrees. Since, the value of 130degrees correspond to the {230} angle, the primary growth face of s-PS SGC was assigned to the (230) plane. (C) 2004 Elsevier Ltd. All rights reserved.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.polymer.2004.10.083
  DOI ID：10.1016/j.polymer.2004.10.083, ISSN：0032-3861, CiNii Articles ID：80017069447, Web of Science ID：WOS:000226316700018
• Characteristics of monolayer behavior and multilayer film structures of comb polymers having different kinds of fluorocarbon side-chains　　　　　　　　　　　　　　　
  A Fujimori; H Nakahara; E Ito; M Hara; K Kanai; Y Ouchi; K Seki
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：278, Number：1, First page：184, Last page：191, Oct. 2004, [Reviewed]
  With comb polymers with different kinds of fluorocarbon side-chains, significant effects of spreading solvents on the monolayers at the air/water interface and the molecular arrangement in the deposited films could be found by the use of trifluoroacetic acid and its mixed solvents with n-hexane, depending on the atoms, fluorine or hydrogen, substituted at the end of the fluorocarbon side-chains. These facts are probably due to intralayer hydrogen bonding cooperating with the carbonyl groups of the long-chain esters. The deposited films of solid substrates were characterized by polarized near-edge X-ray absorption fine structure (NEXAFS) spectroscopy as well as in-plane X-ray diffraction and scanning electron and atomic force microscopy. (C) 2004 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2004.05.034
  DOI ID：10.1016/j.jcis.2004.05.034, ISSN：0021-9797, CiNii Articles ID：80016893327, PubMed ID：15313653, Web of Science ID：WOS:000223630800023
• The dispersion behavior of clay particles in poly(L-lactide)/organo-modified montmorillonite hybrid systems　　　　　　　　　　　　　　　
  PH Nam; A Fujimori; T Masuko
  JOURNAL OF APPLIED POLYMER SCIENCE, Volume：93, Number：6, First page：2711, Last page：2720, Sep. 2004, [Reviewed]
  Hybrids of poly(L-lactide)/organoclay (PLACHs) have been prepared via a melt-compounding process using poly(L-lactide) (PLLA) and three types of surface-treated montmorillonite modified with ammonium salts (M1, trimethyl octadecyl-; M2, dimethyl dioctadecyl-, and M3, bis(4-hydroxy butyl) methyl octadecyl-ammonium). The dispersed state of the clay particles in the PLLA matrix was examined by use of wide-angle X-ray diffraction, transmission electron microscopy, and polarizing optical microscopy. On melt-compounding PLLA and two organoclays (M1, M2) modified with the surfactants both carrying homogenous alkyl chains, we obtained intercalated hybrids with relatively uniform dispersion of nanometer-sized clay particles. On the other hand, the organoclay (M3) modified with a surfactant carrying alkyl chains end-capped with hydroxyl groups yielded the composite with flocculated particles. The flocculation of the particles originates from the hydrogen bonding among the hydroxyl groups of the component surfactant, those of the clay edge and those of both ends of PLLA chains. (C) 2004 Wiley Periodicals, Inc.
  JOHN WILEY & SONS INC, English, Scientific journal
  DOI：https://doi.org/10.1002/app.20899
  DOI ID：10.1002/app.20899, ISSN：0021-8995, CiNii Articles ID：80016830209, Web of Science ID：WOS:000223068300025
• Formation of the newly greenish organized molecular film of long-chain diynoic acid derivatives by photopolymerization and its structural study using near-edge X-ray absorption fine structure (NEXAFS) spectroscopy　　　　　　　　　　　　　　　
  A Fujimori; M Ishitsuka; H Nakahara; E Ito; M Hara; K Kanai; Y Ouchi; K Seki
  JOURNAL OF PHYSICAL CHEMISTRY B, Volume：108, Number：35, First page：13153, Last page：13162, Sep. 2004, [Reviewed]
  The effect of molecular arrangements with annealing on photopolymerization in the Langmuir-Blodgett films of 10,12-pentacosadiynoic acid cadmium salt was investigated using UV-vis spectroscopy, out-of plane and in-plane X-ray diffraction (XRD), and polarized near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. The formation of a greenish polymer film with an extended conjugate system was determined to be related to the film structures. Furthermore, the incident-angle dependence of C1s-pi* transition peaks on the annealed transferred film with an extended conjugate system was confirmed by C K-edge polarized NEXAFS spectroscopy, whereas this dependency was not observed on nonannealed multilayer films. In addition, multilayers of metal-free 10,12-pentacosadiynic acid were examined by photopolymerization, and their film structures were elucidated. Contrary to expectations, a red-colored polymer film was observed to form highly ordered side-chain orientations with the shift of the C1s-pi* transition peaks in the NEXAFS spectra, although the regularity of molecular and side-chain arrangement for monomer and blue polymer films could not be confirmed. These findings indicate the color phase transition of diacetylene derivatives with photopolymerization induced the rearrangement of the conjugated backbone, supported by a shift of the C1s-pi* band in the NEXAFS spectra.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/jp049576r
  DOI ID：10.1021/jp049576r, ISSN：1520-6106, CiNii Articles ID：80016859550, Web of Science ID：WOS:000223600800016
• Distribution of clay particles in the spherulitic texture of poly(L-lactide)/organo-modified montmorillonite hybrids　　　　　　　　　　　　　　　
  Naoya Ninomiya; Pham Hoai Nam; Atsuhiro Fujimori; Toru Masuko
  E-POLYMERS, Volume：41, First page：1, Last page：10, Jun. 2004, [Reviewed]
  The distribution of clay particles in the spherulitic texture of poly(L-lactide)/clay hybrids crystallized isothermally at 140degreesC has been investigated by use of energy-dispersive X-ray microanalysis. After crystallization of the hybrids, the clay particles were found to distribute with almost constant concentration along the radial direction of the spherulites, i.e., they are still kept in stacked state inside the spherulites without any segregation during crystallization. The concentration distribution of the clay particles showed that these particles were incorporated into the spherulitic texture of the crystallized hybrids.
  EUROPEAN POLYMER FEDERATION, English, Scientific journal
  DOI：https://doi.org/10.1515/epoly.2004.4.1.431
  DOI ID：10.1515/epoly.2004.4.1.431, ISSN：1618-7229, Web of Science ID：WOS:000222252000001
• Changes in the near-edge X-ray absorption fine structure spectra of long-chain diacetylene derivatives through photopolymerization in Langmuir-Blodgett films　　　　　　　　　　　　　　　
  A Fujimori; M Ishitsuka; H Nakahara; E Ito; M Hara; K Kanai; H Ishii; Y Ouchi; K Seki
  JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, Volume：42, Number：12, First page：2329, Last page：2336, Jun. 2004, [Reviewed]
  Photopolymerization of cadmium 10,12-pentacosadiynoate (CdDA) in Langmuir-Blodgett (LB) films, with the molecular packing well arranged by moderate preannealing, was investigated with near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Greenish films of polydiacetylene with an absorption wavelength of 705 nm were obtained through the photopolymerization of preannealed monomer LB films, and this resulted in an extended pi-conjugate system based on the well-ordered monomer in a two-dimensional arrangement. The electronic structures of the polydiacetylenes were found to be correlated to the variation of the molecular arrangements in the films from the changes in the NEXAFS spectra through photopolymerization in the LB films. (C) 2004 Wiley Periodicals, Inc.
