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

A Study on Reversible Optical Recording Utilizing Insulator-Metal Transition

Research Project

Project/Area Number 01850062
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field 電子材料工学
Research InstitutionOsaka University

Principal Investigator

YOSHINO Katsumi  Osaka Univ., Facul. Eng., Prof., 工学部, 教授 (70029205)

Co-Investigator(Kenkyū-buntansha) ONODA Mitsuyoshi  Himeji Insti. Tech., Research Assoc., 電気工学科, 助手 (80128785)
OHSAWA Toshiyuki  Ricoh Co. Ltd., Researcher, 研究員
SUGIMOTO Ryuichi  Mitsui Toatsu Chemicals Inc., Researcher, 研究員
OZAKI Masanori  Osaka Univ., Facul. Eng., Research Assoc., 工学部, 助手 (50204186)
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥7,800,000 (Direct Cost: ¥7,800,000)
Fiscal Year 1990: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1989: ¥7,000,000 (Direct Cost: ¥7,000,000)
KeywordsConducting polymer / Photo-recording / Insulator-metal transition / Poly (3-alkylthiophene) / Memory / Poly (p-phenylene vinylene) / Doping / Electronic structure / 絶縁体ー金属転移 / ポリ(pーフェニレンビニレン) / ポリチオフェン / ポリパラフェニレンビニレン
Research Abstract

A number of conducting polymers were prepared and the mechanism, Kinetics, stability of insulator-metal transition upon doping were investigated. Effects of molecular structure and higher order structure on the fundamental properties were also investigated. A reversible optical recording was demonstrated by electrochemical doping and photo-induced doping utilizing the conducting polymer. The results can be summarized as follows. 1. The color of the conducting polymer in the undoped state which is determined by the band gap energy showed dependence on the chemical and the higher order structures of the conducting polymers. 2. The upper edges of the valence bands of the conducting polymers such as poly (3-alkylthiophene) and poly (p-phenylene vinylene) were lowered with substituent groups resulting in the improved stabilities of the derivatives of the conducting polymers and of the recording. 3. ESR measurements indicated generation of the polaron and the bipolaron during the electrochemical doping reaction. 4. Kinetics of the electrochemical doping-undoping reactions of the conducting polymers, which are controlled with diffusion rate of the dopant ions within the polymer layers, were activated with the number of the doping-undoping cycles. 5. Poly (-alkylthiophene) which was combined with a photo- dissociative dopant showed the insulator-metal transition with the light irradiation resulting in change in the color. 6. Various factors which determine the recording and erasing speeds of the optical recording and also their stability were clarified.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] M.Onoda: "Anisotropy of Absorption and Photoluminescence Spectra of Stretched Poly(3ーalkylthiophene)" Japanese Journal of Applied Physics. 29. 1490-1494 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Yoshino: "Learning Effect in the Doping Process of Conducting Polymer" Japanese Journal of Applied Physics. 29. L995-L997 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Yoshino: "Learning Effect in Chemically Prepared Conducting Polymers" Chemistry Express. 5. 325-328 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M.Onoda: "In Situ Electron Spin Resonance Measure ments of Electroche mically Doped nーType Polythiophene" Journal of the Physical Society of Japan. 59. 213-217 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Yoshino: "Dependence of Luminescence in Five Membered Heterocyclic Conducting Polymers on Molecular Structure and Temperature" Journal of Applied Physics. 68. 5976-5980 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Yoshino: "Photoinduced Solubilization of Conducting Polymers and Its Application to Etching and Recording" Japanese Journal of Applied Physics. 29. L1716-L1719 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Onoda: ""Anisotropy of Absorption and Photoluminescence Spectra of Stretched Poly (3-alkylthiophene)"" Jpn. J. Appl. Phys.29. 1490-1494 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Yoshino: ""Learning Effect in the Doping Process of Conducting Polymer"" Jpn. J. Appl. Phys.29. L995-L997 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Yoshino: ""Learning Effect in Chemically Prepared Conducting Polymers"" Chem. Express. 5. 325-328 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Onoda: ""In Situ Electron Spin Resonance Measurements of Electrochemically Doped n-Type Polythiophene"" J. Phys. Soc. Jpn.59. 213-217 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Yoshino: ""Dependence of Luminescence in Five Membered Heterocyclic Conducting Polymers on Molecular Structure and Temperature"" J. Appl. Phys.68. 5976-5980 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Yoshino: ""Photoinduced Solubilization of Conducting Polymers and Its Application to Etching and Recording"" Jpn. J. Appl. Phys.29. L1716-L1719 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M.Onoda: "Anisotropy of Absorption and Photoluminescence Sperctra of Stretched Poly(3ーalkylthiophene)" Jananese Journal of Applied Physics. 29. 1490-1494 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Yoshino: "Learning Effect in the Doping Process of Conducting Polymer" Japanese Journal of Applied Physics. 29. L995-L997 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Yoshino: "Learning Effect in Chemically Prepared Conducting Polymers" Chemistry Express. 5. 325-328 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] M.Onoda: "In Situ Electron Spin Resonance Measurements of Electrochemically Doped nーType Polythiophene" Journal of the Physical Society of Japan. 59. 213-217 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Yoshino: "Dependence of Luminescence in Five Membered Heterocyclic Conducting Polymers on Molecular Structure and Temperature" Journal of Applied Physics. 68. 5976-5980 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Yoshino: "Photoinduced Solubilization of Coducting Polymers and Its Application to Etching and Recording" Japanese Journal of Applied Physics. 29. L1716-L1719 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Yoshino: "ANOMALOUS DEPENDENCE OF LUMINESCENCE OF POLY(3-ALKYLTHIOPHENE)ON TEMPERATURE AND ALKYL CHAIN LENGTH" Solid State Communications. 69. 143-146 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] K.Yoshino: "EFFECT OF ELONGATION ON PHOTO-LUMINESCENCE OF POLY(3-ALKYLTHIOPHENE)" Solid State Communications. 70. 111-113 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] M.Onoda: "In Situ Electron Spin Resonance Measurements of Elecrochemically Doped n-Type Polythiophene" Journal of the Physical Society of Japan. 59. 213-217 (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] M.Onoda: "A photo-electron emmision study of polythiophene deravatives" Journal of Physics;Condensed Matter. 1. 3859-3864 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] M.Onoda: "Temperature Dependence of the Doping Effect of poly(3-alkylthiophene)and Polaronic State" Journal of the Physical Society of Japan. 58. 1895-1898 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] K.Yoshino: "Photoconductivity of Poly(3-alkylthiophene)in Solid and Liquid State" Japanese Journal of Applied Physics. 28. L1029-L1031 (1989)

    • Related Report
      1989 Annual Research Report

URL: 

Published: 1989-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi