母核结构对三碳菁染料光氧化过程的影响  

THE INFLUENCE OF HETEROCYCLIC STEM NUCLEI AGAINST PHOTOOXIDATION OF TRICARBOCYANINE DYES

作　　者：钱志国[1] 陈萍[1] 孙树清[1] 郑德水[1] 李同生[2] 

机构地区：[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

出　　处：《感光科学与光化学》1999年第4期323-329,共7页Photographic Science and Photochemistry

基　　金：国家自然科学基金

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．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.

关 键 词：菁染料 光氧化 单重态氧 碳菁染料 光盘 

分 类 号：TP333.4[自动化与计算机技术—计算机系统结构] TQ587.2[自动化与计算机技术—计算机科学与技术]