  JOHN WILEY & SONS INC, English, Scientific journal
  DOI：https://doi.org/10.1002/polb.20107
  DOI ID：10.1002/polb.20107, ISSN：0887-6266, CiNii Articles ID：80016705758, Web of Science ID：WOS:000221769800014
• Monolayer assemblies of comb polymers containing different kinds of fluorocarbon side-chains　　　　　　　　　　　　　　　
  A Fujimori; Y Shibasaki; T Araki; H Nakahara
  MACROMOLECULAR CHEMISTRY AND PHYSICS, Volume：205, Number：6, First page：843, Last page：854, Apr. 2004, [Reviewed]
  Langmuir monolayers and organized molecular films of comb polymers containing different kinds of fluorocarbon side-chains with various chain lengths and substituted atoms at the omega-position were characterized by surface pressure-area isotherms as well as Brewster angle microscopy on a water surface and by scanning probe microscopies (AFM and FFM) and the out-of and in-plane X-ray diffractions on the solid substrates, respectively. When compared with monolayers of fluorinated amphiphilic vinyl monomers, those of the corresponding comb polymers were significantly stabilized. The nanostructures of these organized molecular films changed considerably with the film fabrication method used (such as mixed monolayers with hydrogenated amphiphiles) and the deposition conditions as well as with minor chemical modification of the fluorinated comb polymers with different hydrophilic esters and fluorocarbon side-chains. The characteristic friction behavior for films built up of the fluorinated amphiphiles and comb polymers was found to depend strongly on the chemical constituents of the outermost layer of the film surface.
  WILEY-V C H VERLAG GMBH, English, Scientific journal
  DOI：https://doi.org/10.1002/macp.200300107
  DOI ID：10.1002/macp.200300107, ISSN：1022-1352, CiNii Articles ID：80016649896, Web of Science ID：WOS:000221315100017
• Flocculation characteristics of organo-modified clay particles in poly(L-lactide)/montmorillonite hybrid systems　　　　　　　　　　　　　　　
  PH Nam; A Fujimori; T Masuko
  E-POLYMERS, Volume：5, First page：1, Last page：7, Jan. 2004, [Reviewed]
  The stacking characteristics of organo-modified montmorillonite particles in poly(L-lactide)/clay hybrids have been investigated through FT-IR measurements and transmission electron microscopy. The clay particles tend to flocculate with hydrogen bonding among the hydroxyl groups of the surfactant, those located at the edge of clay particles, and/or those existing at the ends of polylactide chains.
  EUROPEAN POLYMER FEDERATION, English, Scientific journal
  DOI：https://doi.org/10.1515/epoly.2004.4.1.40
  DOI ID：10.1515/epoly.2004.4.1.40, ISSN：1618-7229, Web of Science ID：WOS:000188374300001
• Approach to observe folded chains of syndiotactic polystyrene on solution-grown crystals by atomic force microscopy　　　　　　　　　　　　　　　
  N Suto; A Fujimori; T Masuko
  E-POLYMERS, Volume：57, First page：1, Last page：5, Oct. 2003, [Reviewed]
  Folded chains of syndiotactic polystyrene located on the surface of its solution-grown crystals (SGCs) have been observed on nano scale by use of atomic force microscopy (AFM). Transmission electron micrographs of the SGCs on the mesoscopic scale exhibited truncated-lozenge platelets accompanied by a sharp electron diffraction pattern of the beta"-form. AFM images of selected areas on the SGC surface indicated folded chains existing periodically on the surface with c. 1.3 to 1.4 nm spacing, suggesting that the polymer chains are aligned in parallel with the {230} growth faces of SGC.
  EUROPEAN POLYMER FEDERATION, English, Scientific journal
  DOI：https://doi.org/10.1515/epoly.2003.3.1.747
  DOI ID：10.1515/epoly.2003.3.1.747, ISSN：1618-7229, Web of Science ID：WOS:000186341200001
• Retardation of water evaporation by less-defective mixed monolayers spread from bulk solids onto water surface　　　　　　　　　　　　　　　
  S Machida; S Mineta; A Fujimori; H Nakahara
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：260, Number：1, First page：135, Last page：141, Apr. 2003, [Reviewed]
  From AFM observation of transferred films on mica, it has been found that mixed monolayers of hexadecanol with poly(vinyl stearate) give a film with a less-defective and flat surface by spreading from bulk solids of those mixtures onto a water surface without using any organic solvent. As a result, those mixed monolayers have a considerably larger effect on retardation of water evaporation in comparison with those spread from the solution of the mixtures. After the saturated surface pressure of the mixed monolayer spread from the bulk solids, an enhanced effect on retardation of water evaporation was found, accompanied by the preferential spreading of hexadecanol and the gradual reduction of defects in the mixed monolayer. (C) 2003 Elsevier Science (USA). All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/S0021-9797(02)00222-9
  DOI ID：10.1016/S0021-9797(02)00222-9, ISSN：0021-9797, CiNii Articles ID：80015930294, PubMed ID：12742043, Web of Science ID：WOS:000182258100016
• Molecular orientation in the organized molecular films of fluorinated comb polymers with various chain lengths studied by soft X-ray absorption spectroscopy　　　　　　　　　　　　　　　
  A Fujimori; T Araki; H Nakahara; E Ito; M Hara; N Matsuie; H Ishii; Y Ouchi; K Seki
  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, Volume：76, Number：3, First page：663, Last page：672, Mar. 2003, [Reviewed]
  The molecular orientation in multilayer films of fluorinated comb polymers with various side-chain lengths can be characterized by near-edge X-ray absorption fine structures (NEXAFS) spectroscopy at the C K- and F K-edges. The spectra are found to change significantly with respect to the incidence angles of the soft X-rays and the number of layers in organized molecular films as well as chemical modifications such as fluorocarbon side-chain lengths, the atoms at the omega-position of the fluorocarbon side-chains, and a-methyl substituents. Analysis of these changes of the NEXAFS spectra provides useful information about the average molecular orientation in the X- and Z-types of mono- and multilayer films of the fluorinated comb polymers on solids.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/bcsj.76.663
  DOI ID：10.1246/bcsj.76.663, ISSN：0009-2673, eISSN：1348-0634, CiNii Articles ID：10012811575, Web of Science ID：WOS:000181715800030
• Morphology related to phase separation for the mixed monolayer of fluorinated comb polymer and hydrogenated long-chain compound　　　　　　　　　　　　　　　
  A Fujimori; H Nakahara
  CHEMISTRY LETTERS, Volume：32, Number：1, First page：2, Last page：3, Jan. 2003, [Reviewed]
  From observations of the atomic and friction force microscopies, it has been found that the mixed monolayers of the comb polymer having the fluorocarbon side-chains and the hydrogenated amphiphile, exhibit a characteristic phase separation behavior at the micro- and mesoscopic resolutions. The regularity for molecular orientation in the mixed film was compared with that in the pure monolayer of the fluorinated comb polymer by using polarized NEXAFS spectroscopy.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2003.2
  DOI ID：10.1246/cl.2003.2, ISSN：0366-7022, eISSN：1348-0715, CiNii Articles ID：10012812684, Web of Science ID：WOS:000180673400001
• Formation and Structure of Organized Molecular Films for Fluorinated Comb Polymers with Various Chain Lengths　　　　　　　　　　　　　　　
  A. Fujimori; H. Nakahara; E. Ito; M. Hara; K. Kanai; Y. Ouchi; K. Seki
  Trans. Mater. Res. Soc. Jpn., Volume：28, Number：1, First page：11, Last page：14, 2003, [Reviewed]
  English, Scientific journal
• Photopolymerization and Structural Characterization of Organized Molecular Films of Long-Chain Diynoic Acid Derivative by Using NEXAFS Spectroscopy.　　　　　　　　　　　　　　　
