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Studies on Nonlinear Optic Properties of Liquid Crystalline Polymers

Research Project

Project/Area Number 02650655
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 高分子物性・高分子材料(含機械材料)
Research InstitutionScience University of Tokyo

Principal Investigator

KOIDE Naoyuki  Science University of Tokyo, Chemistry, Professor, 理学部, 教授 (30084346)

Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1991: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1990: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsLiquid Crystal Polymer / Nonlinear Optic / Mesogen / Ferroelectricity / Chirality / Mesophase / Cholesteric / メリフェ-ズ / 非線形光学効果 / 第二高調波 / 誘電異方性 / 染料モノマ- / 共重合体 / ポリエステル
Research Abstract

Main chain type liquid crystalline polymers were prepared from 6acethoxy-2-naphthoic acid[BON6], p-acethoxy benzoic acid[PHB]or p, p'diacethoxybiphenyl[BP]and chiral compound. (s)-(+)-2-(6-acethoxy-2naphthyl)propionic acid[HNPA], D-(+)camphoric acid[DCA]and tartaric acid[TA]were used as a chiral component. The mesomorphic properties of the copolyesters(HNPA-BON6-PHB)were obtained at the contents of HNPA ranging from 10mole% to 50mole%. A finger-printed texture characteristic of cholesteric phase was observed for the copolyester at the 20mole% contents of HNPA. This copolyester exhibited the second harmonic generation (SHG) without orientational process. In order to clarify this effect, copolyester having racemic HNPA was synthesized. The other two chiral copolyesters system did not show the SHG. However, the copolyesters (DCA-BP-PHB) showed a selective reflection in visible region, and the absorption spectrum was shifted from 540nm to 690nm according to decrease of DCA contents in the copolyester. The copolyesters containing tartaric acid exhibited a ferroelectric properties. The chiral component in the polymer would play an important role in order to produce high functional properties.
Two types of liquid crystalline polymers were synthesized by the radical polymerization. A dialkylaminocyanostilbene was used as a mesogenic group in the case of homopolymer, and copolymers having the same dielectric anisotropy were prepared from the Disperse Red 1 as a nonlinear optical (NLO) component and cyanobenzoate as a mesogenic group in the methacrylate.
In the case of cyanostilbene system, only monomer showed SHG, because of the lack of orientation for the polymer.
The SHG value increases with increasing contents of Disperse Red 1 in the mesophase for the copolymer. The enhancement of the SHG value would be deeply attributed to the liquid crystalline orientation.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 小出 直之,小倉 靜雄: "Thermal and Optical Properties of Side chain Type diguid Crystal Copolymers Containing Azo Dye" Reports on Progress in Polymer Physics in Japan. 33. 265-268 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小出 直之,伊藤 大太郎: "Liquid Crystalline Behaviour of Side chain Type Polymers Containing Substituent Azobenzene as Mesogenis Core" Rrports on Progress in Polymer Physics in Japan. 33. 269-270 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小出 直之,金子 哲也,細川 聡: "Thermal Properties of Liquid Crystolline Copolymers with Variation of Terminal Group" Rrports on Progress in Polymer Physics in Japan. 33. 271-272 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小出 直之,小倉 靜雄,青山 陽子: "Thermal Transition Beharieur and Secand Nonlinear Optical Properties of Polymers Containing Mesogenis Side Chains" Mol.Crpt.Liq.Cryst.198. 323-330 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小出 直之: "液晶ポリマ-の合成と機能" 有機合成化学協会誌. 49. 497-505 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Naoyuki Koide and Shizuo Ogura: "Thermal and Optical Properties of Side Chain Type Liquid Crystal Copolymers Containing Azo Dye" Rep. Prog. Polym. Phys. Jpn.33. 265 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Naoyuki Koide, Shizuo Ogura and Daitaro Itoh: "Liquid Crystalline Behavior of Side Chain Type Polymers Containing Substituent Azobenzene as Mesogenic Core" Rep. Prog. Polym. Phys. Jpn.33. 269 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Naoyuki Koide, Tetsuya Kaneko and Satoshi Hosokawa: "Thermal Properties of Liquid Crystalline Copolymers With Variation of Terminal Group" Rep. Prog. Polym. Phys. Jpn.33. 271 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Naoyuki Koide, Shizuo Ogura and Yohko Aoyama: "Thermal Transition Behavior and Second Nonlinear Optical Properties of Polymers Containing Mesogenic Side Chains" Mol. Cryst. Liq. Cryst.198. 323 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Naoyuki Koide: "Synthesis and Functional Properties of Liquid Crystalline Polymers" J. Synthetic Org. Chem. Jpn.49. 497 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小出 直之,小倉 静雄,青山 陽子: "Thermol Transition Behariour and Secend nonlinear optical Properties of Polymers containing mesogevie side chains" Mol.cryst.diq.cryst.198. 323-330 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 小出 直之: "液晶ポリマ-の合成と機能" 有機合成化学協会誌. 49. 497-505 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Naoyuki Koide Shizuo Ogura: "Thermal and Optical Properties of Side Chain Type Liquid Crystal Copolymers Containin Azo Dye" Rep.Prog.Polym.Japan. 33. 265-268 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Naoyuki Koide,Shizuo Ogura,Michiyuki Amano,Toshikuni Kaino: "Thermal Transition Behavior and Second Nonlinear Optical Properties of Polymers Containing Mesogenic Side chains" Mo.1.Cryst.Liq.Cryst.1-8 (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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