物理化学学报 >> 1994, Vol. 10 >> Issue (08): 744-749.doi: 10.3866/PKU.WHXB19940816

研究简报 上一篇    下一篇

4'-N,N-二甲氨基黄酮类衍生物的发光行为研究

汪鹏飞, 吴世康   

  1. 中国科学院感光化学研究所,北京 100101
  • 收稿日期:1993-04-17 修回日期:1993-09-13 发布日期:1994-08-15
  • 通讯作者: 吴世康

A Study on the Luminescence Behavior of 4'-Dimethylaminoflavone Derivatives

Wang Peng-Fei, Wu Shi-Kang   

  1. Institute of Photographic Chemistry,Academia Sinica,Beijing 100101
  • Received:1993-04-17 Revised:1993-09-13 Published:1994-08-15
  • Contact: Wu Shi-Kang

关键词: 黄酮, 分子内电荷转移化合物, 发光行为, 荧光寿命, 荧光量子产率, 激发态松弛过程

Abstract:

The luminescence behaviors of 4'-dimethyldrinoflavone derivarive with different structures have been studied in different conditions. Results show that the luminescence behavior depends dramatically on the solvent polarity. The reason is attributed to the different conformations in different solvents. The planar conformation is proved to be favorable to the fluorescence emission. In addition, results of viscosity-dependent luminescence property show that for compound 3 with the rigidized planar structure the luminescence behavior do not depend on the medium viscosity. But, for compound 1 and 2 the fluorescence quantum yields increase with increasing medium viscosity evidently, indicating that the rotation relaxation process of benzene ring in the molecule is very important for the nonradiative decay process of excited molecules of compounds.

Key words: Flavone, Intramolecular charge transfer, Iuminescence behavior, Fluorescence quantum yield, Relaxation process of excited state, Fluorescence life time