Thermoreversible helical fibers from photoreactive triphenylene-derived liquid crystals in liquid paraffin. Takuji Hirose; Yuka Kikuchi; Tomoaki Nakano; Tsukasa Ohno; Kengo Kawamura; Normazliana Binti Nazri; Atsuhiro Fujimori; Koichi Kodama; Mikio Yasutake
Heliyon,
Volume:9,
Number:11,
First page:e22037, Nov. 2023,
[International magazine]Liquid crystalline triphenylene derivatives, TPC1p-n (n = 6, 12, 14, 16) were prepared using p-alkoxycinnamate as the [2+2] photo-cyclization site. TPC1p-n (n = 12, 14, 16) showed Colr phase and gave crescent-shaped or helical fibers after UV-irradiated in liquid paraffin solutions at 90 and 110 °C in the Colr temperature range. The apparent photoreaction products were shown to be thermally reversible, i.e. they dissolved in liquid paraffin at high temperatures and reappeared on cooling, indicating that they were aggregates of oligomerized TPC1p-n. The reaction mechanism was discussed in terms of the structure of the liquid crystalline phase.
English, Scientific journal
DOI:https://doi.org/10.1016/j.heliyon.2023.e22037DOI ID:10.1016/j.heliyon.2023.e22037,
PubMed ID:38053870,
PubMed Central ID:PMC10694167 Rack-gear structures in columnar liquid crystal phases of trialkoxybenzyl pentafluorobenzoates and their influences on intercolumnar interdigitation and macroscopic morphologies Keiki Kishikawa; Hiromoto Nakagomi; Masaya Masuda; Yuto Suda; Ryuji Ushiki; Mikio Yasutake; Michinari Kohri; Tatsuo Taniguchi
LIQUID CRYSTALS,
Volume:50,
Number:2,
First page:319,
Last page:330, Jan. 2023
English, Scientific journal
DOI:https://doi.org/10.1080/02678292.2022.2142884DOI ID:10.1080/02678292.2022.2142884,
ISSN:0267-8292,
eISSN:1366-5855,
Web of Science ID:WOS:000881870800001 Electrochemical Properties and Electrochromism of 6-Aryl-1,3-bis(trimethylsilyl)fulvenes and Their Derivatives. Ryota Tatemura; Mikio Yasutake; Hidenori Kinoshita; Katsukiyo Miura
The Journal of organic chemistry,
Volume:87,
Number:1,
First page:172,
Last page:183, Jan. 2022,
[International magazine]In this study, we have disclosed intriguing electrochromic properties of 6-aryl-1,3-bissilylfulvenes. The electrolyte solutions (0.1 M n-Bu4NClO4 in acetonitrile or dichloromethane) of some 6-aryl-1,3-bissilylfulvenes showed notable color changes when superimposed negative voltages were applied to the solutions. Investigation of the substituents at position 6 revealed that the solution of 1,3-bissilyl-6-anthracenylfulvene exhibited chromic changes under both applied superimposed negative and positive voltages and exhibited a three-color electrochromism. Electrochromic properties of 1,6-diarylfulvenes derived from 6-aryl-1,3-bissilylfulvenes were also investigated. The aryl group at position 1 also contributed to the electrochromism of fulvenes.
English, Scientific journal
DOI:https://doi.org/10.1021/acs.joc.1c02133DOI ID:10.1021/acs.joc.1c02133,
PubMed ID:34913709 Discotic liquid crystals of transition metal complexes 58†: Novel phthalocyanine-based mesogenic monomers and polymers exhibiting spontaneous homeotropic alignment and helical tetragonal columnar structure Ayumi Suzuki-Ichihara; Makiko Sugibayashi-Kajita; Masahiro Ariyoshi; Mikio Yasutake; Kazuchika Ohta
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:25,
Number:9,
First page:800,
Last page:817, Sep. 2021
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424621500498DOI ID:10.1142/S1088424621500498,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000700303200003 Discotic liquid crystals of transition metal complexes 59: Parity effect of the number of d-electrons on the columnar mesomorphism and homeotropic alignment of 1,4-diazatriphenylenocyaninato metal(II) complexes Masahiro Shichi; Mikio Yasutake; Kazuchika Ohta
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:25,
Number:9,
First page:843,
Last page:857, Sep. 2021
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424621500668DOI ID:10.1142/S1088424621500668,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000700303200007 Discotic liquid crystals of transition metal complexes 57†: X-ray diffraction halo jumps originated from sudden free rotation of substituent groups to induce mesomorphism Takahiro Nishiguchi; Kouki Sugiyama; Hiromu Nakamura; Mikio Yasutake; Kazuchika Ohta
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:24,
Number:4,
First page:563,
Last page:576, Apr. 2020
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424620500042DOI ID:10.1142/S1088424620500042,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000522812700007 Polymeric fibers and microporous films by photo-crosslinking of triphenylene-derived liquid crystals Takuji Hirose; Zhe Xu; Yuka Kikuchi; Masahito Fukushima; Kengo Kawamura; Yosuke Kaguchi; Koichi Kodama; Mikio Yasutake
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,
Volume:57,
