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Development and Optical and Electric Properties of Novel Polymer Liquid Crystals with Opto-functional Properties

Research Project

Project/Area Number 04640504
Research Category

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

Allocation TypeSingle-year Grants
Research Field 有機化学一般
Research InstitutionYamaguchi University

Principal Investigator

TAKENAKA Shunsuke  Department of Materials Science and Engineering, Professor, 工学部, 教授 (50029310)

Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1993: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1992: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsSynthesis / Liquid crystals / Glass transformation / Thermal properties / Phase transition / Dielectric properties / Light valve / Polymer liquid crystals / ネマチック / スメクチック / 光機能性 / ライトバルブ / 電場応答性 / 分子構造 / 高分子 / 非線形光学 / 表示材料 / 液晶性 / ガラス状態
Research Abstract

In the present work, some liquid crystalline materials with a long-alkoxyl group at the lateral position were synthesized, and their thermal properties were investigatied with DSC thermogram. The results showed that the lateral long-alkoxy1 group reduces the liquid crystalline properties, and facilitate the glassy transformation, and the terminal long-alkoxy1 groups enhance the glassy transformation temperature, and the lateral one reduce it. Interestingly, some members show 2-steps glassy transformation similar to usual polymer materials.
The related polymers as shown above were synthesized, and investigated the thermal and opto-electrical properties. Compounds 1 and 2 show a nematic phase and as well as a smectic one when both terminal alkoxy1 groups are suitably long. The cyano derivatives(2) have two states, i.e., homogeneous, and homeotropic states under an electric or a magnitic field. The former and latter states correspond to a light scattering and transparent states, respectively. The results indicate that the polymers are possible to apply to the light-valve devices.
On the other hand, compound 3 shows only smectic A and C phases, and the molecular arrangement in these states does not change by the physical forces.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] S.Takenaka and H.Yamasu: "Molecular Structure and Liquid Crystalline Properties:The Effect of Lateral Long-alkoxy Chain on the Thermal Properties of Nematic and Smectic Phases" Mol.Cryst.Liq.Cryst.238. 157-165 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and K.Yamazaki: "Thermal Properties of Liquid Crystals Having an ω-Acryloyloxyalkyl Group at the Lateral Position" Mol.Cryst.Liq.Cryst.(1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and K.Teshima: "Substituent Effects on Mesomorphic Properties of Some Liquid Crystals with 4-Nitrobenzene at the Terminal Position" Bull.Chem.Soc.Jpn.67. (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and H.Yamasu: "Studies on Glassy Transformation of Liquid Crystalline Materials" Faraday Trans.90. (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and K.Yamasaki: "Synthesis and Thermal Properties of Novel Polymer Liquid Crystalshaving a Laterally-attached Liquid Crystalline Core at the Side Chain" Mol.Cryst.Liq.Cryst.(印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and H.Yamasu: "Molecular Structure and Liquid Crystalline Properties : The Effect of Lateral Long-alkoxy Chain on the Thermal Properties of Nematic and Smectic Phases" Mol.Cryst.Liq.Cryst.238. 157 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and H.Yamazaki: "Thermal Properties of Liquid Crystals Having an omega-Acryloyloxyalkyl Group at the Lateral Position" Mol.Cryst.Liq.Cryst.000,000. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and K.Teshima: "Substituent Effects on Mesomorphic Properties of Some Liquid Crystals with 4-Nitrobenzene at the Terminal Position" Bull.Chem.Soc.Jpn.67, (No.5 or 6)000. (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and H.Yamasu: "Studies on Glassy Transformation of Liquid Crystalline Materials" Faraday Trans.90, (No.10)000. (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Takenaka and K.Yamasaki: "Synthesis and Thermala Properties of Novel Polymer Liquid Crystalshaving a Laterally-attached Liquid Crystalline Core at the Side Chain" Mol.Cryst.Lig.Cryst.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shunsuke Takenaka: "Thermal Properties of Liquid Crystals harring an ω-Acryloyloxyofy-alkyl Group at the Lateral Position" Molecular Crystals and Liquid Crystals. (印刷中).

    • Related Report
      1993 Annual Research Report
  • [Publications] Shunsuke Takenaka: "Studies on Glassy Transformation of Liquid Crystalline Materials" J.C.S.Farady Trans.(印刷中).

    • Related Report
      1993 Annual Research Report
  • [Publications] Shunsuke Takenaka: "Synthesis and Thermal Properties of Nouel Polymer Liquid Crystals having a Laterally-attached Liquid Crystalline core at the Side Chain" Molecular Crystals and Liquid Crystals. (印刷中).

    • Related Report
      1993 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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