影像科学与光化学 ›› 1999, Vol. 17 ›› Issue (4): 323-329.DOI: 10.7517/j.issn.1674-0475.1999.04.323

• 研究论文 • 上一篇    下一篇

母核结构对三碳菁染料光氧化过程的影响

钱志国1, 陈萍1, 孙树清1, 郑德水1, 李同生2   

  1. 1. 中国科学院感光化学研究所, 北京1000101;
    2. 中国科学院兰州化学物理研究所, 兰州730000
  • 收稿日期:1999-01-22 修回日期:1999-05-31 出版日期:1999-11-20 发布日期:1999-11-20
  • 通讯作者: 陈萍
  • 基金资助:
    国家自然科学基金资助项目(批准号:69848002)

THE INFLUENCE OF HETEROCYCLIC STEM NUCLEI AGAINST PHOTOOXIDATION OF TRICARBOCYANINE DYES

QIAN Zhiguo1, CHEN Ping1, SUN Shuqing1, ZHENG Desui1, LI Tongshen2   

  1. 1. Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P. R. China;
    2. Lanzhou Institute of Chemical Physics, The Chinese Academy of Sciences, Lanzhou 730000, P. R. China
  • Received:1999-01-22 Revised:1999-05-31 Online:1999-11-20 Published:1999-11-20

摘要: 本文研究三种不同母核结构的三碳菁染料在乙醇溶剂中的光氧化反应,实验中采用了近红外区光谱能量分布平稳的光源,得出了母核结构对染料的光氧化稳定的影响,其影响次序:叮恶唑>硒唑>噻唑。同时本文还利用β值的测定,算出染料光氧化过程中敏化产生的单重态氧的浓度以及二者反应的速率常数。

关键词: 菁染料, 光氧化, 单重态氧

Abstract: In this paper the photo-oxidation of cyanine dyes with different typical structures in ethanol solution has been studied. It was showed that the structure of the cyanine dye acted an important role in photooxidation and photostability of dyes. Photostability of dyes, with three typical structures, was in such order: benzoxazol>benselenazole>benzothiazole. It also indicated that the spectral energy distribution of the light source had some effects on photo oxidation. The concentration of singlet oxygen, which was produced by dye photosensitized, could be worked out by the β value, as well as the photooxidetion rate constants of dyes.

Key words: cyanine dye, photooxidation, singlet oxygen