Number:5,
First page:605,
Last page:612, Mar. 2019
English, Scientific journal
DOI:https://doi.org/10.1002/pola.29299DOI ID:10.1002/pola.29299,
ISSN:0887-624X,
eISSN:1099-0518,
Web of Science ID:WOS:000456602400004 Discotic liquid crystals of transition metal complexes 56+: Synthesis of mesogenic phthalocyanine-fullerene dyads and influence of the substitution position of alkoxy chains and the kind of terminal groups on appearance of the helical supramolecular structure Kohei Ishikawa; Ayumi Watarai; Mikio Yasutake; Kazuchika Ohta
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:22,
Number:8,
First page:693,
Last page:715, Aug. 2018
English, Scientific journal
DOI:https://doi.org/10.1142/S108842461850092XDOI ID:10.1142/S108842461850092X,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000440658500009 Discotic liquid crystals of transition metal complexes, 55+: Novel chlorine-substituted phthalocyanine derivatives showing mesomorphism and low HOMO energy level Masashi Yatabe; Akio Kajitani; Mikio Yasutake; Kazuchika Ohta
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:22,
Number:1-3,
First page:32,
Last page:45, Jan. 2018
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424617500717DOI ID:10.1142/S1088424617500717,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000427932100005 Development of Liquid Crystal Materials Having an Anthraquinone and Bithiophene Moieties, and Their Electrochromic Properties Mikio Yasutake; Masahiro Takatsudo; Takuya Tamura; Kana Yamada; Tsubasa Kamiya; Takuji Hirose
ELECTROCHEMISTRY,
Volume:85,
Number:12,
First page:768,
Last page:774, Dec. 2017,
[Reviewed]Japanese, Scientific journal
DOI:https://doi.org/10.5796/electrochmistry.85.768DOI ID:10.5796/electrochmistry.85.768,
ISSN:1344-3542,
Web of Science ID:WOS:000418110300001 Phthalocyanine-based discotic liquid crystals switching from a molten alkyl chain type to a flying-seed-like type Hiromu Nakamura; Kouki Sugiyama; Kazuchika Ohta; Mikio Yasutake
JOURNAL OF MATERIALS CHEMISTRY C,
Volume:5,
Number:29,
First page:7297,
Last page:7306, Aug. 2017
English, Scientific journal
DOI:https://doi.org/10.1039/c7tc01197kDOI ID:10.1039/c7tc01197k,
ISSN:2050-7526,
eISSN:2050-7534,
Web of Science ID:WOS:000406376000020 Discotic liquid crystals of transition metal complexes, 53: synthesis and mesomorphism of phthalocyanines substituted by m-alkoxyphenylthio groups Yoshiaki Chino; Kazuchika Ohta; Mutsumi Kimura; Mikio Yasutake
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:21,
Number:3,
First page:159,
Last page:178, Mar. 2017
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424617500389DOI ID:10.1142/S1088424617500389,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000404984300001 Flying-seed-like liquid crystals 7(+): Synthesis and mesomorphism of novel octakis(m-chloropyridyloxy) phthalocyanato copper(II) complexes Kazuchika Ohta; Kaori Adachi; Mikio Yasutake
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:21,
Number:1,
First page:48,
Last page:58, Jan. 2017,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1142/S1088424617500043DOI ID:10.1142/S1088424617500043,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000396390700007 Discotic liquid crystals of transition metal complexes 52: Synthesis and homeotropic alignment of liquid crystalline phthalocyanine-fullerene dyad bridged by vanillin Ayumi Watarai; Kazuchika Ohta; Mikio Yasutake
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:20,
Number:12,
First page:1444,
Last page:1456, Dec. 2016,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1142/S1088424616501194DOI ID:10.1142/S1088424616501194,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000393046400005 Flying-seed-like mesogens 6: Synthesis and mesomorphism of phthalocyanine derivatives substituted by pentafluorosulfanylphenoxy group Ayumi Watarai; Kazuchika Ohta; Mikio Yasutake
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:20,
Number:7,
First page:822,
Last page:832, Jul. 2016
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424616501005DOI ID:10.1142/S1088424616501005,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000387058600008 A benign initiating system for cationic polymerization of isobutyl vinyl ether: Silver salt/aryl(alkyl) halide/lewis base Li Lin; Guangyou Zhang; Koichi Kodama; Mikio Yasutake; Takuji Hirose
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,
Volume:53,
Number:17,
First page:2050,
Last page:2058, Sep. 2015,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1002/pola.27656DOI ID:10.1002/pola.27656,
ISSN:0887-624X,
eISSN:1099-0518,
Web of Science ID:WOS:000358512900011 Trialkylsilylethynyl-substituted triphenylenes and hexabenzocoronenes: highly soluble liquid crystalline materials and their hole transport abilities Takuji Hirose; Yutaro Miyazaki; Mizuki Watabe; Sho Akimoto; Tatsuya Tachikawa; Koichi Kodama; Mikio Yasutake
TETRAHEDRON,
Volume:71,
Number:29,
First page:4714,
Last page:4721, Jul. 2015,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1016/j.tet.2015.05.071DOI ID:10.1016/j.tet.2015.05.071,
ISSN:0040-4020,
Web of Science ID:WOS:000357348100003 Flying-seed-like liquid crystals 5: Liquid crystals based on octakisphenylthiophthalocyanine and their optical properties Aya Ishikawa; Kazuchika Ohta; Mikio Yasutake
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:19,
Number:5,
First page:639,
Last page:650, May 2015
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424615500479DOI ID:10.1142/S1088424615500479,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000355750500001 Flying-seed-like liquid crystals. Part 4:dagger a novel series of bulky substituents inducing mesomorphism instead of using long alkyl chains Miho Yoshioka; Kazuchika Ohta; Mikio Yasutake
RSC ADVANCES,
Volume:5,
Number:18,
First page:13828,
Last page:13839, 2015,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1039/c4ra13474eDOI ID:10.1039/c4ra13474e,
ISSN:2046-2069,
Web of Science ID:WOS:000349434300071 Discotic liquid crystals of transition metal complexes 51†: Synthesis and mesomorphism of flat-pumpkin-shaped phthalocyanine-fullerene dyads Miho Yoshioka; Kazuchika Ohta; Yohei Miwa; Shoichi Kutsumizu; Mikio Yasutake
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:18,
Number:10-11,
First page:856,
Last page:868, Oct. 2014
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424614500643DOI ID:10.1142/S1088424614500643,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000346189500003 Effect of alkoxy terminal chain length on mesomorphism of 1,6-disubstituted pyrenebased hexacatenar liquid crystals: columnar phase control Takuji Hirose; Hiroaki Takai; Mizuki Watabe; Hiroyuki Minamikawa; Tatsuya Tachikawa; Koichi Kodama; Mikio Yasutake
TETRAHEDRON,
Volume:70,
Number:34,
First page:5100,
Last page:5108, Aug. 2014,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1016/j.tet.2014.05.111DOI ID:10.1016/j.tet.2014.05.111,
ISSN:0040-4020,
ORCID:40947776,
Web of Science ID:WOS:000339035200011 Synthesis of chiral dopants based on carbohydrates Toru Tsuruta; Tetsuo Koyama; Mikio Yasutake; Ken Hatano; Koji Matsuoka
CARBOHYDRATE RESEARCH,
Volume:393,
First page:15,
Last page:22, Jul. 2014,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1016/j.carres.2014.04.007DOI ID:10.1016/j.carres.2014.04.007,
ISSN:0008-6215,
eISSN:1873-426X,
ORCID:41456991,
Web of Science ID:WOS:000338714300003 Discotic liquid crystals of transition metal complexes 50†: spiranthes-like supramolecular structure of phthalocyanine-fullerene dyads Aya Ishikawa; Kenta Ono; Kazuchika Ohta; Mikio Yasutake; Musubu Ichikawa; Eiji Itoh
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:18,
Number:5,
First page:366,
Last page:379, May 2014
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424614500072DOI ID:10.1142/S1088424614500072,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000339010300003 Synthesis of cyclic carbonates from CO2 and epoxides catalyzed by low loadings of benzyl bromide/DMF at ambient pressure Lin Wang; Li Lin; Guangyou Zhang; Koichi Kodama; Mikio Yasutake; Takuji Hirose
CHEMICAL COMMUNICATIONS,
Volume:50,
Number:94,
First page:14813,
Last page:14816, 2014,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1039/c4cc06791fDOI ID:10.1039/c4cc06791f,
ISSN:1359-7345,
eISSN:1364-548X,
Web of Science ID:WOS:000344460300027 Discotic liquid crystals of transition metal complexes 49: establishment of helical structure of fullerene moieties in columnar mesophase of phthalocyanine-fullerene dyads Lisa Tauchi; Takahiro Nakagaki; Masahiro Shimizu; Eiji Itoh; Mikio Yasutake; Kazuchika Ohta
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES,
Volume:17,
Number:11,
First page:1080,
Last page:1093, Nov. 2013
English, Scientific journal
DOI:https://doi.org/10.1142/S1088424613500752DOI ID:10.1142/S1088424613500752,
ISSN:1088-4246,
eISSN:1099-1409,
Web of Science ID:WOS:000327741900004 Solvent-Induced Chirality Control in the Enantioseparation of 1-Phenylethylamine via Diastereomeric Salt Formation Koichi Kodama; Yuria Kimura; Hiroaki Shitara; Mikio Yasutake; Rumiko Sakurai; Takuji Hirose
CHIRALITY,
Volume:23,
Number:4,
First page:326,
Last page:332, Apr. 2011,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1002/chir.20922DOI ID:10.1002/chir.20922,
ISSN:0899-0042,
Web of Science ID:WOS:000288087700007 Synthesis and Hole Transport Properties of Highly Soluble Pyrene-Based Discotic Liquid Crystals with Trialkylsilylethynyl Groups Takuji Hirose; Yuki Shibano; Yutaro Miyazaki; Norihito Sogoshi; Seiichiro Nakabayashi; Mikio Yasutake
MOLECULAR CRYSTALS AND LIQUID CRYSTALS,
Volume:534,
First page:81,
