導電性と発光性及び液晶性を併せ持つ多元機能型共役高分子の合成と物性

2000 Fiscal Year Annual Research Report

• Project/Area Number: 10650876
• Research Institution: University of Tsukuba
• Principal Investigator: 赤木 和夫 筑波大学, 物質工学系, 教授 (20150964)
• Keywords: 芳香族共役系高分子 / 側鎖型液晶性高分子 / 液晶相 / 導電性 / 発光性 / 磁場配向 / 電気的異方性 / 光学的二色性

Research Abstract

芳香族共役系高分子の側鎖に液晶基を導入して、液晶性を付与させるとともに、液晶のもつ分子配向能を利用して導電性や発光特性に電気的異方性や発光二色性を発現させることに成功した。
(1)液晶性を有する芳香族共役系高分子、ポリパラフェニレン誘導体、ポリパラフェニレンビニレン誘導体、ポリチオフェン誘導体、およびポリチエニレンビニレン誘導体を合成した。
(2)合成したポリマーについて、示差走査熱量計による液晶転移温度の測定、偏光顕微鏡観察による液晶相の光学模様の観察、およびX線回折による液晶相の帰属を通じて、液晶性高分子の高次構造とその形成過程を明らかにした。
(3)強磁場下で液晶状態にあるポリマーを配向させ、巨視的配向構造を構築した。次に、紫外・可視および赤外吸収スペクトルにおける光学的二色比を算出して、液晶相での秩序度を定量的に評価した。
(4)液晶状態で磁場配向させたポリマーについて化学ドーピングを行い、導電性の向上と分子配向に伴う電気的異方性を発現させた。
(5)配向ポリマーについて蛍光スペクトルを観測し、発光二色性を確認するとともにその光学的異方性を発現さえることに成功した。

Research Products

• [Publications] G.Piao: "Advanced Conjugated Polymer-Helical Polyacetylene"Polym.Adv.Tech.. 11. 1-5 (2000)
• [Publications] X.M.Dai: "Characterization of Ferroelectric Liquid Crystalline Polythiophene Derivatives"Trans.Mat.Res.Soc.Jap.. 25. 42-430 (2000)
• [Publications] G.Piao: "Novel Chiral Titanium Complexes as Chiral Dopants with Catalytic Activity for Synthesis of Helical Polyacetylene"Synthetic Metals. (in press). (2000)
• [Publications] H.Shirakawa: "Synthesis of Vertically Aligned Polyacetylene Films in Homeotropic Liquid Crystalline Solvents"Synthetic Metals. (in press). (2001)
• [Publications] H.Goto: "Synthesis of Liquid Crystalline Polyaniline Derivatives and their Orientational Behaviors under Magnetic Force Field"Synthetic Metals. (in press). (2001)
• [Publications] H.Goto: "Novel Helical Conjugated Polymers : Synthesis and Optical Properties of Polyarylenemethine Derivatives bearing Chiroptical Substituents"Synthetic Metals. (in press). (2001)
• [Publications] O.Karthaus: "Pattern Formation in Polymer Films by Non-Linear Processes"Macromolecular Chemistry, Symposia. (in press). (2001)
• [Publications] X.M.Dai: "Ferroelectric Liquid Crystalline Polythiophene Derivatives"Synthetic Metals. (in press). (2001)
• [Publications] J.Oguma: "Magnetically Forced Alignment of Liquid Crystalline Aromatic Conjugated Polymers and Their Electrical and Optical Anisotropies"Synthetic Metals. (in press). (2001)
• [Publications] I.Osaka: "Dichroic Fluorescence of Liquid Crystalline Polythiophene and Polythienylenevinylene Derivatives"Synthetic Metals. (in press). (2001)
• [Publications] A.Matsushita: "C_nF_<2n+2> Intercalation in Polyacetylene"Synthetic Metals. (in press). (2001)
• [Publications] Kiebooms: "Poly (isothianaphthene methine)s with Liquid Crystalline Substituents"Synthetic Metals. (in press). (2001)
• [Publications] H.Goto: "Orientational Behavior of Mono-Substituted Liquid Crystalline Polyaniline Derivatives"Synthetic Metals. (in press). (2001)
• [Publications] I.Osaka: "Synthesis and Properties of Polythiophene and Polythienylenevinylene Derivatives with Liquid Crystallinity"Synthetic Metals. (in press). (2001)
• [Publications] X.-M.Dai: "Synthesis and Properties of Ferroelectric Liquid Crystalline Polyacetylene Derivatives"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] H.Narihiro: "Synthesis and Properties of Polythienylene Derivatives with Fluorine-Containing Chiral Liquid Crystalline Substituents (I) "Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] X.-M.Dai: "Synthesis and Properties of Polythienylene Derivatives with Fluorine-Containing Chiral Liquid Crystalline Substituents (II)"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] J.Oguma: "Synthesis and Properties of Ferroelectric Liquid Crystalline Poly (p-phenylenevinylene) Derivatives"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] G.Piao: "Synthesis of Vertically Aligned Polyacetylene Films in Homeotropic Chiral Nematic Liquid Crystals"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] K.Kanazawa: "Synthesis of Liquid Crystalline Binaphthyl Derivatives"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] H.Goto: "Synthesis and Properties of Polyacetylene Copolymer with Liquid Crystal and Stable Radical Substituents"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] H.Goto: "Ferroelectric Liquid Crystalline Conjugated Polymer with Small Bandgap-Synthesis and Properties of Poly (pyrrylene methine) Derivative"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] H.Goto: "Polaron-Type Magnetic Conjugated Polymer with Liquid Crystallinity"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] O.Karthous: "Mesoscopic Surface Structures in Dewetted Films of Liquid Crystalline Polymers"Mol.Cryst.Liq.Cryst.. (in press). (2001)
• [Publications] G.Piao: "Synthesis of Well-Controlled Helical Polyacetylene Films using Chiral Nematic Liquid Crystals"Current Applied Physics. (in press). (2001)
• [Publications] Kiebooms: "Synthesis of New Class of Low-Bandgap Polymers with with Liquid Crystalline Substituents"Macromolecules. (to be publsihed). (2001)
• [Publications] 赤木和夫: "らせん状導電性高分子へリカルポリアセチレンの研究"Science & Technonews Tsukuba. 54. 10-13 (2000)
• [Publications] 赤木和夫: "液晶性をもったらせん状共役系高分子の創成"化学. 55. 62-63 (2001)
• [Publications] 赤木和夫: "らせん状導電性高分子へリカルポリアセチレンの創成"Jasco Report. 43. 17-21 (2001)
• [Publications] 赤木和夫(分担執筆): "「導電性」液晶便覧"丸善. 402-404 (2000)
• [Publications] 赤木和夫(分担執筆): "「電気を通す液晶分-光りもする液晶分子」分子がつくるナノの不思議"第14回「大学と科学」公開シンポジウム組織委員会編(クバプロ). 121-134 (2000)