• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Studies on photochemical control of macrostructure of polymers for automatic light and temperature modulators

Research Project

Project/Area Number 12650887
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 高分子構造・物性(含繊維)
Research InstitutionKumamoto University

Principal Investigator

KURIHARA Seiji  Kumamoto University, FACULTY OF ENGINEERING, ASSOCIATE, PROF., 工学部, 助教授 (50225265)

Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2001: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2000: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywordsoptical switching / cholesteric liquid crystals / chiral azobetaene / polymer liquid cystals / composite materials / chirality / 複合材料 / キラリティー / 透明 / 不透明
Research Abstract

1. Various azobenzene molecules (Azo) having chiral groups were prepared. Cholesteic phase was induced by doping the chiral azobenzene molecules. The twisting power of Azo molecules was changed by ultraviolet and visible light irradiation to cause trans-cis photoisomerization. The twisting power of trans-Azo was found to be larger than that of cis-Azo.
2. Three types of switching was achieved by the use of the induced cholesteric liquid crystals. One is a shift of a selective reflection. Second is an inversion of the chiral sense, and third was a switching between the cholesteric phase and a nematic phase.
3. Composite of polymer and the induced cholesteric liquid crystals was also found to / show the photochemical switchings. In addition, the composite materials showed good memory property more than the cholesteric materials without polymer.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] S.Kurihara, S.Nomiyama, T.Nonaka: "Photochemical control of the macrostructure of cholesteric liquid crystals by means of photoisomerization of chiral azobenzene molecules"Chemistry of Materials. 13. 1992-1997 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Kurihara, S. Nomiyama, T. Nonaka: "Photochemical control of the macrostructure of cholesteric Liquid ctystals by means of photoisomerization of chiral azobenzene molecules"Chemistry of Materials. 13. 1992-1997 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 栗原清二: "Photochemical control of the macrostructure of cholesteric liquid crystals by means of photoisomerization of chiral azobenzene molecules"Chemistry of Materials. 13・6. 1992-1997 (2001)

    • Related Report
      2001 Annual Research Report

URL: 

Published: 2000-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi