Jiro Kumaki

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Name
Jiro Kumaki

Research Areas

 
 

Published Papers

 
Shimanuki Chisato, Matsuta Yuuma, Fujita Ryo, Kumaki Jiro
ACS OMEGA   3(4) 3983-3990   Apr 2018   [Refereed]
Yuki Ono, Jiro Kumaki
Macromolecules      Jan 2018
© 2018 American Chemical Society. The crystallization process of a folded-chain crystal (FCC), the most common crystalline structure of polymer chains, was clearly visualized at the molecular level in situ and in real time for the first time. The ...
熊木治郎
高分子   66(10) 567‐571   Oct 2017
熊木 治郎
高分子 = High polymers, Japan : polymers   66(10) 567-571   Oct 2017
Watanabe Atsushi, Kumaki Jiro
JOURNAL OF COLLOID AND INTERFACE SCIENCE   486 316-324   Jan 2017   [Refereed]
Kumaki Jiro
POLYMER JOURNAL   48(1) 3-14   Jan 2016   [Refereed]
Anzai Takahiro, Kawauchi Mariko, Kawauchi Takehiro, Kumaki Jiro
JOURNAL OF PHYSICAL CHEMISTRY B   119(1) 338-347   Jan 2015   [Refereed]
Wang Yue, Sakamoto Takeshi, Koyama Yasuhito, Takanashi Yuma, Kumaki Jiro, Cui Jiaxi, Wan Xinhua, Nakano Tamaki
POLYMER CHEMISTRY   5(3) 718-721   Feb 2014   [Refereed]
熊木治郎
高分子   62(12) 751-752   Dec 2013
Sato Go, Nishitsuji Shotaro, Kumaki Jiro
JOURNAL OF PHYSICAL CHEMISTRY B   117(30) 9067-9072   Aug 2013   [Refereed]
Saito Yuta, Le Thi Ngoc Lien, Jinbo Yuji, Kumaki Jiro, Narumi Atsushi, Kawaguchi Seigou
POLYMER JOURNAL   45(2) 193-201   Feb 2013   [Refereed]
Sugihara Kouki, Kumaki Jiro
JOURNAL OF PHYSICAL CHEMISTRY B   116(22) 6561-6568   Jun 2012   [Refereed]
熊木治郎
ネットワークポリマー   33(1) 42-49   Jan 2012
Ohsawa Sousuke, Sakurai Shin-ichiro, Nagai Kanji, Maeda Katsuhiro, Kumaki Jiro, Yashima Eiji
POLYMER JOURNAL   44(1) 42-50   Jan 2012   [Refereed]
Ohsawa Sousuke, Sakurai Shin-ichiro, Nagai Kanji, Banno Motonori, Maeda Katsuhiro, Kumaki Jiro, Yashima Eiji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   133(1) 108-114   Jan 2011   [Refereed]
Sasaki Yuhtaro, Aiba Naoyuki, Hashimoto Hiroshi, Kumaki Jiro
MACROMOLECULES   43(21) 9077-9086   Nov 2010   [Refereed]
Kawauchi Takehiro, Kitaura Atsushi, Kawauchi Mariko, Takeichi Tsutomu, Kumaki Jiro, Iida Hiroki, Yashima Eiji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   132(35) 12191-12193   Sep 2010   [Refereed]
Kumaki Jiro, Kajitani Takashi, Nagai Kanji, Okoshi Kento, Yashima Eiji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   132(16) 5604-+   Apr 2010   [Refereed]
Inclusion complex formation of the helical syndiotactic PMMA and fullerenes
Kawauchi Takehiro, Kitaura Atsushi, Kumaki Jiro, Yashima Eiji
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   239    Mar 2010   [Refereed]
Selective extraction of higher fullerenes using syndiotactic PMMA
Kitaura Atsushi, Kawauchi Takehiro, Kawauchi Mariko, Takeichi Tsutomu, Kumaki Jiro, Iida Hiroki, Yashima Eiji
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   239    Mar 2010   [Refereed]
Kumaki Jiro, Sakurai Shin-ichiro, Yashima Eiji
CHEMICAL SOCIETY REVIEWS   38(3) 737-746   2009   [Refereed]
熊木治郎
高分子   57(12) 993-998   Dec 2008
Atomic force microscopy is a powerful tool to study materials in a molecular level. However, observations of soft polymeric materials in a high resolution are still challenging. We review recent achievements in observations of polymer chains at a ...