  M. Ishitsuka; A. Fujimori; H. Nakahara; E. Ito; M. Hara; K. Kanai; Y. Ouchi; K. Seki
  Trans. Mater. Res. Soc. Jpn., Volume：28, Number：1, First page：15, Last page：18, 2003, [Reviewed]
  English, Scientific journal
• Langmuir monolayers and the transferred films of fluorinated amphiphiles containing vinyl groups　　　　　　　　　　　　　　　
  A Fujimori; T Araki; H Nakahara
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：247, Number：2, First page：351, Last page：360, Mar. 2002, [Reviewed]
  The monolayer behavior of long-chain esters of acrylic and methacrylic acids containing perfluoro, or partially fluorinated carbon chains at the air/water interface was studied by surface pressure-area isotherm measurements and Brewster angle microscopy. It has been found that a minor change in the chemical structures of these fluorinated amphiphiles, such as a hydrogen substituted at the omega-position of the hydrophobic fluorocarbon tails instead of a fluorine as well as hydrophilic vinyl ester groups inserted between acrylates and methacrylates, induces a drastic change in the isotherms for the monolayers, suggesting different molecular orientation and packing in the films. The monolayers were transferred by horizontal lifting, Langmuir-Blodgett, and surface-lowering methods to give the X-, Y-, and Z-type films, respectively. These films were characterized by scanning probe microscopy, to clarify the mesoscopic surface structures of the molecular films exposed with the hydrophilic or hydrophobic moieties in air, depending upon the dipping methods. The Z-type films with the outermost surface of the fluorinated substituents were examined in relation to the frictional properties that strongly depend upon the fluorine and the hydrogen atoms at the end of the hydrophobic fluorocarbon chains, which is controllable at the atomic level. (C) 2002 Elsevier Science (USA).
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1006/jcis.2001.8107
  DOI ID：10.1006/jcis.2001.8107, ISSN：0021-9797, CiNii Articles ID：80015203631, PubMed ID：16290474, Web of Science ID：WOS:000174400800011
• Polarized near edge x-ray absorption fine structure spectroscopic study on organized molecular films of fluorinated comb polymers with various chain lengths　　　　　　　　　　　　　　　
  A Fujimori; T Araki; H Nakahara; E Ito; M Hara; H Ishii; Y Ouchi; K Seki
  LANGMUIR, Volume：18, Number：4, First page：1437, Last page：1440, Feb. 2002, [Reviewed]
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/la011177p
  DOI ID：10.1021/la011177p, ISSN：0743-7463, Web of Science ID：WOS:000174009300071
• In-plane X-ray diffraction and polarized NEXAFS spectroscopic studies on the organized molecular films of fluorinated amphiphiles with vinyl esters and their comb-polymers　　　　　　　　　　　　　　　
  A Fujimori; T Araki; H Nakahara; E Ito; M Hara; H Ishii; Y Ouchi; K Seki
  CHEMICAL PHYSICS LETTERS, Volume：349, Number：1-2, First page：6, Last page：12, Nov. 2001, [Reviewed]
  Layer structures and the molecular packing in the two-dimensional lattice were studied by using the in-plane X-ray diffractions in addition to the conventional small-angle XRD, and the polarized near-edge X-ray absorption fine structure (NEXAFS) spectra for the multilayers of fluorinated amphiphiles with vinyl groups and their comb-polymers containing fluorocarbons as the side-chains. These molecular lattices were significantly different from the bulk crystals due to the film compression.. and NEXAFS results show that the molecular arrangements of the fluorocarbon sidechains were strongly influenced by atoms at the omega -position of the fluorocarbon-chains. (C) 2001 Elsevier Science B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/S0009-2614(01)01196-4
  DOI ID：10.1016/S0009-2614(01)01196-4, ISSN：0009-2614, CiNii Articles ID：80012882262, Web of Science ID：WOS:000172603600002
• Molecular Aggregation States and Polymerizability of Potassium and Calcium 10-Undecenoates in Aqueous Systems　　　　　　　　　　　　　　　
  Y. Shibasaki; H. Saitoh; A. Fujimori
  Stud. Sur. Sci. Cat., Volume：132, First page：181, Last page：184, 2001, [Reviewed]
  DOI：https://doi.org/10.1016/S0167-2991(01)82064-4
  DOI ID：10.1016/S0167-2991(01)82064-4
• Monolayer Assemblies of Comb-Like Polymers Containing Fluorocarbons with Different Chain Length　　　　　　　　　　　　　　　
  A. Fujimori; T. Araki; Y. Shibasaki; H. Nakahara
  Stud. Sur. Sci. Cat., Volume：132, First page：541, Last page：544, 2001, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1016/S0167-2991(01)82130-3
  DOI ID：10.1016/S0167-2991(01)82130-3
• Formation and Structure of Organized Molecular Films of Fluorinated Amphiphiles with Vinyl Group　　　　　　　　　　　　　　　
  A. Fujimori; T. Araki; H. Nakahara
  Stud. Sur. Sci. Cat., Volume：132, First page：457, Last page：460, 2001, [Reviewed]
  English, Scientific journal
• Effect of the atoms in outermost layers upon friction behavior of organized molecular films of comb-polymers containing fluorocarbon chains　　　　　　　　　　　　　　　
  A Fujimori; T Araki; H Nakahara
  CHEMISTRY LETTERS, Volume：29, Number：8, First page：898, Last page：899, Aug. 2000, [Reviewed], [Lead]
  Several newly synthesized comb-polymers with fluorocarbon side-chains have been found to form stable monolayers on the water surface, which could be deposited on solid substrates as the Z-films. Friction behavior of the Z-films measured by atomic force microscopy has been clearly affected by the atom (-F/-H) of ends of the fluorocarbon chains exposed in the outermost layers of the polymer as well as those of the corresponding monomer Z-films.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2000.898
  DOI ID：10.1246/cl.2000.898, ISSN：0366-7022, eISSN：1348-0715, CiNii Articles ID：10004953836, Web of Science ID：WOS:000089081500026
• Influence of molecular arrangement on the gamma-ray-irradiation solid-state polymerization of 1-octadecyl vinyl ether with a characteristic polymorphism　　　　　　　　　　　　　　　
  A Fujimori; H Saitoh; Y Shibasaki
  JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, Volume：37, Number：20, First page：3845, Last page：3853, Oct. 1999, [Reviewed]
  The polymorphic behavior of 1-octadecyl vinyl ether was investigated by DSC and X-ray diffraction measurements under various temperatures. In DSC measurement of 1-octadecyl vinyl ether in the temperature range of -30 to approximately 50 degrees C, four transition peaks were observed on heating, whereas three transition peaks appeared on cooling. The phase-transition behavior was investigated by the repeating scanning DSC measurements. It was concluded that this compound exhibited four crystalline modifications: alpha, sub alpha, beta(0), and beta(1). It was confirmed by the temperature-controlled X-ray diffraction measurement that these phase transitions are attributed to the change of crystal systems from hexagonal packing (alpha form) to a distorted orthorhombic (O perpendicular to') system (beta(1) form) via orthorhombic (O perpendicular to) (sub alpha form) and intermediate beta(0) form, although the beta(0) form has not yet been clarified. In the gamma-ray-irradiation solid-state polymerization for these crystal forms of this compound, the polymerizability of the sub alpha form is higher than that of other forms, and that of the a form is lowest. The polymerizability demonstrated an unusual increase at a temperature of -83.6 degrees C, probably because the cationic polymerization mechanism is dominant over that of the free radical. (C) 1999 John Wiley & Sons, Inc.
  JOHN WILEY & SONS INC, English, Scientific journal
  DOI：https://doi.org/10.1002/(SICI)1099-0518(19991015)37:20<3845::AID-POLA13>3.0.CO;2-P
  DOI ID：10.1002/(SICI)1099-0518(19991015)37:20<3845::AID-POLA13>3.0.CO;2-P, ISSN：0887-624X, CiNii Articles ID：80011348517, Web of Science ID：WOS:000082937500013
• Polymorphism of acrylic and methacrylic acid esters containing long fluorocarbon chains and their polymerizability　　　　　　　　　　　　　　　
  A Fujimori; H Saitoh; Y Shibasaki
  JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, Volume：57, Number：3, First page：631, Last page：642, Sep. 1999, [Reviewed]
  The molecular aggregation of acrylic and methacrylic acid esters containing long-fluorocarbon chains: 2-(perfluoroalkyl)ethyl acrylate (FF(n)EA) and 2-(perfluoroalkyl)ethyl methacrylate (FF(n)EMA) (F(CF2)(n)CH2CH2OCOC(X)=CH2, where X=H, CH3 and n=6, 8, 10) was investigated by differential scanning calorimetry (DSC) and temperature controlled X-ray powder diffraction measurement. These compounds exhibited some characteristic polymorphic behaviors depending on the length of fluorocarbon chain and the alpha-position methyl group. The solid-state polymerization by gamma-ray irradiation was studied for these compounds in the various crystal forms. In the solid-state polymerization, highest polymerizability was observed in the crystal form that exists in the highest temperature region for each compound.
  SPRINGER, English, Scientific journal
  ISSN：1388-6150, eISSN：1572-8943, Web of Science ID：WOS:000083716900002
• Polymorphism of Acrylic and Methacrylic Acid Esters Containing Long Fluorocarbon Chains and Their Polymerizability　　　　　　　　　　　　　　　
  A. Fujimori; H. Saitoh; Y. Shibasaki
  J. Therm. Anal., Volume：57, Number：3, First page：631, Last page：642, 1999, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1023/A:1010113420330
  DOI ID：10.1023/A:1010113420330, ISSN：1418-2874, CiNii Articles ID：80010762575

• Regularity Maintenance Property of Nano-mille-feuille Structural Matters　　　　　　　　　　　　　　　
  Fujimori, Atsuhiro
  Accounts of Material and Surface Research, Volume：7, Number：2, First page：35, Last page：42, Apr. 2022, [Reviewed], [Lead, Last, Corresponding]
  Japanese, Introduction scientific journal
  共同研究・競争的資金等ID：36920489
• Synthesis and the properties of an ABA type terpolymer based on poly(N-substituted p-benzamide) and polypropyleneglycol　　　　　　　　　　　　　　　
  Yuji Shibasaki; Shinya Masukawa; Yoshiyuki Oishi; Atsuhiro Fujimori
  ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Volume：248, Aug. 2014
  AMER CHEMICAL SOC, English, Summary international conference
  ISSN：0065-7727, Web of Science ID：WOS:000349167405266
• 中性子準弾性散乱によるフッ素系高分子のダイナミクスと気体透過性の相関
  松葉豪; 乳井樹; 佐藤修一; 永井一清; 藤森厚裕; 菊地龍弥; 中島健次
  日本中性子科学会年会講演概要集, Volume：12th, First page：44, 07 Dec. 2012
  Japanese
  J-Global ID：201302214970376245
• 報告 平成22年度 繊維学会年次大会 セッション2「繊維・高分子材料の機能」　　　　　　　　　　　　　　　
  富永洋一; 藤森厚裕
  Volume：66, Number：8, 2010
• 単分子膜中でも，官能基レベルの配向がわかる！~LB膜の偏光NEXAFS測定システム　　　　　　　　　　　　　　　
  藤森厚裕
  Volume：4, 2010
• 貝，骨，歯の成分はこうして出来あがる！遂に見た！！バイオミネラルの核形成メカニズム　　　　　　　　　　　　　　　
  藤森厚裕
  Volume：66, Number：10, 2010
• 超薄分子組織膜の構造化学　　　　　　　　　　　　　　　
  藤森厚裕
  Volume：35, Number：4, 2010
• 報告 平成22年度 第41回繊維学会夏季セミナー　　　　　　　　　　　　　　　
  大石不二夫; 前田裕平; 荻野賢司; 保城秀樹; 増子冨美; 斉藤雅春; 澤渡千枝; 薩本弥生; 藤森厚裕; 清水秀信
  Volume：66, Number：10, First page：P.354, Last page：P.361, 2010
  Japanese
  DOI：https://doi.org/10.2115/fiber.66.P_354
  DOI ID：10.2115/fiber.66.P_354, ISSN：0037-9875, CiNii Articles ID：130004434245
• The departure of a self-supporting young researcher's ship. (独立助教の船出)　　　　　　　　　　　　　　　
  A. Fujimori
  Volume：59, Number：2, First page：71, Last page：71, 2010
• 長鎖アルキルアンモニウム-Metal(dmit)2電荷移動錯体組織化膜の分子配列形成とエピタキシャル成長　　　　　　　　　　　　　　　
  藤森厚裕; 帯刀陽子
  Volume：61, 2010
• Molecular Arrangement and Surface Morphology of Organized Films of Comb Copolymers Containing Functionalized Groups　　　　　　　　　　　　　　　
  Atsuhiro Fujimori
  Volume：47, Number：10, First page：349, Last page：372, 2010, [Lead, Last, Corresponding]
  Japanese, Introduction scientific journal
• Formation of Molecular Arrangement in the Organized Molecular Films of Alkylammonium-Metal(dmit)2 Charge-transfer Complexes and Their Epitaxial Growth　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Yoko Tatewaki
  Volume：61, 2010
• 報告 平成21年度 第40回繊維学会夏季セミナー　　　　　　　　　　　　　　　
  堀 照夫; 山本由江; 堀口 智之; 久田研次; 藤森厚裕; 山崎睦生; 斉藤雅春; 武野明義; 土田 亮
  Volume：65, Number：10, First page：394, Last page：399, 2009
• Surface Morphological Changes in Monolayers of Aromatic Polyamides Containing Various N-alkyl Side-chains (側鎖に鎖長の異なるアルキル基を有する芳香族ポリアミド単分子膜の表面形態変化)　　　　　　　　　　　　　　　
  A. Fujimori; Y. Shibasaki
  Volume：60, First page：57, Last page：60, 2009
• Molecular Arrangement and Surface Morphology of Organized Molecular Films for Aromatic Polyamides Containing Alkyl Groups as the Side-chains　　　　　　　　　　　　　　　
  N. Sato; S. Chiba; Y. Abe; Y. Shibasaki; A. Fujimori
  2009
• Changes in Fine Structure and Lamellae Arrangement of Fluorinated “Crystalline” Optical Fiber Caditate with Drawing　　　　　　　　　　　　　　　
  A. Fujimori
  2009
• Structural control of functionalized groups in organized molecular films of comb copolymers (組織分子膜の手法による櫛型共重合体組織分子膜中における機能性原子団の配列制御)　　　　　　　　　　　　　　　
  A. Fujimori
  Volume：58, First page：44, Last page：47, 2008
• Changes in Lamellea Arrangement and Fine Structure of “Crystalline” Fluorinated Plastic Optical Fibers with Drawing (“結晶性”フッ素樹脂透明ファイバーの延伸に伴うラメラ配列と微細構造変化)　　　　　　　　　　　　　　　
  A. Fujimori
  Volume：59, First page：54, Last page：57, 2008
• Formation and structure of organized molecular films for fluorinated comb copolymers　　　　　　　　　　　　　　　
  Atsuhiro Fujimori; Ryosuke Masuya; Toru Masuko; Eisuke Ito; Masahiko Hara; Kaname Kanai; Yukio Ouchi; Kazuhiko Seki; Hiroo Nakahara
  POLYMERS FOR ADVANCED TECHNOLOGIES, Volume：17, Number：9-10, First page：653, Last page：663, Sep. 2006
  The molecular orientation in monolayer and multilayer films of fluorinated comb copolymers with various monomer ratios can be characterized by in-plane and out-of plane X-ray diffraction (XRD), near-edge X-ray absorption fine structures (NEXAFS) spectroscopy at the C K-edges, and atomic force microscopic observation. And further, the fine structure in the solid state and phase transition behavior of newly synthesized comb copolymers having fluorocarbon and hydrocarbon side-chains were investigated by temperature controlled wide-angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC). From the WAXD profiles, two kinds of short spacing peaks based on the formation of the sub-cell for fluorinated and hydrogenated side-chains were confirmed at 5.0 and 4.1 angstrom, respectively. Furthermore, two kinds of endothermic peaks, which corresponded to melting peaks of both side-chain crystals, appeared in the heating process of the DSC thermograms. From these experimental findings, the phase separation structure having the independently packed immiscible side-chain crystalline formed in the whole polymer crystal. In addition, it was found that these comb polymers formed highly ordered (double) layer structures estimated using WAXD and small-angle X-ray scattering (SAXS). These fluorinated comb copolymers form the monolayer on the water surface and their transferred film with phase separated structure at nanometer size on the solid. There were hydrogenated domains at 10-20 nm diameter scales in these phase separated surface structures of the monolayers. From these experimental results, these copolymer monolayers are expected to be used as in new molecular devices such as nano-lithography based on the surface patterning of polymer nano-materials. Copyright (c) 2006 John Wiley & Sons, Ltd.