Last page:92, 2011,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1080/15421406.2011.536485DOI ID:10.1080/15421406.2011.536485,
ISSN:1542-1406,
Web of Science ID:WOS:000286831300008 Liquid-Crystalline Behavior and Structure of Charge-Transfer Complexes of Pyrene Derivatives with Four Linear Alkanoyloxy Substituents Takuji Hirose; Takuya Yumoto; Kozue Matsumoto; Satomi Mitsushio; Osamu Kawakami; Mikio Yasutake
MOLECULAR CRYSTALS AND LIQUID CRYSTALS,
Volume:524,
First page:68,
Last page:101, 2010,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1080/15421406.2010.484613DOI ID:10.1080/15421406.2010.484613,
ISSN:1542-1406,
eISSN:1563-5287,
Web of Science ID:WOS:000279716300007 Synthesis of 3,3 '-(4H,4 ' H)-spirobi(2H-naphtho[1,2-b]pyran)-6,6 '-dicarboxylic Acid and Its Optical Resolution Kenta Tojo; Tatsuya Arisawa; Mikio Yasutake; Yoshio Aoki; Daiyo Terunuma
CHEMISTRY LETTERS,
Volume:37,
Number:9,
First page:930,
Last page:931, Sep. 2008,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1246/cl.2008.930DOI ID:10.1246/cl.2008.930,
ISSN:0366-7022,
eISSN:1348-0715,
Web of Science ID:WOS:000260051800016 A comparison of coordination ability of hetero atoms: A Li+ and Na+ selective pyridinophane-based cryptand Hiroyuki Takemura; Hiroyuki Nakamichi; Rika Nogita; Tetsuo Iwanaga; Mikio Yasutake; Teruo Shinmyozu
Tetrahedron Letters,
Volume:44,
Number:27,
First page:5087,
Last page:5089, Jun. 2003,
[Reviewed]Elsevier Ltd, English, Scientific journal
DOI:https://doi.org/10.1016/S0040-4039(03)01150-XDOI ID:10.1016/S0040-4039(03)01150-X,
ISSN:0040-4039,
SCOPUS ID:0037505191 Solid-state structural study of the charge-transfer complexes of 5,7,9-trimethyl- and 2,11,20-trithia[3(3)](1,3,5)cyclophanes
M Yasutake; K Araki; M Zhou; R Nogita; T Shinmyozu
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Number:7, First page:1343, Last page:1351, Apr. 2003, [Reviewed]
English, Scientific journal
ISSN:1434-193X, Web of Science ID:WOS:000182125100023
Crystal structure of methyl endo-8-cyano-exo-8-methyl-3-oxo-2-oxabicyclo[2.2.2]oct-5-ene-6-carboxylate
T Shimo; M Yasutake; T Shinmyozu; K Somekawa
ANALYTICAL SCIENCES, Volume:19, Number:3, First page:471, Last page:472, Mar. 2003, [Reviewed]
English, Scientific journal
ISSN:0910-6340, Web of Science ID:WOS:000181557800029
Structurally isomeric two pyridino macrocycles: Complexation and structures Hiroyuki Takemura; Noriyoshi Kon; Mikio Yasutake; Teruo Shinmyozu
Tetrahedron,
Volume:59,
Number:3,
First page:427,
Last page:431, Jan. 2003,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1016/S0040-4020(02)01457-6DOI ID:10.1016/S0040-4020(02)01457-6,
ISSN:0040-4020,
SCOPUS ID:0037434003 An alternative synthetic route of [35](1,2,3,4,5)cyclophane, and structural properties of multibridged [3n]cyclophanes and their charge-transfer complexes in the solid state Mikio Yasutake; Toru Koga; Youichi Sakamoto; Shingo Komatsu; Ming Zhou; Katsuya Sako; Hitoshi Tatemitsu; Satoru Onaka; Yoshio Aso; Shinobu Inoue; Teruo Shinmyozu
Journal of the American Chemical Society,
Volume:124,
Number:34,
First page:10136,
Last page:10145, Aug. 2002,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1021/ja012363kDOI ID:10.1021/ja012363k,
ISSN:0002-7863,
PubMed ID:12188678,
SCOPUS ID:0037190056 Crystal structure of 1 : 1 complex crystal between 4-(3-methoxybenzyloxy)6-methyl-2-pyrone and maleimide
T Shimo; H Yano; M Yasutake; T Shinmyozu; K Somekawa
ANALYTICAL SCIENCES, Volume:18, Number:8, First page:965, Last page:966, Aug. 2002, [Reviewed]
English, Scientific journal
ISSN:0910-6340, Web of Science ID:WOS:000177500200024
Crystal structures of 4-methoxy-6-methyl- and 4-hydroxy-6-methyl-2-pyrones
T Shimo; M Yasutake; T Shinmyozu; K Somekawa
ANALYTICAL SCIENCES, Volume:18, Number:5, First page:613, Last page:614, May 2002, [Reviewed]
English, Scientific journal
ISSN:0910-6340, Web of Science ID:WOS:000175643000022
A study of C-F center dot center dot M+ interaction: Metal complexes of fluorine-containing cage compounds
H Takemura; S Nakashima; N Kon; M Yasutake; T Shinmyozu; T Inazu
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Volume:123, Number:38, First page:9293, Last page:9298, Sep. 2001
English, Scientific journal
ISSN:0002-7863, Web of Science ID:WOS:000171169700011
Alternative general synthetic routes to [2.2]cyclophanes and [3,2]cyclophanes from [3.3]cyclophane-2,11-diones by photodecarbonylation, and a structural study of [3.2]metacyclophanes
H Isaji; M Yasutake; H Takemura; K Sako; H Tatemitsu; T Inazu; T Shinmyozu
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Number:13, First page:2487, Last page:2499, Jul. 2001, [Reviewed]
English, Scientific journal
ISSN:1434-193X, Web of Science ID:WOS:000169648100009
Synthesis, Electronic Spectra, and Crystal Structural Properties of Fluorinated [33](1,3,5)cyclophanes Toru Koga; Mikio Yasutake; Teruo Shinmyozu