Kawauchi Takehiro, Kitaura Atsushi, Kumaki Jiro, Kusanagi Hiroshi, Yashima Eiji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   130(36) 11889-11891   Sep 2008   [Refereed]
Maeda Takeshi, Furusho Yoshio, Sakurai Shin-Ichiro, Kumaki Jiro, Okoshi Kento, Yashima Eiji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   130(25) 7938-7945   Jun 2008   [Refereed]
Kumaki Jiro, Kawauchi Takehiro, Ute Koichi, Kitayama Tatsuki, Yashima Eiji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   130(20) 6373-6380   May 2008   [Refereed]
Kumaki Jiro, Kawauchi Takehiro, Yashima Eiji
MACROMOLECULAR RAPID COMMUNICATIONS   29(5) 406-411   Mar 2008   [Refereed]
Onouchi Hisanari, Okoshi Kento, Kajitani Takashi, Sakurai Shin-ichiro, Nagai Kanji, Kumaki Jiro, Onitsuka Kiyotaka, Yashima Eiji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   130(1) 229-236   Jan 2008   [Refereed]
Kawauchi Takehiro, Kumaki Jiro, Kitaura Atsushi, Okoshi Kento, Kusanagi Hiroshi, Kobayashi Keita, Sugai Toshiki, Shinohara Hisanori, Yashima Eiji
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   47(3) 515-519   2008   [Refereed]
Zhang Wei, Shiotsuki Masashi, Masuda Toshio, Kumaki Jiro, Yashima Eiji
MACROMOLECULES   40(2) 178-185   Jan 2007   [Refereed]
Sakurai Shin-ichiro, Ohsawa Sousuke, Nagai Kanji, Okoshi Kento, Kumaki Jiro, Yashima Eiji
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   46(40) 7605-7608   2007   [Refereed]
Kumaki Jiro, Kawauchi Takehiro, Okoshi Kento, Kusanagi Hiroshi, Yashima Eiji
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   46(28) 5348-5351   2007   [Refereed]
Kento Okoshi, Shin Ichiro Sakurai, Sousuke Ohsawa, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Angewandte Chemie - International Edition   45 8173-8176   Dec 2006
(Chemical Equation Presented) A hard twist: A helical poly(phenylacetylene) with L- or D-alanine pendants with a long alkyl chain showed an unprecedented change in the main-chain stiffness accompanied by inversion of the helical sense of the polym...
POLY 27-"Reptational" movements of isotactic poly(methyl methacrylate) chains on mica observed by in situ atomic force microscopy
Kumaki Jiro, Kawauchi Takehiro, Yashima Eiji
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   232    Sep 2006   [Refereed]
POLY 107-Chiral 2D crystals of one-handed helical polyacetylenes on solid surfaces
Sakurai Shin-ichiro, Okoshi Kento, Kumaki Jiro, Yashima Eiji
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   232    Sep 2006   [Refereed]
Kawauchi Takehiro, Kumaki Jiro, Yashima Eiji
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   128(32) 10560-10567   Aug 2006   [Refereed]
Sakurai S, Okoshi K, Kumaki J, Yashima E
Journal of the American Chemical Society   128(17) 5650-5651   May 2006   [Refereed]
Jiro Kumaki, Takehiro Kawauchi, Eiji Yashima, Eiji Yashima
Macromolecules   39 1209-1215   Feb 2006
Vital "reptational" movements of isolated synthetic polymer chains on a substrate were imaged by atomic force microscopy (AFM) in the tapping mode. The isotactic poly(methyl methacrylate) molecules deposited on mica have long flexible chains that ...