  WILEY-BLACKWELL, English
  DOI：https://doi.org/10.1002/pat.790
  DOI ID：10.1002/pat.790, ISSN：1042-7147, eISSN：1099-1581, CiNii Articles ID：80018783429, Web of Science ID：WOS:000242884700008
• Newly nano-patterning based on the phase separation structure of organized molecular films containing fluorinated comb polymers(フッ素化櫛型高分子を含む組織分子膜中の相分離構造に基づく新規ナノパターニング)　　　　　　　　　　　　　　　
  A. Fujimori
  Volume：6, First page：33, Last page：36, 2005
• Change of molecular packing and orientation from monolayer to multilayers of hydrogenated and fluorinated carboxylates studied by in-plane X-ray diffraction together with NEXAFS spectroscopy at CK-edge　　　　　　　　　　　　　　　
  A Fujimori; Y Sugita; H Nakahara; E Ito; M Hara; N Matsuie; K Kanai; Y Ouchi; K Seki
  CHEMICAL PHYSICS LETTERS, Volume：387, Number：4-6, First page：345, Last page：351, Apr. 2004
  By applying the in-plane X-ray diffraction together with the NEXAFS spectroscopy to organized molecular films, the molecular orientation and packing from the monomolecular layers to multilayers of hydrogenated and fluorinated long-chain carboxylic acids and carboxylates were characterized. The two-dimensional molecular packing in the monolayers for cadmium salts of fatty acids was clearly different from those for fatty acids as well as those in the multilayers, whereas the fluorinated long-chain carboxylates had hexagonal packing of the rod like molecules common in both mono- and multilayers. This seems to be probably due to difference of molecular cohesive energy between hydrocarbons and fluorocarbons themselves. (C) 2004 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English
  DOI：https://doi.org/10.1016/j.cplett.2004.02.032
  DOI ID：10.1016/j.cplett.2004.02.032, ISSN：0009-2614, CiNii Articles ID：80016584372, Web of Science ID：WOS:000220620200026
• Formation of the newly greenish organized molecular film of long-chain diynoic acid derivatives by photopolymerization and its structural study using NEXAFS spectroscopy.　　　　　　　　　　　　　　　
  A. Fujimori; T. Masuko; M. Ishitsuka; H. Nakahara; E. Ito; M. Hara; K. Kanai; Y. Ouchi; K. Seki
  2004
• Crystallization characteristics of intercalated Poly(L-lactide)/organo-modified montmorillonite hybrids　　　　　　　　　　　　　　　
  N. Ninomiya; P. H. Nam; A. Fujimori; T. Masuko
  First page：143, Last page：148, 2004
• Change of Molecular Packing and Orientation from monolayer to multilayers of hydrogenated and fluorinated carboxylate studied by in-plane X-ray diffraction together with NEXAFS spectroscopy at C K-edge　　　　　　　　　　　　　　　
  A. Fujimori; H. Nakahara; K. Seki; Y. Ouchi
  Volume：22, First page：15, Last page：16, 2004
• Hierarchical structures of intercalated poly(L-lactide) / organo-modified montmorillonite Hybrids　　　　　　　　　　　　　　　
  P. H. Nam; N. Ninomiya; A. Fujimori; T. Masuko
  2004
• Characterization of Organized Molecular Films of Polymers by NEXAFS Spectra　　　　　　　　　　　　　　　
  FUJIMORI Atsuhiro; NAKAHARA Hiroo
  Kobunshi, Volume：52, Number：2, First page：83, Last page：88, 2003
  The Society of Polymer Science, Japan, Japanese
  DOI：https://doi.org/10.1295/kobunshi.52.83
  DOI ID：10.1295/kobunshi.52.83, ISSN：0454-1138, CiNii Articles ID：10010113077, CiNii Books ID：AN00084926
• NEXAFS Studies in Molecular Organized Films of Fluorinated Comb-Polymer　　　　　　　　　　　　　　　
  T. Araki; A. Fujimori; H. Nakahara; E. Ito; M. Hara; H. Ishii; Y. Ouchi; K. Seki; Y. Kitajima
  Volume：18, First page：36, Last page：36, 2000
• Radiation Polymerization of Functional Monomers in Oriented Molecular System (配向分子集合系における単量体分子の放射線重合(II))　　　　　　　　　　　　　　　
  Y. Shibasaki; H. Saitoh; I. Hattori; Y. Ming; A. Fujimori
  First page：17, Last page：22, 1999

• Research, development, and applications of carbon nanotubes　　　　　　　　　　　　　　　
  川崎 晋司; 中田 遼真; 藤森 厚裕; その他27名, [Joint work]
  Feb. 2025
  Japanese, Total pages：iv, 199p
  CiNii Books：http://ci.nii.ac.jp/ncid/BD10925627
  ISBN：9784781318615, CiNii Books ID：BD10925627
• Advances in Materials Science Research, Vol. 70　　　　　　　　　　　　　　　
  Ryoma Terui; Atsuhiro Fujimori; etc, [Joint work], Chapter 9: Structure and Properties of Azacalixarene-Polyethylene Glycol Hydrophobic Copolymers Containing s-Triazine Rings
  Nova Science Publishers, Jan. 2025
  ISBN：9798895303030
• Advances in Materials Science Research, Vol. 68　　　　　　　　　　　　　　　
  Yuna Yamada; Atsuhiro Fujimori; etc, [Joint work], Chapter 1: The Proposal of a New Preparation Method for Nanocellulose at the Air/Water Interface and Its Application to Starch
  Nova Science Publishers, Mar. 2024
  ISBN：9798891136861
• Advances in Chemistry Research, Vol. 82　　　　　　　　　　　　　　　
  Yuna Yamada; Yuto Otsuki; Momo Maeda; Atsuhiro Fujimori, [Joint work], Chapter 5: DNA Adsorption to The Mixed Monolayer Template Including Comb Copolymer with Diamino-s-Triazine Ring
  Nova Science Publishers, Nov. 2023
  ISBN：9798891131798
• Advances in Materials Science Research, Vol. 58　　　　　　　　　　　　　　　
  Yuto Otsuki; Atsuhiro Fujimori; etc, [Joint work], Chapter 6: Molecular Arrangement of Long-Chain Ferrocenyl Derivatives Having Asymmetric Carbon in Their Organized Molecular Films and Formation of Its Helical Nanofibers
  Nova Science Publishers, Dec. 2022
  ISBN：9798886974881
• 樹脂/フィラー複合材料の界面制御と評価　　　　　　　　　　　　　　　
  早崎 拓登; 藤森 厚裕; その他72名, [Joint work]
  May 2022
  Japanese, Total pages：550p
  CiNii Books：http://ci.nii.ac.jp/ncid/BC15201310
  ISBN：9784861048821, CiNii Books ID：BC15201310
• Advances in Materials Science Research, Vol. 50　　　　　　　　　　　　　　　
  Takuto Hayasaki; Atsuhiro Fujimori; etc., [Joint work], Chapter 4: Particle Dispersion State of Biodegradable Polymer / Organo-Modified Nanoclay Composite and Its Structural Changes Due to Drawn Deformation
  Nova Science Publishers, Feb. 2022
  Takuto Hayasaki; Atsuhiro Fujimori; etc
  ISBN：9781685076559
• An Introduction to Aluminosilicates　　　　　　　　　　　　　　　