Organic Letters,
Volume:3,
Number:10,
First page:1419,
Last page:1422, May 2001,
[Reviewed]English, Scientific journal
DOI:https://doi.org/10.1021/ol010003wDOI ID:10.1021/ol010003w,
ISSN:1523-7060,
SCOPUS ID:0001071763 A study of C-F center dot center dot center dot M+ interaction: Alkali metal complexes of the fluorine-containing cage compound
H Takemura; N Kon; M Kotoku; S Nakashima; K Otsuka; M Yasutake; T Shinmyozu; T Inazu
JOURNAL OF ORGANIC CHEMISTRY, Volume:66, Number:8, First page:2778, Last page:2783, Apr. 2001
English, Scientific journal
ISSN:0022-3263, Web of Science ID:WOS:000168258600033
Formation and structural features of novel cage compounds with a pentacyclo[6.4.0.0(3,7).0(4,11).0(5,10)]dodecane skeleton via photolysis of [3(3)](1,3,5)cyclophane
K Matohara; C Lim; M Yasutake; R Nogita; T Koga; Y Sakamoto; T Shinmyozu
TETRAHEDRON LETTERS, Volume:41, Number:35, First page:6803, Last page:6807, Aug. 2000, [Reviewed]
English, Scientific journal
ISSN:0040-4039, Web of Science ID:WOS:000089031200024
Formation of a novel cage compound with a Pentacyclo[6.3.0.1(4,11).0(2,6).0(5,10)]dodecane skeleton by photolysis of [3(4)](1,2,4,5)cyclophane
C Lim; M Yasutake; T Shinmyozu
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Volume:39, Number:3, First page:578, Last page:+, 2000, [Reviewed]
English, Scientific journal
ISSN:1433-7851, Web of Science ID:WOS:000085230900032
Photolysis of [3(4)](1,2,3,5)cyclophane: formation of a pentacyclo[6.3.1.1(6,10).0(3,7).0(4,10)]dodecane skeleton with abnormally elongated C-C single bonds
C Lim; M Yasutake; T Shinmyozu
TETRAHEDRON LETTERS, Volume:40, Number:37, First page:6781, Last page:6784, Sep. 1999, [Reviewed]
English, Scientific journal
ISSN:0040-4039, Web of Science ID:WOS:000082199900021
Multibridged [3(n)]cyclophanes, 7 Improved synthesis, structure, and cycloaddition reaction of [3(4)](1,2,4,5)cyclophane
W Sentou; T Satou; M Yasutake; C Lim; Y Sakamoto; T Itoh; T Shinmyozu
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Number:5, First page:1223, Last page:1231, May 1999, [Reviewed]
English, Scientific journal
ISSN:1434-193X, Web of Science ID:WOS:000080228100030
Synthesis of a new pyridinophane macrocycle with carbamate functionality via novel CO2 insertion reaction
D Noda; M Yasutake; H Takemura; T Shinmyozu
TETRAHEDRON LETTERS, Volume:40, Number:17, First page:3447, Last page:3450, Apr. 1999, [Reviewed]
English, Scientific journal
ISSN:0040-4039, Web of Science ID:WOS:000079737000043
PB18 Synthesis and Characterization of Discotic Liquid-Crystalline Compounds Having Trialkylsilyl Groups
Miyazaki Yutaro; Yasutake Mikio; Hirose Takuji
Number:2012, First page:"PB18, Last page:1"-"PB18-2", 20 Aug. 2012
Novel discotic liquid-crystalline materials were synthesized from triphenylene and hexabenzocoronene by attaching trialkylsilyl groups in the side chains. These compounds dissolved well in hexane, toluene, chloroform, diethyl ether and THF. DSC, POM and XRD measurements proved that triphenylene and hexabenzocoronene derivatives exhibit Col r and Col ho masophases respectively, over wide temperature ranges. Trialkylsilyl group was shown to be an effective flexible moiety of liquid-crystalline materials to improve solubility in organic solvents.
Japanese Liquid Crystal Society, Japanese
CiNii Articles ID:110009668916, CiNii Books ID:AA11639022
PA19 Synthesis and characterization of a pyrene derivative having thiophene moieties
Watabe Mizuki; Takai Hiroaki; Yasutake Mikio; Hirose Takuji
Number:2012, First page:"PA19, Last page:1"-"PA19-2", 20 Aug. 2012
In order to develop columnar discotic liquid-crystalline compounds with high charge transport ability, a pyrene derivative having a thiophene moiety in the side chains was synthesized and the physical and thermal properties were studied by POM, DSC, and XRD measurements. It was shown that an ordered hexagonal columnar (Col_) phase appears in the temperature range of more than 130 degrees showing the liquid crystalline phase is stable. The hole mobility determined by the time-of-flight (TOF) method was 4.8×10^<-3>cm^2V^<-1>s^<-1> in the Col_ phase at 140℃.
Japanese Liquid Crystal Society, Japanese
CiNii Articles ID:110009668866, CiNii Books ID:AA11639022
Solvent control of optical resolution of 2-amino-1-phenylethanol using dehydroabietic acid Kayoko Taniguchi; Marie Aruga; Mikio Yasutake; Takuji Hirose
ORGANIC & BIOMOLECULAR CHEMISTRY,
Volume:6,
Number:3,
First page:458,
Last page:463, Feb. 2008
English
DOI:https://doi.org/10.1039/b717071hDOI ID:10.1039/b717071h,
ISSN:1477-0520,
CiNii Articles ID:80019393378,
PubMed ID:18219414,
Web of Science ID:WOS:000253423400010 ピレン骨格を有する伝導性ディスコチック液晶化合物の合成
安武幹雄
Volume:第6号(平成19年度), 2008
Crystal Structures of (S)- and (R)-1-Amino-2-propanol/Dehydroabietic Acid Salts Hirose, T; Odagiri, E; Taniguchi, K; Yasutake, M
Volume:24,
First page:X9,
Last page:X10, 2008
DOI:https://doi.org/10.2116/analscix.24.x9DOI ID:10.2116/analscix.24.x9,
ISSN:1348-2238,
CiNii Articles ID:80019432432 ピレン骨格を有する伝導性ディスコチック液晶化合物の合成
安武幹雄
総合研究機構研究プロジェクト研究成果報告書, Volume:第6号(平成19年度), 2008
Crystal Structures of (S)- and (R)-1-Amino-2-propanol/Dehydroabietic Acid Salts Hirose, T; Odagiri, E; Taniguchi, K; Yasutake, M
Anal. Sci.,
Volume:24,
First page:X9,
Last page:X10, 2008
DOI:https://doi.org/10.2116/analscix.24.x9DOI ID:10.2116/analscix.24.x9,
ISSN:1348-2238,
CiNii Articles ID:80019432432 Synthesis and phase structures of novel pi-acceptor discotic liquid crystalline compounds having a pyrenedione core Mikio Yasutake; Takashi Fujihara; Akira Nagasawa; Keiichi Moriya; Takuji Hirose
European Journal of Organic Chemistry,
Volume:2008,
Number:24,
First page:4120,
Last page:4125, 2008
DOI:https://doi.org/10.1002/ejoc.200800360DOI ID:10.1002/ejoc.200800360,
ISSN:1434-193X,
CiNii Articles ID:80019737426 Resolution of alpha-methylbenzylamine via diastereomeric salt formation using the naturally based reagent N-tosyl-(S)-phenylalanine together with a solvent switch technique Takuji Hirose; Muksana Begum; Md Sadequl Islam; Kayoko Taniguchi; Mikio Yasutake
Tetrahedron-Asymmetry,
Volume:19,
Number:14,
First page:1641,
Last page:1646, 2008
DOI:https://doi.org/10.1016/j.tetasy.2008.06.035DOI ID:10.1016/j.tetasy.2008.06.035,
ISSN:0957-4166,
CiNii Articles ID:80019725383 Synthesis of novel chiral 1,3-aminophenols and application for the enantioselective addition of diethylzinc to aldehydes Xiao-Feng Yang; Zhao-Hui Wang; Tomoaki Koshizawa; Mikio Yasutake; Guang-You Zhang; Takuji Hirose
TETRAHEDRON-ASYMMETRY,
Volume:18,
Number:10,
First page:1257,
Last page:1263, Jun. 2007
English
DOI:https://doi.org/10.1016/j.tetasy.2007.05.027DOI ID:10.1016/j.tetasy.2007.05.027,
ISSN:0957-4166,
CiNii Articles ID:80018352678,
Web of Science ID:WOS:000248103800018 Dehydroabietic acid esters as chiral dopants for nematic liquid crystals Hiroaki Shitara; Marie Aruga; Erni Odagiri; Kayoko Taniguchi; Mikio Yasutake; Takuji Hirose
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN,
Volume:80,
Number:3,
First page:589,
Last page:593, Mar. 2007
English
DOI:https://doi.org/10.1246/bcsj.80.589DOI ID:10.1246/bcsj.80.589,
ISSN:0009-2673,
eISSN:1348-0634,
CiNii Articles ID:10018877486,
Web of Science ID:WOS:000245885000025 Gas-phase-assisted surface polymerization of methyl methacrylate with Fe(0)/TsCl initiator system Yoshito Andou; Mikio Yasutake; Jae-Mun Jeong; Masao Kaneko; Haruo Nishida; Takeshi Endo
JOURNAL OF APPLIED POLYMER SCIENCE,
Volume:103,
Number:3,
First page:1879,
Last page:1886, Feb. 2007
English
DOI:https://doi.org/10.1002/app.25270DOI ID:10.1002/app.25270,
ISSN:0021-8995,
eISSN:1097-4628,
CiNii Articles ID:80017903740,
Web of Science ID:WOS:000243013800062 PET(Proton Electron Transfar)が可能な液晶性化合物及び分子デバイスの合成と挙動
安武幹雄
Volume:第5号(18年度), First page:549, Last page:550, 2007
Designed surface modification by photo-induced vapor phase assisted surface polymerization of vinyl monomers Yoshito Andou; Mikio Yasutake; Haruo Nishida; Takeshi Endo
JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY,
Volume:20,
Number:4,
First page:523,
Last page:528, 2007
English
DOI:https://doi.org/10.2494/photopolymer.20.523DOI ID:10.2494/photopolymer.20.523,
ISSN:0914-9244,
CiNii Articles ID:40015602522,
Web of Science ID:WOS:000247885900007 PET(Proton Electron Transfar)が可能な液晶性化合物及び分子デバイスの合成と挙動
安武幹雄
総合研究機構研究プロジェクト研究成果報告書, Volume:第5号(18年度), First page:549, Last page:550, 2007
Designed surface modification by photo-induced vapor phase assisted surface polymerization of vinyl monomers Yoshito Andou; Mikio Yasutake; Haruo Nishida; Takeshi Endo
JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY,
Volume:20,
Number:4,
First page:523,
Last page:528, 2007
English
DOI:https://doi.org/10.2494/photopolymer.20.523DOI ID:10.2494/photopolymer.20.523,
ISSN:0914-9244,
CiNii Articles ID:40015602522,
Web of Science ID:WOS:000247885900007 Optical rotation study on solvent dependence of diastereomeric salt discrimination properties Kayoko Taniguchi; Rumiko Sakurai; Kenichi Sakai; Mikio Yasutake; Takuji Hirose
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN,
Volume:79,
Number:7,
First page:1084,
Last page:1090, Jul. 2006
English
DOI:https://doi.org/10.1246/bcsj.79.1084DOI ID:10.1246/bcsj.79.1084,
ISSN:0009-2673,
eISSN:1348-0634,
CiNii Articles ID:80019113098,
Web of Science ID:WOS:000240078400013 Synthesis of optically active 4,4,4-trifluoro-3-{4-(4-methoxyphenyl)phenyl}butanoic acid and its application to chiral dopant for nematic liquid crystals Kenta Tojo; Yoshio Aoki; Mikio Yasutake; Takuji Hirose
JOURNAL OF FLUORINE CHEMISTRY,
Volume:127,
Number:4-5,
First page:620,
Last page:626, May 2006
English
DOI:https://doi.org/10.1016/j.jfluchem.2005.11.005DOI ID:10.1016/j.jfluchem.2005.11.005,