Sakurai S, Okoshi K, Kumaki J, Yashima E
Angewandte Chemie (International ed. in English)   45(8) 1245-1248   Feb 2006   [Refereed]
Kajitani T, Okoshi K, Sakurai S, Kumaki J, Yashima E
Journal of the American Chemical Society   128(3) 708-709   Jan 2006   [Refereed]
Matile Stefan, Sakai Naomi, Mareda Jiri, Kumaki Jiro, Yashima Eiji
JOURNAL OF RECEPTORS AND SIGNAL TRANSDUCTION   26(5-6) 461-472   2006   [Refereed]
Takehiro Kawauchi, Jiro Kumaki, Kento Okoshi, Eiji Yashima
Macromolecules   38 9155-9160   Nov 2005
We found that stereoregular isotactic poly(methyl methacrylate) (it-PMMA) (mm = 97%) and syndiotactic poly(methyl methacrylate) (st-PMMA) (rr = 90%) with a narrow molecular weight distribution form a stereocomplex in ionic liquids such as 1-butyl-...
Kumaki J, Yashima E, Bollot G, Mareda J, Litvinchuk S, Matile S
Angewandte Chemie (International ed. in English)   44(38) 6154-6157   Sep 2005   [Refereed]
Kawauchi T, Kumaki J, Yashima E
Journal of the American Chemical Society   127(28) 9950-9951   Jul 2005   [Refereed]
Nishinaka T, Takano A, Doi Y, Hashimoto M, Nakamura A, Matsushita Y, Kumaki J, Yashima E
Journal of the American Chemical Society   127(22) 8120-8125   Jun 2005   [Refereed]
Kento Okoshi, Koichi Sakajiri, Jiro Kumaki, Eiji Yashima
Macromolecules   38 4061-4064   May 2005
The synthesis of stereo-regular (cis-transoidal) poly(phenylacetylene)s bearing L-, D-, or racemic DL-alanine residues with a long alkyl chains as pendants (poly-L-1, poly-D-1, and poly-DL-1) was investigated. The polyacetylene was found to form w...
Kumaki J, Kawauchi T, Yashima E
Journal of the American Chemical Society   127(16) 5788-5789   Apr 2005   [Refereed]
Nishinaka T., Hashimoto M., Nakamura A., Kumaki J., Yashima E.
Seibutsu Butsuri   44(0)    2004
Kumaki J, Hashimoto T
Journal of the American Chemical Society   125(16) 4907-4917   Apr 2003   [Refereed]
熊木治郎
Mol Electron Bioelectron   10(4) 249-252   Oct 1999
J. Kumaki, T. Hashimoto
Journal of the American Chemical Society   120 423-424   Jan 1998
熊木治郎, 橋本竹治
高分子   46(4) 246-248   Apr 1997
J. Kumaki, Y. Nishikawa, T. Hashimoto
Journal of the American Chemical Society   118 3321-3322   Apr 1996
The conformational characteristics of linear macromolecules are one of the most important physical factors for an interpretation and understanding of their properties. It would be extremely stimulating for new insights into polymer behavior if we ...
Jiro Kumaki, Takeji Hashimoto, Takeji Hashimoto, Steve Granick
Physical Review Letters   77 1990-1993   Jan 1996
Phase separation occurred up to 20°C above the coexistence temperature in a polymer solution (polystyrene-polybutadiene-dioctylphthalate) to which small temperature gradients≈2°C were applied. Before convection began, spinodal-like patterns with c...
Jiro Kumaki, Jiro Kumaki
Journal of Polymer Science Part B: Polymer Physics   28 105-111   Jan 1990
Monomolecular particles of polystyrene (Mw/Mn= 1.04, Mw= 3.84 ? 106) formed by spreading of a dilute solution in benzene over a water surface were successfully accumulated onto a hydrophobic substrate by the horizontal lifting method. The accumula...
Jiro Kumaki
Macromolecules   21 749-755   Jan 1988
The behavior of a monolayer of polystyrene monomolecular particles which was obtained by spreading dilute solutions in benzene on the water surface was studied by a Langmuir-type film balance and transmission electron microscopy (TEM). Since polys...
熊木治郎
機能材料   7(1) 23-31   Jan 1987
Jiro Kumaki
Macromolecules   19 2258-2263   Jan 1986
Ultrafine particles, each containing a single polystyrene molecule (monomolecular particles), were obtained by spreading very dilute (about 2 × 10–6g/mL) solutions of polystyrene in benzene drop-by-drop onto a water surface. The molecular weights ...
Jiro Kumaki, Takeji Hashimoto
Macromolecules   19 763-768   Jan 1986
The kinetics of phase separation and phase dissolution for a polymer mixture (polystyrene and poly(vinyl methyl ether)) in the liquid state was studied by a time-resolved light scattering technique. The mixture, which has a LCST, was first demixed...
Takeji Hashimoto, Jiro Kumaki, Hiromichi Kawai
Macromolecules   16 641-648   Jan 1983
The dynamics of liquid-liquid phase separation of a polymer blend of polystyrene and poly(vinyl methyl ether) was studied by time-resolved elastic light scattering techniques in both the nucleation-growth (NG) and spinodal-decomposition (SD) regim...

Misc

 
熊木治郎
月刊新素材   5(2) 77-81   Feb 1994
熊木治郎, 桑田浄伸
プラスチックス   41(12) 104-110   Dec 1990

Conference Activities & Talks

 
小野裕貴, 熊木治郎
高分子学会予稿集(CD-ROM)   8 May 2018   
笹原友希, 三宅優弥, 熊木治郎
高分子学会予稿集(CD-ROM)   8 May 2018   
熊木治郎
東北地区高分子若手研究会夏季ゼミナール予稿集   2018   
小野裕貴, 熊木治郎
高分子学会予稿集(CD-ROM)   6 Sep 2017   
田中孝乃輔, 中沢樹史, 鳴海敦, 熊木治郎
高分子学会予稿集(CD-ROM)   6 Sep 2017   
渡邉康宏, 熊木治郎