  S. Hirayama; Y. Abiko; A. Fujimori; etc, [Joint work], Surface Modification of Aluminosilicate by Amphiphiles. –Fabrication of Ultrathin Films–
  Nova Science Publishers, Apr. 2020
  ISBN：9781536172508
• フッ素樹脂の最新動向　　　　　　　　　　　　　　　
  澤田 英夫; 藤森 厚裕; その他, [Joint work], 第14章 結晶性フッ素系共重合体による耐熱性透明材料の創製
  シーエムシー出版, Feb. 2020
  Japanese, Total pages：vii, 229p
  CiNii Books：http://ci.nii.ac.jp/ncid/BB29700253
  ISBN：9784781313962, CiNii Books ID：BB29700253
• Novel Aspects of Diamond (2nd Edition)　　　　　　　　　　　　　　　
  T. Yunoki; A. Fujimori, [Joint work], Chapter 13, Surface-Modification of Nanodiamond by Amphiphilic Materials – Formation of organized particle layers and nanohybrid preparation with crystalline transparent polymers –(pp.461-476)
  Springer, 2019
• Advances in Materials Science Research, volume 39　　　　　　　　　　　　　　　
  Y. Abiko; S. Hirayama; A. Fujimori, [Joint work], Chapter 3, Influence on the Lamellae Structural Formation of Perfluorinated Copolymers Having Fluorinated Ethylene Oxide as Side-Chain
  Nova Science Publishers, 2019
• カーボンナノチューブの表面処理・分散技術と複合化事例　　　　　　　　　　　　　　　
  平山周平; 藤森厚裕, [Joint work]
  2019
• Advances in Nanotechnology, volume 21　　　　　　　　　　　　　　　
  Y. Shidara; T. Yunoki; A. Fujimori, [Joint work], Chapter 2, Preparation and Its Functionality of Fluorinated Polymer/Magnetic Nanoparticle Composites with Well-Dispersion of Organo-Modified Nanofiller (pp.175-213)
  Nova Science Publishers, 2018
• 高耐熱樹脂の開発事例集 –パワーデバイス、ディスプレイ、電動車両への応用に向けて–　　　　　　　　　　　　　　　
  中川由人; 藤森厚裕, [Joint work]
  2018
• Organic Polymers: Advances in Research and Applications　　　　　　　　　　　　　　　
  Y. Nakagawa; A. Fujimori, [Joint work], Chapter 2, Proposals for Densely Packed Rearrangement and Screening Techniques of the Potential Crystallization Ability for Organic Polymers That Possess Bulky Aromatic Rings (pp.97-140)
  Nova Science Publishers, 2018
• Polymer Research: Communicating Current Advances, Contributions, Applications and Educational Aspects　　　　　　　　　　　　　　　
  T. Yunoki; S. Hirayama; A. Fujimori, [Joint work], Chapter 2, Topological "Interfacial" Polymer Chemistry (pp.76-87)
  Formatex, 2018
• Fluorinated Polymers: Volume 2: Applications
  Ameduri Bruno; Sawada Hideo; Atsuhiro Fujimori; etc, [Joint work], Chapter 11 of Fabrication of Flexible Transparent Nanohybrid with Heat-resistant Property by Fluorinated Crystalline Polymer (pp. 301-352))
  Royal Society of Chemistry, Nov. 2017
  English, Total pages：xxiii, 372 p.
  CiNii Books：http://ci.nii.ac.jp/ncid/BB29519558
  ISBN：9781782629160, CiNii Books ID：BB29519558
• 光学樹脂の屈折率、複屈折制御技術 –高画質対応樹脂レンズ、有機ＥＬディスプレイ、光学フィルム開発へ向けて–　　　　　　　　　　　　　　　
  設樂雄作; 藤森厚裕, [Joint work]
  2017
• Nanosheets and nanospheres : types, applications and research insights
  Wright Deborah; Manami Iizuka; Atsuhiro Fujimori; etc, [Joint work], Chapter 3: Fabrication and Function of "Polymer Nanosphere Multilayered Organization"
  Nova Science Publishers, Nov. 2016
  English, Total pages：ix, 182 p.
  CiNii Books：http://ci.nii.ac.jp/ncid/BB22444268
  ISBN：9781536102031, CiNii Books ID：BB22444268
• Nanofiber Research: Reaching New Heights　　　　　　　　　　　　　　　
  Mohammed Rahman; Manami Iizuka; Rie Yamato; Atsuhiro Fujimori; etc, [Joint work], Chapter 11: Control of Hierarchical Structure of Crystalline Nanofibers Based on the Cooperative Phenomena of Functional Molecular Group as the Target of Expression of New Physical Properties - Creation of Molecular Conductors and Enhancement of Thixotropic Ability -
  InTech open access publisher, Oct. 2016
  Total pages：254
  ISBN：9535125281, ASIN：9535125281, EAN：9789535125280
• 界面活性剤評価・試験法 : 製法・物性・応用・分析・環境　　　　　　　　　　　　　　　
  日本油化学会; 界面活性剤評価; 試験法編集委員会; 藤森 厚裕; その他, [Joint work], 第2章2節「表面・界面物性」3項(不溶性膜の性質), b. “累積分子膜”
  日本油化学会, Mar. 2016
  Japanese, Total pages：xii, 395p
  CiNii Books：http://ci.nii.ac.jp/ncid/BB22336957
  ISBN：9784931249080, CiNii Books ID：BB22336957
• Encyclopedia of polymeric nanomaterials
  Shiro Kobayashi; Müllen, Klaus; Atsuhiro Fujimori,etc, [Joint work], pp. 1045-1050 (Vol. 2 (H ~ Pi)), Langmuir-Blodgett Films
  Springer, 2015
  English, Total pages：3v. (liv, 2617p. )
  CiNii Books：http://ci.nii.ac.jp/ncid/BB1904297X
  ISBN：9783642296475, CiNii Books ID：BB1904297X
• Selected Topics on Optical Fibers Technology　　　　　　　　　　　　　　　
  Moh Yasin; Sulaiman W. Harun; Hamzah Arrof; Atsuhiro Fujimori; etc, [Joint work], Chapter 15: “Crystalline” Plastic Optical Fiber with Excellent Heat-resistant Property
  InTech open access publisher, 2012
  ISBN：9789535100911
• 新しい局面を迎えた界面の分子科学 : 機能デザインと計測技術の展開　　　　　　　　　　　　　　　
  日本化学会; 藤森厚裕; その他, [Joint work], p.36: 単分子膜中でも，官能基レベルの配向がわかる！~LB膜の偏光NEXAFS測定システム
  Mar. 2011
  Japanese, Total pages：199p, 図版[4]p
  CiNii Books：http://ci.nii.ac.jp/ncid/BB05209079
  ISBN：9784759813647, CiNii Books ID：BB05209079

• テフロン系高分子をLangmuir膜にする方法 －"溶けない"フッ素樹脂を単層化した戦略－　　　　　　　　　　　　　　　
  藤森 厚裕
  京都大学化学研究所 持続可能社会創造ユニット・令和6年度第1回ミーティング, Jun. 2024, [Invited]
  Japanese, Invited oral presentation
  共同研究・競争的資金等ID：46476018;46106369
• ナノカーボン最外層表面の有機修飾法を活用した高分子複合材料の調製とその構造物性　　　　　　　　　　　　　　　
  藤森 厚裕
  第3回 プラスチック成形加工学会 ナノセルロース・ナノカーボン専門委員会, Nov. 2023, [Invited]
  Japanese, Invited oral presentation
  共同研究・競争的資金等ID：36920529
• フルオロカーボン系分子団による界面膜の形成と構造，および機能　　　　　　　　　　　　　　　
  藤森 厚裕
  第74回 コロイドおよび界面化学討論会一般シンポジウム 有機フッ素化合物の関わる界面化学の新展開, Sep. 2023, [Invited]
  Japanese, Invited oral presentation
  共同研究・競争的資金等ID：36920529
• フッ化炭素鎖修飾ナノフィラーの物理化学 –溶媒中ナノ分散と高分子系ナノコンポジット創出–　　　　　　　　　　　　　　　
  藤森 厚裕
  Oct. 2018, [Invited], [Domestic conference]
  Japanese, Invited oral presentation
• 結晶性フッ素ポリマー/フッ素化ホスホン酸修飾 "透明"ナノハイブリッドの創出　　　　　　　　　　　　　　　
  藤森 厚裕
  Oct. 2017, [Invited], [Domestic conference]
  Japanese, Invited oral presentation
• New Proposal of Transparent Technology of "Crystalline" Polymer and Expansion into Its Nano-hybrid with Functional Filler　　　　　　　　　　　　　　　
  FUJIMORI Atsuhiro
