1992 Fiscal Year Annual Research Report

スメクティック液晶を溶媒とする高配向ポリアセチレンの合成と物性

Research Project

Project/Area Number	03650739
Research Institution	Institute of Materials Science, University of Tsukuba
Principal Investigator	赤木和夫筑波大学, 物質工学系, 助教授 (20150964)
Co-Investigator(Kenkyū-buntansha)	白川英樹筑波大学, 物質工学系, 教授 (40016720)
Keywords	スメクティック液晶 / ネマティック液晶 / 異方性反応場 / ポリアセチレン / 配向性 / 導電性 / チグラー・ナッタ触媒 / 無溶媒重合
Research Abstract	二種のフェニルシクロヘキシル系スメクティック液晶の等モル混合物を溶媒として用いた異方性反応場で、テトラブトキシチタン、Ti(OBu)_4、とトリエチルアミン、AlEt_3、からなるチーグラ・ナッタ触媒溶液を用いて、アセチレンの重合を行った。【chemical formula】走査型電子顕微鏡(SEM)観察の結果、ポリエン鎖の束であるフィブリルの配向形態は一様ではないものの、初めてスメクティック液晶相において直接配向フィルムを合成することに成功した。このフィルムは、巨視的には一様ではない配向にも関わらず微視的領域での配向性のため、ヨウ素によるケミカルドーピング後の電気伝導度は、1.3x10^4S/cmと、ネマティック液晶を用いて合成した配向フィルムの伝導度の最高値と同程度の高い値であった。次に、高強度・高延伸性ポリアセチレン薄膜の合成を目的として開発された新規無溶媒重合法を本液晶重合法に応用し、直接配向し、かつ力学的延伸性に優れたフィルムの合成を試みた。先ず、溶媒を用いずに室温でTi(OBu)_4-AlEt_3触媒を調製し、引き続き、150℃、1時間の高温熱処理を行った。その後、ネマティック液晶ないしはスメクティック液晶を適量加え所定の触媒濃度にし、これにアセチレンを導入した。液晶相を保つため、触媒の濃度そのものを低くせざるえなかったため、際だった延伸性の向上は得られなかったが、フィルムの脆さは改良された。

Research Products
(22 results)

All Other

All Publications (22 results)

[Publications] Kazuo AKAGI: "ESR Study on Ti(OR)_4-AIR'_3 Catalyst Systems-Structural Changes of Ti^<3+> Complex upon High-Temperature Aging" Synthetic Metals. 40. 197-218 (1991)
[Publications] Kazuo AKAGI: "Mechanism of Stereospecific Chlorination of Polyene via Prolonged Chemical Doping" J.Mol.Struct.(Theochem). 232. 211-224 (1991)
[Publications] Hideki SHIRAKAWA: "S-(CH)_X and N-(CH)_X-What is the Difference?" Synthetic Metals. 41. 13-18 (1991)
[Publications] Yoshikazu TANABE: "Kinetic Analysis of Cis-Trans Thermal Isomerization of Polyacetylene" J.Polym.Sci.,Part B,Polym.Phys.29. 501-507 (1991)
[Publications] Hideki SHIRAKAWA: "Chemical and Electrochemical Syntheses of Soluble Electroconducting Poly(2,5-Thienylene)Derivatives" J.Macromol.Sci.-Chem.A28. 1245-1254 (1991)
[Publications] Yung-Woo PARK: "Metallic Properties of Transition Metal-Halides Doped Polyacetylene:The Soliton Liquid State" Synthetic Metals. 41. 27-32 (1991)
[Publications] Chul Oh YOON: "Thermoelectric Power and Conductivity of the Stretch-Oriented Polyacetylene Film Doped with MoCl_5" Synthetic Metals. 41. 125-128 (1991)
[Publications] Kohzo ITO: "AC Conductivity of HS-PA and S-PA Films" Synthetic Metals,41,No.1-2,(1991),147-150.41. 147-150 (1991)
[Publications] Hiroko KYOTANI: "Morphology Dependence of DSC Curves for Cis-Trans Isomerization of Polyacetylene Films" Synthetic Metals. 41. 151-154 (1991)
[Publications] Hiroko KYOTANI: "Analysis of Thermal Isomerization of Polyacetylene Films Prepared by Various Methods" Rep.Prog.Polym.Phys.Jpn.34. 141-144 (1991)
[Publications] Kohzo ITO: "Complex Conductivity of Polyacetylene Films prepared by Different Methods" Phys.Rev.B.45. 1246-1254 (1992)
[Publications] Kazuo AKAGI: "Stereospecific Chlorination of Polyacetylene by Chemical Doping" Polymer. 33. 4058-4065 (1992)
[Publications] Kazuo AKAGI: "Intrinsic Non-Solvent Polymerization Method for Synthesis of Highly Stretchable and Highly Conductive Polyacetylene Films" Macromolecules. 25. 6725-6726 (1992)
[Publications] Kohzo ITO: "Comparative Study on the Complex Conductivity of Polyacetylene Films Prepared by Different Methods" Bulletin of Research Institute for Polymers and Textiles. No.170. 31-40 (1992)
[Publications] Chul Oh YOON: "The Solition State of Heavily Doped Polyacetylene" Mol.Crsyt.Liq.Cryst.224. 69-73 (1993)
[Publications] Se Young OH: "Polymerization of 4-Phenyl-1-Butyne Catalyzed by Metathesis and Ziegler-Natta Catalysts" J.Polym.Sci.,Part A:Polym.Chem.(1993)
[Publications] Kazuo AKAGI: "Dependence of Electrical Conductivity on Film Thickness in Polyacetylene-Effects of Mechanically Forced Parallel and In-plane Alignments of Fibrils" Synthetic Metals. (1993)
[Publications] Kazuo AKAGI: "Intrinsic Non-Solvent Polymerization Method for Synthesis of Polyacetylene Films" Synthetic Metals. (1993)
[Publications] Chul Oh YOON: "Temperature Dependent Anisotropy of Intermediately Doped Polyacetylen" Synthetic Metals. (1993)
[Publications] Kazuo AKAGI: "Development of Highly Conducting Polyacetylene Films with High Tensile Strength and High Stretchability" Proceedings of the Japan Congress on Materials Research. (1993)
[Publications] Hideki SHIRAKAWA: "Synthesis and Characterization of Polyacetylene.Conjugated Polymers and Related Materials:The Interconnection of Chemical and Electronic Structure," Proceedings for The Eighty-First Nobel Symposium. 65-72 (1993)
[Publications] Hideki SHIRAKAWA: "Synthesis of Highly Conducting Polyacetylene Thin Films" Progrss of Theoretical Physics,Supplement. (1993)