ISSN:0022-1139,
Web of Science ID:WOS:000237986300024 電荷移動能をコアに有する液晶性化合物及び分子デバイスの合成と挙動
安武幹雄
Volume:第4号(17年度), 2006
Crystal structure of (S)-piperazine-2-carboxylic acid t-butylamide/N-Tosyl-(S)-phenylalanine 1:2 salt Kayoko Taniguchi; Mikio Yasutake; Takuji Hirose
Analytical Sciences: X-ray Structure Analysis Online,
Volume:22,
Number:3,
First page:x29,
Last page:x30, 2006
Japan Society for Analytical Chemistry, English, Report scientific journal
DOI:https://doi.org/10.2116/analscix.22.x29DOI ID:10.2116/analscix.22.x29,
ISSN:1348-2238,
CiNii Articles ID:80018193854,
SCOPUS ID:70450267741 電荷移動能をコアに有する液晶性化合物及び分子デバイスの合成と挙動
安武幹雄
総合研究機構研究プロジェクト研究成果報告書, Volume:第4号(17年度), 2006
Induction and control of columnar mesophase by charge transfer interaction and side chain structures of tetrasubstituted pyrenes T Hirose; O Kawakami; M Yasutake
MOLECULAR CRYSTALS AND LIQUID CRYSTALS,
Volume:451,
First page:65,
Last page:74, 2006
English
DOI:https://doi.org/10.1080/154214090960081DOI ID:10.1080/154214090960081,
ISSN:1542-1406,
Web of Science ID:WOS:000237383700006 Cyclophanes within cyclophanes: The synthesis of a pyromellitic diimide-based macrocycle as a structural unit in a molecular tube and its inclusion phenomena Tetsuo Iwanaga; Ryoma Nakamoto; Mikio Yasutake; Hiroyuki Takemura; Katsuya Sako; Teruo Shinmyozu
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,
Volume:45,
Number:22,
First page:3643,
Last page:3647, 2006
English
DOI:https://doi.org/10.1002/anie.200504499DOI ID:10.1002/anie.200504499,
ISSN:1433-7851,
CiNii Articles ID:80019070751,
Web of Science ID:WOS:000238068000015 Crystal Structure of (S)-Piperazine-2-carboxylic acid t-butylamide/N-Tosyl-(S)-phenylalanine 1:2 Salt K. Taniguchi; M. Yasutake; T. Hirose
Anal. Sci.,
Volume:22,
First page:X29,
Last page:X30, 2006
DOI:https://doi.org/10.2116/analscix.22.x29DOI ID:10.2116/analscix.22.x29,
ISSN:1348-2238,
CiNii Articles ID:80018193854 Gas-phase assisted surface polymerization of vinyl monomers with Fe-based initiating systems Y Andou; M Yasutake; JM Jeong; H Nishida; T Endo
MACROMOLECULAR CHEMISTRY AND PHYSICS,
Volume:206,
Number:17,
First page:1778,
Last page:1783, Sep. 2005
English
DOI:https://doi.org/10.1002/macp.200500151DOI ID:10.1002/macp.200500151,
ISSN:1022-1352,
CiNii Articles ID:80017577685,
Web of Science ID:WOS:000231996600009 Synthesis and characterization of novel Cu(II)-bipyridine complexes having functional groups and their application toward molecular recognition T Kojima; H Kitaguchi; Y Tachi; M Yasutake; Y Naruta; Y Matsuda
INORGANICA CHIMICA ACTA,
Volume:358,
Number:13,
First page:3592,
Last page:3600, Sep. 2005
English
DOI:https://doi.org/10.1016/j.ica.2005.06.007DOI ID:10.1016/j.ica.2005.06.007,
ISSN:0020-1693,
CiNii Articles ID:80017575426,
Web of Science ID:WOS:000232384400006 Crystal structure of 3,4-dihydro-2H-1,5-benzodioxepine-7,8-dicarboxylic acid Mikio Yasutake; Seitaro Yamaguchi; Takuji Hirose
Analytical Sciences: X-ray Structure Analysis Online,
Volume:21,
Number:5,
First page:x81,
Last page:x82, 2005
Japan Society for Analytical Chemistry, English, Report scientific journal
DOI:https://doi.org/10.2116/analscix.21.x81DOI ID:10.2116/analscix.21.x81,
ISSN:1348-2238,
SCOPUS ID:53749103163 Crystal structure of 3,4-dihydro-2H-1,5-benzodioxepine-7,8-dicarboxylic acid. M. Yasutake; S. Yamaguchi; T. Hirose
X-Ray Structure Analysis Online,
Volume:21,
First page:X81,
Last page:X82, 2005
DOI:https://doi.org/10.2116/analscix.21.x81DOI ID:10.2116/analscix.21.x81,
ISSN:1348-2238 The Ar-Cl center dot center dot center dot HO hydrogen bond of 6-chloro-9-hydroxy-[3.3]metacyclophane
H Takemura; M Kotoku; M Yasutake; T Shinmyozu
JOURNAL OF CHEMICAL RESEARCH-S, Volume:12, Number:12, First page:834, Last page:835, Dec. 2004
English
ISSN:0308-2342, Web of Science ID:WOS:000227101700017
The Ar-Cl center dot center dot center dot HO hydrogen bond of 6-chloro-9-hydroxy-[3.3]metacyclophane
H Takemura; M Kotoku; M Yasutake; T Shinmyozu
JOURNAL OF CHEMICAL RESEARCH-S, Volume:12, Number:12, First page:834, Last page:835, Dec. 2004
English
ISSN:0308-2342, Web of Science ID:WOS:000227101700017
Photochemical sudy of [3(3)](1,3,5)cyclophane and emission spectral poperties of [3(n)]cyclophanes (n=2-6) R Nogita; K Matohara; M Yamaji; T Oda; Y Sakamoto; T Kumagai; C Lim; M Yasutake; T Shimo; CW Jefford; T Shinmyozu
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,
Volume:126,
Number:42,
First page:13732,
Last page:13741, Oct. 2004
English
DOI:https://doi.org/10.1021/ja030032xDOI ID:10.1021/ja030032x,
ISSN:0002-7863,
CiNii Articles ID:80017017541,
PubMed ID:15493932,
Web of Science ID:WOS:000224685200051 Physically controlled, free-radical polymerization of vaporized fluoromonomer on solid surfaces M Yasutake; Y Andou; S Hiki; H Nishida; T Endo