  International S & T Cooperation Program, Sep. 2015, [Invited], [International conference]
  English, Invited oral presentation
• 結晶性高分子透明化技術の新提案と，その機能性フィラーナノ複合化への展開　　　　　　　　　　　　　　　
  藤森 厚裕
  Jul. 2015, [Invited], [Domestic conference]
  Japanese, Invited oral presentation
• 全フッ素化，ならびに部分フッ素化結晶性フッ素ポリマーの機能革新 –高密度非晶鎖制御とナノハイブリッド化–　　　　　　　　　　　　　　　
  藤森 厚裕
  Jun. 2015, [Invited], [Domestic conference]
  Japanese, Invited oral presentation
• 結晶性高分子による耐熱性透明材の構築と，新規表面修飾技術を用いた有機化フィラーとのナノ複合化　　　　　　　　　　　　　　　
  藤森 厚裕
  Mar. 2014, [Invited]
  Mar. 2014 - Mar. 2014, Japanese, Invited oral presentation
• 耐熱型”結晶性”透明フレキシブルフィルムの開発とナノ複合化　　　　　　　　　　　　　　　
  藤森 厚裕
  Sep. 2013, [Invited]
  Sep. 2013 - Sep. 2013, Japanese, Invited oral presentation
• 延伸加工による結晶性高分子の構造制御と透明化　　　　　　　　　　　　　　　
  藤森 厚裕
  Aug. 2013, [Invited]
  Aug. 2013 - Aug. 2013, Japanese, Invited oral presentation
• 全フッ素化結晶性樹脂による高分子透明化手法の新提案　　　　　　　　　　　　　　　
  藤森 厚裕
  Aug. 2013, [Invited]
  Aug. 2013 - Aug. 2013, Japanese, Invited oral presentation
• “結晶性”フッ素樹脂透明材料による耐熱型・光伝送体の構築　　　　　　　　　　　　　　　
  藤森 厚裕
  Dec. 2012, [Invited]
  Dec. 2012 - Dec. 2012, Japanese, Invited oral presentation
• “結晶性”フッ素樹脂による耐熱型プラスチック光ファイバーの開発　　　　　　　　　　　　　　　
  藤森 厚裕
  Dec. 2012, [Invited]
  Dec. 2012 - Dec. 2012, Japanese, Invited oral presentation
• 結晶性フッ素樹脂の構造-機能相関 –造核剤添加効果，クレイナノコンポジット形成から耐熱性透明材料の形成まで–　　　　　　　　　　　　　　　
  藤森 厚裕
  Oct. 2012, [Invited]
  Oct. 2012 - Oct. 2012, Japanese, Invited oral presentation
• 超薄分子組織膜の構造化学　　　　　　　　　　　　　　　
  藤森 厚裕
  Mar. 2012, [Invited]
  Japanese, Invited oral presentation
• ソフト界面が形成誘起する超薄分子組織体の構造化学 -ポリマーナノフィルムからポリマーナノスフィアまで-　　　　　　　　　　　　　　　
  藤森 厚裕
  Mar. 2012, [Invited]
  Japanese, Invited oral presentation
  共同研究・競争的資金等ID：25103191
• 超薄分子組織膜の構造化学-高分子LB膜からポリマーナノスフィア層状組織体まで-　　　　　　　　　　　　　　　
  藤森 厚裕
  Sep. 2011, [Invited]
  Japanese
• 超薄高分子組織膜の構造化学-LB膜から積層粒子層状組織体まで-　　　　　　　　　　　　　　　
  藤森 厚裕
  Jun. 2011, [Invited]
  Japanese, Invited oral presentation
• 超薄高分子組織膜の構造化学-LB膜から粒子積層構造体まで-　　　　　　　　　　　　　　　
  Mar. 2011, [Invited]
  Mar. 2011 - Mar. 2011, Japanese
• 結晶性フッ素樹脂の構造科学-ラメラ・球晶形成から造核剤添加効果，透明材料の構築まで　　　　　　　　　　　　　　　
  藤森 厚裕
  第59回高分子討論会, Sep. 2010
  Japanese, Invited oral presentation
• 超薄分子組織膜の構造化学　　　　　　　　　　　　　　　
  Sep. 2010, [Invited]
  Japanese, Invited oral presentation
• 機能性原子団を含む櫛型共重合体組織化膜の形成と構造　　　　　　　　　　　　　　　
  藤森 厚裕
  Sep. 2009, [Invited]
  Japanese, Invited oral presentation
• Structural Control of Organized Molecular Films for Comb Copolymers Containing Functionalized Groups and Its Structural Estimation　　　　　　　　　　　　　　　
  Atsuhiro FUJIMORI
  Asian International Symposium, Mar. 2009, [Invited]
  English, Invited oral presentation
• 結晶性フッ素樹脂ファイバーの微細構造評価　　　　　　　　　　　　　　　
  藤森 厚裕
  第57回高分子討論会, Sep. 2008
  Japanese, Invited oral presentation
• Structural control of organized molecular films for comb polymers and its structural estimation　　　　　　　　　　　　　　　
  藤森厚裕; 舛屋諒介; 増子徹; 伊藤英輔; 原正彦; 金井要; 大内幸雄; 関一彦; 中原弘雄
  Dec. 2005, [Invited]
  Japanese, Invited oral presentation
• 組織分子膜の手法による両親媒性ジアセチレン誘導体の光重合とNEXAFS分光法による構造評価　　　　　　　　　　　　　　　
  藤森 厚裕
  Mar. 2004, [Invited]
  Japanese, Invited oral presentation

• THE CHEMICAL SOCIETY OF JAPAN

• ハイパーブランチユニットを有する網目状共重合体の形状記憶特性制御と界面膜創出　　　　　　　　　　　　　　　
  Apr. 2024 - Mar. 2027
  Grant amount(Total)：4550000, Direct funding：3500000, Indirect funding：1050000
  Grant number：24K08538
  論文ID：49833549, 講演・口頭発表等ID：49565788
• 界面活性剤修飾ナノダイヤモンドの集積・積層化による構造色発現と，抗菌性チキソトロピー塗膜の開発　　　　　　　　　　　　　　　
  Dec. 2023 - Mar. 2025
  Principal investigator
  Grant number：J-23-7
  論文ID：49833549, 講演・口頭発表等ID：49565788
• Establishment of rare earth collection and desorption / recovery technology using interfacial film of polyguanamine derivatives containing cyclic moiety　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2021 - 31 Mar. 2024
  Saitama University
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  Grant number：21K05180
  論文ID：49833501, 講演・口頭発表等ID：49565837
• Material innovation by "jet black" polymer-based nanocomposite created by carbon nanotubes of less than 5 wt%　　　　　　　　　　　　　　　
  Iketani Science and Technology Foundation, Apr. 2022 - Mar. 2023
  Atsuhiro Fujimori, Saitama University
• Elucidation of the correlation between performance improvement of thixotropic additive molecules using castor oil-derived 12-hydroxystearic acid derivative and chirality control　　　　　　　　　　　　　　　
  Apr. 2021 - Mar. 2022
  Fujimori, Atsuhiro, Saitama University, Principal investigator
• 硬軟交互粒子積層によるナノ・ミルフィーユ創出とその物性増強起源の解明　　　　　　　　　　　　　　　
  Apr. 2019 - Mar. 2021
  Principal investigator
  Competitive research funding
  論文ID：33791235
• Organo-modified nanodiamond with excellent heat-resistance - nanodispersion in crystalline transparent polymer -　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2017 - 31 Mar. 2020
  Fujimori Atsuhiro, Saitama University
  Grant amount(Total)：4810000, Direct funding：3700000, Indirect funding：1110000
  Well-dispersed polymer/organo‐modified nanodiamond (ND) composites were created using crystalline fluorinated polymers as a matrix. Both fluorocarbon- and hydrocarbon-modified ND formed well-dispersed nanocomposites in polyvinylidene-fluoride-based fluorocopolymers. The former was prepared due to excellent miscibility, and the latter was obtained by the so-called "nucleation effect". Fabricating a nanocomposite by combining hydrocarbon-modified fine particles and a fluorinated polymer is not universally feasible, and this system was unique. Ethylene-tetrafluoroethylene and perfluoroalkoxyalkane polymers showing high-melting points cannot form a nanohybrid with hydrocarbon-modified inorganic nanoparticles. To form a nanocomposite via melt-compounding, the desorption temperature of the modified chain of the outermost surface of the organo-ND had to be increased. Phosphonic acid containing fluorocarbon chain-modified ND had satisfied all these requirements.