1992 Fiscal Year Annual Research Report

スメクティック液晶を溶媒とする高配向ポリアセチレンの合成と物性

Principal Investigator

赤木 和夫 筑波大学, 物質工学系, 助教授 (20150964)

Research Products

[Publications] Kazuo AKAGI: "ESR Study on Ti(OR)_4-AIR'_3 Catalyst Systems-Structural Changes of Ti^<3+> Complex upon High-Temperature Aging" Synthetic Metals. 40. 197-218 (1991)

[Publications] Kazuo AKAGI: "Mechanism of Stereospecific Chlorination of Polyene via Prolonged Chemical Doping" J.Mol.Struct.(Theochem). 232. 211-224 (1991)

[Publications] Hideki SHIRAKAWA: "S-(CH)_X and N-(CH)_X-What is the Difference?" Synthetic Metals. 41. 13-18 (1991)

[Publications] Yoshikazu TANABE: "Kinetic Analysis of Cis-Trans Thermal Isomerization of Polyacetylene" J.Polym.Sci.,Part B,Polym.Phys.29. 501-507 (1991)

[Publications] Hideki SHIRAKAWA: "Chemical and Electrochemical Syntheses of Soluble Electroconducting Poly(2,5-Thienylene)Derivatives" J.Macromol.Sci.-Chem.A28. 1245-1254 (1991)

[Publications] Yung-Woo PARK: "Metallic Properties of Transition Metal-Halides Doped Polyacetylene:The Soliton Liquid State" Synthetic Metals. 41. 27-32 (1991)

[Publications] Chul Oh YOON: "Thermoelectric Power and Conductivity of the Stretch-Oriented Polyacetylene Film Doped with MoCl_5" Synthetic Metals. 41. 125-128 (1991)

[Publications] Kohzo ITO: "AC Conductivity of HS-PA and S-PA Films" Synthetic Metals,41,No.1-2,(1991),147-150.41. 147-150 (1991)

[Publications] Hiroko KYOTANI: "Morphology Dependence of DSC Curves for Cis-Trans Isomerization of Polyacetylene Films" Synthetic Metals. 41. 151-154 (1991)

[Publications] Hiroko KYOTANI: "Analysis of Thermal Isomerization of Polyacetylene Films Prepared by Various Methods" Rep.Prog.Polym.Phys.Jpn.34. 141-144 (1991)

[Publications] Kohzo ITO: "Complex Conductivity of Polyacetylene Films prepared by Different Methods" Phys.Rev.B.45. 1246-1254 (1992)

[Publications] Kazuo AKAGI: "Stereospecific Chlorination of Polyacetylene by Chemical Doping" Polymer. 33. 4058-4065 (1992)

[Publications] Kazuo AKAGI: "Intrinsic Non-Solvent Polymerization Method for Synthesis of Highly Stretchable and Highly Conductive Polyacetylene Films" Macromolecules. 25. 6725-6726 (1992)

[Publications] Kohzo ITO: "Comparative Study on the Complex Conductivity of Polyacetylene Films Prepared by Different Methods" Bulletin of Research Institute for Polymers and Textiles. No.170. 31-40 (1992)

[Publications] Chul Oh YOON: "The Solition State of Heavily Doped Polyacetylene" Mol.Crsyt.Liq.Cryst.224. 69-73 (1993)

[Publications] Se Young OH: "Polymerization of 4-Phenyl-1-Butyne Catalyzed by Metathesis and Ziegler-Natta Catalysts" J.Polym.Sci.,Part A:Polym.Chem.(1993)

[Publications] Kazuo AKAGI: "Dependence of Electrical Conductivity on Film Thickness in Polyacetylene-Effects of Mechanically Forced Parallel and In-plane Alignments of Fibrils" Synthetic Metals. (1993)

[Publications] Kazuo AKAGI: "Intrinsic Non-Solvent Polymerization Method for Synthesis of Polyacetylene Films" Synthetic Metals. (1993)

[Publications] Chul Oh YOON: "Temperature Dependent Anisotropy of Intermediately Doped Polyacetylen" Synthetic Metals. (1993)

[Publications] Kazuo AKAGI: "Development of Highly Conducting Polyacetylene Films with High Tensile Strength and High Stretchability" Proceedings of the Japan Congress on Materials Research. (1993)

[Publications] Hideki SHIRAKAWA: "Synthesis and Characterization of Polyacetylene.Conjugated Polymers and Related Materials:The Interconnection of Chemical and Electronic Structure," Proceedings for The Eighty-First Nobel Symposium. 65-72 (1993)

[Publications] Hideki SHIRAKAWA: "Synthesis of Highly Conducting Polyacetylene Thin Films" Progrss of Theoretical Physics,Supplement. (1993)

赤木和夫筑波大学, 物質工学系, 助教授 (20150964)