高分子学会予稿集(CD-ROM)   15 May 2017   
島貫千慧, 松田侑真, 熊木治郎
高分子学会予稿集(CD-ROM)   15 May 2017   
渡邉康宏, 一戸捷人, 熊木治郎
高分子学会予稿集(CD-ROM)   24 Aug 2016   
岩島健太, 石原智美, 手塚育志, 山本拓矢, 山本拓矢, 熊木治郎
高分子学会予稿集(CD-ROM)   24 Aug 2016   
大友政明, 熊木治郎
高分子学会予稿集(CD-ROM)   24 Aug 2016   
大友政明, 熊木治郎
高分子学会予稿集(CD-ROM)   10 May 2016   
岩島健太, 石原智美, 手塚育志, 山本拓矢, 山本拓矢, 熊木治郎
高分子学会予稿集(CD-ROM)   10 May 2016   
渡邊篤, 熊木治郎
高分子学会予稿集(CD-ROM)   25 Aug 2015   
影山諒, 熊木治郎
高分子学会予稿集(CD-ROM)   12 May 2015   
渡邊篤, 熊木治郎
高分子学会予稿集(CD-ROM)   12 May 2015   
熊木治郎
高分子学会北陸支部研究発表講演会講演要旨集   22 Nov 2014   
一戸捷人, 西辻祥太郎, 熊木治郎
高分子分析討論会講演要旨集   16 Oct 2014   
田中紀子, 早坂啓, 渡邉良太, 生熊龍介, 熊木治郎
高分子学会予稿集(CD-ROM)   3 Sep 2014   
伊藤幸貴, 大野沙耶香, 遊佐真一, 熊木治郎
高分子学会予稿集(CD-ROM)   3 Sep 2014   
本間史樹, 熊木治郎
高分子学会予稿集(CD-ROM)   3 Sep 2014   
WANG Yue, 小山靖人, 熊木治郎, WAN Xinhua, 中野環
高分子学会予稿集(CD-ROM)   9 May 2014   
熊木治郎
高分子学会予稿集(CD-ROM)   9 May 2014   
藤田良, 熊木治郎
高分子学会予稿集(CD-ROM)   9 May 2014   
熊木治郎
レオロジー討論会講演要旨集   25 Sep 2013   
伊藤幸貴, 柴田恒一郎, 熊木治郎
高分子学会予稿集(CD-ROM)   28 Aug 2013   
齋藤雄行, 熊木治郎
高分子学会予稿集(CD-ROM)   28 Aug 2013   
安斎貴寛, 河内麻理子, 河内岳大, 熊木治郎
高分子学会予稿集(CD-ROM)   28 Aug 2013   
澤木大輝, 高野敦志, 松下裕秀, 熊木治郎
高分子学会予稿集(CD-ROM)   28 Aug 2013   
藤田良, 古舘謙志郎, 西辻祥太郎, 熊木治郎
高分子学会予稿集(CD-ROM)   14 May 2013   
安斎貴寛, 河内麻理子, 河内岳大, 西辻祥太郎, 熊木治郎
高分子学会予稿集(CD-ROM)   14 May 2013   
本間史樹, 西辻祥太郎, 熊木治郎
高分子学会予稿集(CD-ROM)   14 May 2013   
安斎貴寛, 河内麻理子, 河内岳大, 西辻祥太郎, 熊木治郎
高分子学会予稿集(CD-ROM)   5 Sep 2012   
藤田良, 西辻祥太郎, 熊木治郎
高分子学会予稿集(CD-ROM)   5 Sep 2012   
渡邉良太, 熊木治郎
高分子学会予稿集(CD-ROM)   5 Sep 2012   
澤木大輝, 高野敦志, 松下裕秀, 熊木治郎
高分子学会予稿集(CD-ROM)   5 Sep 2012   
安斎貴寛, 河内麻理子, 河内岳大, 熊木治郎
高分子学会予稿集(CD-ROM)   15 May 2012   
橋本紘志, 杉原孝樹, 熊木治郎
高分子学会予稿集(CD-ROM)   15 May 2012   
齋藤悠太, 神保雄次, 鳴海敦, 熊木治郎, 川口正剛
高分子分析討論会講演要旨集   26 Oct 2011   
橋本紘志, 杉原孝樹, 熊木治郎
高分子学会予稿集(CD-ROM)   13 Sep 2011   
佐藤剛, 熊木治郎
高分子学会予稿集(CD-ROM)   13 Sep 2011   
渡邉謙次, 熊木治郎
高分子学会予稿集(CD-ROM)   13 Sep 2011   
柴田恒一郎, 中野遼, 川口正剛, 熊木治郎
高分子学会予稿集(CD-ROM)   13 Sep 2011   
生熊龍介, 杉原孝樹, 熊木治郎
高分子学会予稿集(CD-ROM)   13 Sep 2011   
齋藤悠太, 鳴海敦, 熊木治郎, 川口正剛
高分子学会予稿集(CD-ROM)   13 Sep 2011   
柴田恒一郎, 中野遼, 川口正剛, 熊木治郎
