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Orientational photocontrol of dye molecules assisted by polymer surfaces

Research Project

Project/Area Number 08651069
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 InstitutionResearch Laboratory of Resources Utilization, Tokyo Institute of Technology

Principal Investigator

ICHIMURA Kunihiro  Tokyo Institute of Technology, Research Laboratory of Resources Utilization, Professor, 資源化学研究所, 教授 (90232412)

Co-Investigator(Kenkyū-buntansha) NAKAGAWA Masaru  Tokyo Institute of Technology, Research Laboratory of Resources Utilization, Res, 資源化学研究所, 助手 (10293052)
林 ゆう子  東京工業大学, 資源化学研究所, 教務職員 (30218599)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1997: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1996: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsAzobenzene / Thin film / Linearly polarized light / Dichorism / Reorientation / Nematic Phase / Orientational control / Lyotropic phase / 原子間力顕微鏡 / 偏光顕微分光
Research Abstract

During the course of studies on the orientational photocontrol of a water-soluble diazo-dye on thin films of azobenzene polymers, it was revealed that concentrated aqueous solutions of the dichroic dye display lyotropic phases. It was found in this fiscal year that the addition of a non-ionic surfactant modifies the M-phase of a dye solution to give rise to a nematic texture with T_<NI>=ca.50゚. X-ray diffraction patterns suggested that the mesophasic solution possesses two periodical structures probably corresponding to the distance between stacked dye molecules and to that between columns consisting of stacked molecules. When the aqueous solution with lyotropic phase was filled in a cell coated with thin films of an azobenzene polymer after exposure of the films to linearly polarized light, the orientational direction of dye molecules was determined by the electric vector of actinic light to give stable photoimages even though the system contains more than 90% of water. It was shown furthermore that a lyotropic phase of an aqueous solution of an anti-asthmatic drug, DSCG,is subjected to photoinduced alignment control in the same way.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] K.Ichimura: "Polarization photochromism of polymer thin films and its applications" Mol.Cryst.Liq.Cryst.298. 221-226 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Ichimura, Y.Akita and Y.Hayashi: "Reactivity of polymers with regioisomeric cinnamate side chains and their ability to regulate liquid crystal alignment" Macromolecules. 30. 903-911 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Furumi, H.Akiyama, S.Morino and K.Ichimura: "A convenient preparation of photoactive monolayers for liquid crystal photoalignment" J.Mater.Chem.8. 65-70 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Ichimura,M.Momose,K.Kudo and N.Ishizuki: "Surface-assisted formation of anisotropic dye molecular films" Thin Solid FiIms. 284/285. 557-560 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Ichimura: "Polarization photochromism of polymer thin films and its applications" Mol.Cryst.Liq.Cryst.298. 221-226 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Ichimura, Y.Akita and Y.Hayashi: "Reactivity of polymers with regioisomeric cinnamate side chains and their ability to regulate liquid crystal alignment" Macromolecules. 30. 903-911 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Furumi, H.Akiyama, S.Morino and K.Ichimura: "A convenient preparation of photoactive monolayrs for liquid crystal photoalignment" J.Mater.Chem.8. 65-70 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Ichimura, M.Momose, K.Kudo, H.AKiyama and N.Ishizuki: "Surface-assisted formation of anisotropic dye molecular films" Thin Solid Films. 284/285. 557-560 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Ichimura: "Polarization photochromism of polymer thin films and its applications" Mol.Cryst.Liq.Cryst.298. 221-226 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Ichimura, Y.Akita and Y.Hayashi: "Reactivity of polymers with regioisomeric cinnamate side chains and their ability to regulate liqued crystal alignment" Macromolecules. 30. 903-911 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Furumi, H.Akiyama, S.Morimo and K.Ichimura: "A convenient preparation of photoactive monolayers for liquid crystal photoalignment" J.Mater.Chem.8. 65-70 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Ichimura,M.Momose,K.Kudo: "Surface-assisted formation of anisotropic dye molecular films" Thin Solid Films. 284/285. 557-560 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Ichimura,Y.Akita,Y.Hayashi: "Role of E/Z photoisomerization of cinnamate side chains attached to polymer backbones in the alignment photoregulation of nematic liquid crystals," Jpn.J.Appl.Phys.35. L996-L999 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Ichimura: "Surface-assisted photoregulation of molecular assemblage as commander-soldier molecular systems" Supramol.Sci.3. 67-82 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Akiyama,K.Kudo,K.Ichimura: "Liquid crystal alignment regulation using photocrosslinkable polymers with azide residues" J.Photopolym.Sci.Technol.9. 49-52 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 市村國宏: "季刊総説・有機フォトクロミズムの化学" 学会出版センター, 13 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Ichimura: "Polymers as Electrooptical and Photooptical Active Media" (Springer), 35 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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