中国物理B ›› 2005, Vol. 14 ›› Issue (2): 306-310.doi: 10.1088/1009-1963/14/2/015

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Photophysical characteristics of polyaniline with photochromic azobenzene side groups

黄琨1, 万梅香1, 封伟2   

  1. (1)Centre for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; (2)Department of Polymer Materials Science and Engineering, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
  • 收稿日期:2004-06-08 修回日期:2004-09-17 出版日期:2005-03-02 发布日期:2005-03-02
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60307001).

Photophysical characteristics of polyaniline with photochromic azobenzene side groups

Feng Wei (封伟)a, Huang Kun (黄琨)b, Wan Mei-Xiang (万梅香)b    

  1. a Department of Polymer Materials Science and Engineering, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China; b Centre for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2004-06-08 Revised:2004-09-17 Online:2005-03-02 Published:2005-03-02
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60307001).

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摘要： Photochromic characteristics and optical molecular reorientation in conducting polymer such as polyaniline derivatives containing photochromic azobenzene moieties (PAPNPAPOA) in side chain are studied. Changes in the UV—vis absorption, refractive index, thickness, contact angle and morphology of these films after irradiation of a linearly polarized light with a wavelength of 365nm are measured. The trans-cis isomerization of PAPNPAPOA is proved irreversible even after withdrawing the UV light for a long time. That the structure of main-chain attends by the trans-cis isomerization of side-chain is confirmed by the absorption and the solution colour during the UV irradiation. These effects are discussed by taking the trans-cis isomerization of azobenzene into consideration.

关键词: polyaniline derivatives, photochromic azobenzene, trans-cis isomerization, conducting polymer

Abstract: Photochromic characteristics and optical molecular reorientation in conducting polymer such as polyaniline derivatives containing photochromic azobenzene moieties (PAPNPAPOA) in side chain are studied. Changes in the UV—vis absorption, refractive index, thickness, contact angle and morphology of these films after irradiation of a linearly polarized light with a wavelength of 365nm are measured. The trans-cis isomerization of PAPNPAPOA is proved irreversible even after withdrawing the UV light for a long time. That the structure of main-chain attends by the trans-cis isomerization of side-chain is confirmed by the absorption and the solution colour during the UV irradiation. These effects are discussed by taking the trans-cis isomerization of azobenzene into consideration.

Key words: polyaniline derivatives, photochromic azobenzene, trans-cis isomerization, conducting polymer

中图分类号:  (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

  • 78.20.Ci
78.40.Me (Organic compounds and polymers) 68.55.-a (Thin film structure and morphology) 68.03.Cd (Surface tension and related phenomena) 61.80.Ba (Ultraviolet, visible, and infrared radiation effects (including laser radiation)) 61.82.Pv (Polymers, organic compounds) 82.30.Qt (Isomerization and rearrangement)