高分子学会予稿集(CD-ROM)   10 May 2011   
杉原孝樹, 熊木治郎
高分子学会予稿集(CD-ROM)   10 May 2011   
中野遼, 増子直也, 神保雄次, 鳴海敦, 熊木治郎, 川口正剛, 菊地守也
高分子学会予稿集(CD-ROM)   10 May 2011   
増子直也, 熊木治郎
高分子学会予稿集(CD-ROM)   10 May 2011   
佐藤剛, 熊木治郎
高分子学会予稿集(CD-ROM)   10 May 2011   
高梨ゆま, 熊木治郎
高分子学会予稿集(CD-ROM)   10 May 2011   
熊木治郎
ポリマーフロンティア21講演要旨集   28 Jan 2011   
杉原孝樹, 橋本紘志, 熊木治郎
高分子学会予稿集(CD-ROM)   1 Sep 2010   
高梨ゆま, 熊木治郎
高分子学会予稿集(CD-ROM)   1 Sep 2010   
渡邉謙次, 熊木治郎
高分子学会予稿集(CD-ROM)   1 Sep 2010   
高梨ゆま, 西浦崇文, 北山辰樹, 熊木治郎
高分子学会予稿集(CD-ROM)   1 Sep 2010   
高梨ゆま, 熊木治郎
高分子学会予稿集(CD-ROM)   11 May 2010   
杉原孝樹, 熊木治郎
高分子学会予稿集(CD-ROM)   11 May 2010   
北浦敦志, 下山宗徳, 飯田拡基, 河内岳大, 熊木治郎, 八島栄次
高分子学会予稿集(CD-ROM)   1 Sep 2009   
佐々木雄太郎, 相場直幸, 熊木治郎
高分子学会予稿集(CD-ROM)   1 Sep 2009   
相場直幸, 佐々木雄太郎, 熊木治郎
高分子学会予稿集(CD-ROM)   1 Sep 2009   
佐々木雄太郎, 相場直幸, 熊木治郎
高分子学会予稿集(CD-ROM)   12 May 2009   
北浦敦志, 下山宗徳, 飯田拡基, 河内岳大, 熊木治郎, 八島栄次
高分子学会予稿集(CD-ROM)   12 May 2009   
熊木治郎
化学系学協会東北大会プログラムおよび講演予稿集   11 Oct 2008   
八島栄次, 北浦敦志, 河内岳大, 熊木治郎
ネットワークポリマー講演討論会講演要旨集   9 Oct 2008   
熊木治郎, 梶谷孝, 永井寛嗣, 大越研人, 八島栄次
高分子学会予稿集(CD-ROM)   9 Sep 2008   
北浦敦志, 河内岳大, 熊木治郎, 草薙浩, 八島栄次
高分子学会予稿集(CD-ROM)   9 Sep 2008   
北浦敦志, 河内岳大, 熊木治郎, 草薙浩, 八島栄次
シンポジウム「モレキュラー・キラリティー」講演要旨集   22 May 2008   
熊木治郎, 河内岳大, 右手浩一, 北山辰樹, 八島栄次
高分子学会予稿集(CD-ROM)   8 May 2008   
坂野元紀, 八島栄次, 前田勝浩, 櫻井慎一郎, 熊木治郎
高分子学会予稿集(CD-ROM)   8 May 2008   
WU Zong‐Quan, 大越研人, 櫻井慎一郎, 熊木治郎, 永井寛嗣, 八島栄次, 鬼塚清孝
高分子学会予稿集(CD-ROM)   8 May 2008   
河内岳大, 熊木治郎, 北浦敦志, 草薙浩, 八島栄次
高分子学会予稿集(CD-ROM)   8 May 2008   
熊木治郎, 河内岳大, 草薙浩, 右手浩一, 北山辰樹, 八島栄次
高分子学会予稿集(CD-ROM)   4 Sep 2007   
河内岳大, 北浦敦志, 熊木治郎, 草薙浩, 八島栄次
高分子学会予稿集(CD-ROM)   4 Sep 2007   
草薙浩, 熊木治郎, 大越研人, 八島栄次
高分子学会予稿集(CD-ROM)   4 Sep 2007   
Jiro Kumaki, Takehiro Kawauchi, Kento Okoshi, Hiroshi Kusanagi, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2006   
Combination of Langmuir-Blodgett (LB) technique and atomic force microscopy (AFM) is a promising way to study polymer structures in molecular level. LB films of PMMA Sterecomplex have been observed by AFM systematically. The plausibility of the do...
Hiroshi Kusanagi, Hideo Kusuyama, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2006   
X-ray crystal structure analysis of syndiotactic poly(methyl methacrylate) complex with benzene was performed by using the quantum chemical calculation. The crystal is monoclinic with a = 4.35 nm, b = 4.35 nm, c (fiber axis) = 3.54 nm, and γ =107,...
Takehiro Kawauchi, Jiro Kumaki, Kento Okoshi, Hiroshi Kusanagi, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2006   
It has been known that syndiotactic poly(methyl methacrylate) (st-PMMA) forms a crystalline complex accompanying gelation with certain solvents, such as toluene. In the complex, the st-PMMA is believed to adopt a helical conformation in which the ...
Kento Okoshi, Hisanari Onouchi, Takashi Kajitani, Shin Ichiro Sakurai, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2006   
Novel helical poly[(4-isocyanobenzoyl) L-alanine decyl ester] (poly-L-1) aligns in the electric field due to a large dipole moment along its helical axis. It was elucidated by X ray analysis of the highly aligned samples in combination with molecu...
Wei Zhang, Wei Zhang, Masashi Shiotsuki, Masashi Shiotsuki, Toshio Masuda, Toshio Masuda, Jiro Kumaki, Jiro Kumaki, Eiji Yashima, Eiji Yashima, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2006   
Novel cylindrical polymer brushes consisting of a highly cis-transoidal poly(phenylacetylene) main chain and either polystyrene (PS) or poly(methyl methacrylate) (PMMA) side chains were synthesized by the macromonomer method. The polymer brushes w...
Kento Okoshi, Shin Ichiro Sakurai, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   18 Oct 2006   
Novel helical poly[N-(4-ethynylbenzoyl)alanine decyl esterjs undergo a helix-helix transition with the change of their persistence lengths from 130 nm to 19 nm, which are extremely longer than those of the previously reported polyacetylenes. It wa...
Takehiro Kawauchi, Shin Ichiro Sakurai, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   18 Oct 2006   
We report a novel method to construct the supramolecular nano network based on self-assembled C60 clusters, using isotactic and syndiotactic C60-end-capped poly(methyl methacrylate)s (it- and st-PMMA-C 60s) through their stereocomplex formation co...
Jiro Kumaki
Polymer Preprints, Japan   18 Oct 2006   
Atomic Force Microscopy (AFM) is a powerful tool to study materials in molecular (or atomic) levels. However, truly molecular-level observations are still limited. In this paper, we report our recent achievements in AFM observations in polymer sys...
Takashi Kajitani, Kento Okoshi, Shin Ichira Sakurai, Jira Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   18 Oct 2006   
We have found the unprecedented helix-sense controlled polymerization of an enantiomerically pure phenyl isocyanide bearing an L-alanine pendant with a long alkyl chain. The polymerization with an achiral nickel catalyst diastereoselectively proce...
Shin Ichiro Sakurai, Kento Okoshi, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   18 Oct 2006   
We report the switchable two-dimensional chiral surfaces based on inversion of macromolecular helicity of a helical poly(phenylacetylene) bearing L- or D-alanine pendants with a long alkyl chain upon exposure to different organic solvent vapors. T...