  Grant number：17K05986
• 結晶性フッ素樹脂に対する機能増強技術の新提案–革新的表面改質による無機微粒子ナノ複合化–　　　　　　　　　　　　　　　
  Jan. 2019 - Mar. 2020
  Principal investigator
  Competitive research funding
• The Role of Modifying Molecular Chains in the Formation of Organized Molecular Films of Organo-modified Inorganic Particles (16th International Conference on Organized Molecular Films (LB16, ICOMF-16), Helsinki, Finland, July, 2016.)　　　　　　　　　　　　　　　
  Apr. 2016 - Sep. 2016
  Principal investigator
  Competitive research funding
• Fabrication of Transparent Nanohybrids with Heat Resistance Using High-Density Amorphous Formation and Uniform Dispersion of Nanodiamond　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2013 - 31 Mar. 2016
  FUJIMORI Atsuhiro, Saitama University
  Grant amount(Total)：4940000, Direct funding：3800000, Indirect funding：1140000
  A new technology for the production of transparent material using a “crystalline” polymer is proposed in the present study. Further, transparent and flexible crystalline polymer nanohybrid film containing well-dispersed nanodiamond filler was fabricated. Partially fluorinated crystalline polymer with switchboard-type lamellae results in high transparency as a consequence of the formation of a high-density amorphous structure based on high-temperature drawing just below the melting point at 110 °C. Although the formation of nanohybrid materials composed of fluorinated-polymer/organo-modified nanocarbon is generally difficult, we confirmed the formation, via melt-compounding, using atomic force microscopy and wide-angle X-ray diffraction. Even though the polymer matrix/nanodiamond hybrid has remarkable aggregation properties, a well-dispersed state was achieved because of improvement in wettability obtained through surface modification of filler.
  Grant number：25410219
• 350 °C耐熱!初めて『結晶』で創る新奇フレキシブル透明プラスチックフィルムの開発に資する、高分子透明化技術の新提案(※選考委員奨励賞)　　　　　　　　　　　　　　　
  Apr. 2014 - Oct. 2015
  Principal investigator
  Competitive research funding
• ポリマーナノスフィア積層組織化膜のＸ線利用精密分子配向解析と機能化　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Apr. 2011 - Mar. 2013
  Saitama University
  Grant amount(Total)：3770000, Direct funding：2900000, Indirect funding：870000
  Grant number：23106703
  講演・口頭発表等ID：25103149
• Formation of layered organization of particle with ability of fluorescent-emission using a new polymer nanospheres　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), 2011 - 2012
  FUJIMORI Atsuhiro, Saitama University
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  We constructed a multiparticle layered organization of aromatic polyamides with rigid main chains and flexible side chains by the Langmuir-Blodgett (LB) technique, which resulted in a highly regular arrangement along the c-axis. The particle arrangement was estimated by performing out-of-plane X-ray diffraction (XRD) analysis and atomic force microscopic (AFM) observation. The results suggest that a double-particle layered structure (Y-type) is formed by the LB technique, forming amphiphilic particles at the air/water interface. Copolymers with highly hydrophobic carbazole contents and both hydrogenated and fluorinated side-chains also formed a single-particle layer at the air/water interface and exhibited multiparticle layers by a LB technique. Therefore, it is possible to control the formation of single- and double-particle layered structure using these techniques. Further, it was found that multiparticle layered organization of polymer nanospheres and polymer nanosheets could be formed simultaneously with the same component material.
  Grant number：23750251
• Contruction of "Crystalline" Heat Resistant Plastic Optical Fiber and Their Transparent Film with Excellent Light Conductivity　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), 2008 - 2009
  FUJIMORI Atsuhiro, Yamagata University
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  We developed a "crystalline" plastic optical fiber with excellent heat resistance and dimensional stability. For the practical use of this crystalline optical fiber in the near future, an accurate control of the solid-state structure is indispensable because of the necessity of reducing light refraction at the crystalline/amorphous interface. In the present study, changes in the fine structure and lamella arrangement upon drawing poly[tetrafluoroethylene-co-(perfluoroethylvinylether)] (abbrev. EFA) transparent crystalline fibers were investigated by using wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) methods. The EFA was crystallized as a lamella crystal in the fibers and formed a thicker lamella (thickness : at least 27nm). This polymer might form a "switchboard-type" lamella. Upon the drawing of the EFA fibers, four-point SAXS diagrams developed in the photograph, which implied that a particular type of layer structure, an alternately tilted lamella arrangement known as the herringbone, was formed. Moreover, the previously proposed packing mode of general fluorinated polymers was required to be modified from quasi-hexagonal to orthorhombic in a reciprocal lattice in order to assign all reflective indexes.
  Grant number：20750171
• フッ化炭素鎖を含む両親媒性化合物における分子組織膜の形成とその構造　　　　　　　　　　　　　　　
  2001 - 2002
  Grant amount(Total)：2000000, Direct funding：2000000
  Grant number：01J06735

• 潤滑油組成物　　　　　　　　　　　　　　　
  Patent right
• 潤滑油組成物　　　　　　　　　　　　　　　
  Patent right
• 表面修飾ナノダイヤモンド、前記表面修飾ナノダイヤモンドを含む分散液、及び複合材料　　　　　　　　　　　　　　　
  Patent right
• 表面修飾ナノダイヤモンド、前記表面修飾ナノダイヤモンドを含む分散液及び複合材料　　　　　　　　　　　　　　　
  Patent right
• 表面修飾ナノダイヤモンドおよびナノダイヤモンド分散液　　　　　　　　　　　　　　　
  Patent right