高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (7): 1074.

• 论文 • 上一篇    下一篇

非共轭双发色团体系的光化学(Ⅱ)──长链双香豆素的光环化反应和荧光光谱研究

杜大明1, 王永梅1, 孟继本1, 周秀中1, 王国昌2, 梁丽君2, 高焕2   

  1. 1. 南开大学化学系, 天津 300071;
    2. 南开大学吸附分离高分子材料国家重点实验室, 高分子化学研究所
  • 收稿日期:1995-06-21 出版日期:1996-07-24 发布日期:1996-07-24
  • 通讯作者: 孟继本
  • 作者简介:杜大明,男,28岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Photochemistry of Nonconjugated Bichromophoric Systems (Ⅱ)──Photocyclization Reaction and Fluorescence Spectra Studies of Long Chain Biscoumarins

DU Da-Ming1, WANG Yong-Mei1, MENG Ji-Ben1, ZHOU Xiu-Zhong1, WANG Guo-Chang2, LIANG Li-Jun2, GAO Huan2   

  1. 1. Department of Chemistry, Nankai University, Tianjin 300071;
    2. State Laboratory of Functional Polymtr Materials for Adsorption and Separation, Institute of Polymer Chemistry, Nankai University
  • Received:1995-06-21 Online:1996-07-24 Published:1996-07-24

摘要: 报道双(4-甲基-7-香豆素基)氧乙酸多亚甲基二醇酯的合成、光环化反应和荧光光谱研究。结果表明,双(4-甲基-7-香豆素基)氧乙酸多亚甲基二醇酯在氯仿溶液中于光照下生成分子内环化产物,环化产物的产率随着链长的增加而逐渐降低,这与荧光光谱中观察到的相对荧光强度随链长增加而增大的整体趋势一致。

关键词: 合成, 光环化, 荧光光谱, 香豆素

Abstract: Aseries of polymethylene bis(4-methyl-7-coumarinyl)oxyacetates have been synthesized and their photochemical reaction and fluorescence spectra have been studied.It was found that only intramolecular photocyclization products were obtained when polymethylene bis(4-methyl-7-coumarinyl)oxyacetates were directly irradiated in chloroform.The yields of the products decreased with the increase of methylene chain lengths, and this result accords with the phenomena found in the fluorescence spectra,i.e.,the relative fluorescence intensity increased with the increase of methylene chain length.

Key words: Synthesis, photocyclization, Fluorescence spectra, Coumarin

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