KUMAKI Jiro
高分子学会予稿集   24 May 2006   
櫻井慎一郎, 大越研人, 熊木治郎, 八島栄次
高分子学会予稿集(CD-ROM)   10 May 2006   
大越研人, 櫻井慎一郎, 熊木治郎, 八島栄次
高分子学会予稿集(CD-ROM)   10 May 2006   
河内岳大, 櫻井慎一郎, 熊木治郎, 八島栄次
高分子学会予稿集(CD-ROM)   10 May 2006   
梶谷孝, 大越研人, 櫻井慎一郎, 熊木治郎, 八島栄次
高分子学会予稿集(CD-ROM)   10 May 2006   
熊木治郎
高分子学会予稿集(CD-ROM)   10 May 2006   
Taro Nishinaka, Yuko Doi, Makiko Hashimoto, Akira Nakamura, Jiro Kumaki, Eiji Yashima, Atsushi Takano, Yushu Matsushita
Polymer Preprints, Japan   1 Dec 2005   
Development of preprogrammable conductive nanowires is a requisite for the future fabrication of nanoscale electronics based on molecular assembly. Here we report the synthesis of conductive metal nanowires from nucleoprotein filaments, complexes ...
Jiro Kumaki, Takehiro Kawauchi, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2005   
Two-dimensional folded-chain crystals of an isotactic poly(methyl methacrylate) obtained by the Langmuir-Blodgett method were studied by atomic force microscopy at the molecular level. The chain foldings, tie-chaines and defects of the crystals we...
Kento Okoshi, Shin Ichiro Sakurai, Koichi Sakajiri, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2005   
Novel helical poly[N-(4-ehynylbenzoyl)alanine decyl ester]s form clearly identified lyotropic liquid crystals. The polymers with non-racemic alanine residues as pendants take a helical rigid-rod conformation with long persistent lengths, which are...
Shin Ichiro Sakurai, Kento Okoshi, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2005   
Cholesteric liquid crystalline helical poly acetylenes bearing L- or D-alanine residues with a long alkyl chain as the pendants (poly-1) formed a well-defined self-assembly upon exposure to solvent vapors on graphite. Flat poly-1 monolayers epitax...
Koichi Sakajiri, Kanji Nagai, Katsuhiro Maeda, Kento Okoshi, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2005   
Poly(4-N-N-diisopropylaminomethyl)phenylacetylene) hydrochloride (poly-1-HCl) was found to form a cholesteric liquid crystal (LC) based on main chain stiffness in water by doping optically active acids. According to our previous study on the helic...
Jiro Kumaki, Takehiro Kawauchi, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2005   
Sterecomplex formation of mixtures of isotactic polydnethyl methacrylate) (it-PMMA) and syndiotactic (st) PMMA on water surface was studied by surface pressure-area curves and atomic force microscopy (AFM). Sterecomplex formations depended on the ...
Shin Ichiro Sakurai, Kento Okoshi, Jiro Kumaki, Eiji Yashma, Eiji Yashma
Polymer Preprints, Japan   1 Dec 2005   
A stereoregular, cis-transoidal poly[N-(4-ethynylbenzoyl)-L-alanine decyl ether] (poly-1L) formed a well-defined self-assembly on a solid surface under saturated atmosphere of organic solvents. The structure and morphology of the self-assemblies o...
Kanji Nagai, Koichi Sakajiri, Katsuhiro Maeda, Kento Okoshi, Jiro Kumaki, Takahiro Sato, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2005   
The hydrochloride of poly(4-(N,N-diisopropylaminomethyl)phenylacetylene) (poly-1-HCl) was found to form a cholesteric liquid crystal (LC) due to its main chain stiffness in water by doping optically active acids. It was confirmed that poly-1-HCl h...
Takehiro Kawauchi, Jiro Kumaki, Eiji Yashima, Eiji Yashima
Polymer Preprints, Japan   1 Dec 2005   
A high molecular weight C60-end-capped, isotactic poly(methyl methacrylate) (PMMA-C60) was synthesized by stereospecific anionic living polymerization of t-butyl methacrylate, followed by end-capping with C60, hydrolysis of the pendant esters, and...