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,
Volume:42,
Number:11,
First page:2621,
Last page:2630, Jun. 2004
English
DOI:https://doi.org/10.1002/pola.20129DOI ID:10.1002/pola.20129,
ISSN:0887-624X,
CiNii Articles ID:80016672945,
Web of Science ID:WOS:000221527300005 9-fluoro-18-hydroxy-[3.3]metacyclophane: Synthesis and estimation of a C-(FH)-H-...-O hydrogen bond H Takemura; M Kotoku; M Yasutake; T Shinmyozu
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY,
Number:9,
First page:2019,
Last page:2024, Apr. 2004
English
DOI:https://doi.org/10.1002/ejoc.200300698DOI ID:10.1002/ejoc.200300698,
ISSN:1434-193X,
CiNii Articles ID:80017044220,
Web of Science ID:WOS:000221286100020 Controlled radical polymerization of vaporized vinyl monomers on solid surfaces under UV irradiation M Yasutake; Y Andou; S Hiki; H Nishida; T Endo
MACROMOLECULAR CHEMISTRY AND PHYSICS,
Volume:205,
Number:4,
First page:492,
Last page:499, Mar. 2004
English
DOI:https://doi.org/10.1002/macp.200300089DOI ID:10.1002/macp.200300089,
ISSN:1022-1352,
CiNii Articles ID:80016533689,
Web of Science ID:WOS:000220209300010 Physically controlled radical polymerization of vaporized vinyl monomers on surfaces. Synthesis of block copolymers of methyl methacrylate and styrene with a conventional free radical initiator M Yasutake; S Hiki; Y Andou; H Nishida; T Endo
MACROMOLECULES,
Volume:36,
Number:16,
First page:5974,
Last page:5981, Aug. 2003
English
DOI:https://doi.org/10.1021/ma021795sDOI ID:10.1021/ma021795s,
ISSN:0024-9297,
Web of Science ID:WOS:000184628000016 Crystal structure of 4,13-dimethyl-3,7,10,14,19,22,25-heptaoxapentacyclo[25.0.0(1,6).0(6,26)0(11,16).0(11,18)]heptacosa-4,11-diene-2,15-dione T Shimo; K Uchiyama; M Yasutake; T Shinmyozu; K Somekawa
ANALYTICAL SCIENCES,
Volume:17,
Number:8,
First page:1017,
Last page:1018, Aug. 2001
English
DOI:https://doi.org/10.2116/analsci.17.1017DOI ID:10.2116/analsci.17.1017,
ISSN:0910-6340,
Web of Science ID:WOS:000170499900021 A potassium complex of a fluorine-containing macrocyclic cage compound: Interactions between fluorine atoms and metal ions H Takemura; N Kon; M Yasutake; H Kariyazono; T Shinmyozu; T Inazu
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,
Volume:38,
Number:7,
First page:959,
Last page:961, 1999
English
DOI:https://doi.org/10.1002/(SICI)1521-3773(19990401)38:7<959::AID-ANIE959>3.0.CO;2-8DOI ID:10.1002/(SICI)1521-3773(19990401)38:7<959::AID-ANIE959>3.0.CO;2-8,
ISSN:1433-7851,
CiNii Articles ID:80011079192,
Web of Science ID:WOS:000079641000019
Synthesis of D-A liquid crystalline electrochromic compounds and development of their electrochromic devices
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 01 Apr. 2017 - 31 Mar. 2020
Yasutake Mikio, Saitama University
Grant amount(Total):4810000, Direct funding:3700000, Indirect funding:1110000
We were designed four kinds of liquid crystal materials having pyrendithione and bithiophene moieties and synthesized. And their liquid crystalline properties were also investigated. Furthermore, we investigated the electrochromic properties of PQBTs in the solutions. After, the electrochromic devices using PQBTs were formed, and this was also examined. In particular, the electrochemical properties of PQBTs in solution were better than those previously reported and showed electrochromic properties over a wide range of potentials. In addition, the PQBTs devices showed electrochromic characteristics of three colors. In addition, we also investigated the switching speeds of these and examined their repeatability.
Grant number:17K05826
The preparation and behavior of liquid crystal molecules which appear electrochromism by electrochemical oxidation and reduction.
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (B), 2011 - 2013
YASUTAKE Mikio, Saitama University
Grant amount(Total):4420000, Direct funding:3400000, Indirect funding:1020000
Two kinds of liquid crystal compound having an anthraquinone and bithiophene moieties were synthesized. The mesophases exhibited, have been characterized by means of polarized optical microscopy observation (POM), differential scanning calorimetry (DSC), X-ray diffraction (XRD) studies. The observation results, those phase was lamellar phase. Furthermore, those electrochemic properties were examined by cyclic voltammetry (CV). And the electrochromism of the liquid crystal compounds was also examined by UV-vis spectra.Moreover, the electrochromic devices were made and the color property in the electrochemistry was observed.
Finally mixture of an ionic liquid crystal and an electrochromics material was prepared, and it was examined. However, they caused phase separation.
Grant number:23750207
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Competitive research funding
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Competitive research funding