物理化学学报 >> 1999, Vol. 15 >> Issue (06): 550-554.doi: 10.3866/PKU.WHXB19990613

研究简报 上一篇    下一篇

香豆素酮染料光谱性质的研究

高放, 杨永源   

  1. 中国科学院感光化学研究所,北京 100101
  • 收稿日期:1998-07-02 修回日期:1998-09-14 发布日期:1999-06-15
  • 通讯作者: 高放

Spectra Studies of Ketocoumarin Dye

Gao Fang, Yang Yong-Yuan   

  1. Institute of Photographic Chemistry,Chinese Academy of Sciences,Beijing 100101
  • Received:1998-07-02 Revised:1998-09-14 Published:1999-06-15
  • Contact: Gao Fang

关键词: 分质子传递溶剂效应, 香豆素酮染料, 光谱, 荧光量子产率

Abstract:

Ketocoumarin dye 3-acetyl-7-diethylaminecoumrin was synthesized and charaterized. The spectra and photophysics behavior were studied in different aprotic solvents. Results showed that the fluorescence quantum yield had a maximum and the ratio of non-radiative transition rate to radiative transition rate had a minimum with the increasing of the solvent polarity. Also, the fluorescence of the dye can be quenched by triethylamine and the change is in accordance with the Stern-Volmer formula. These phenomenon was discussed preliminarily.

Key words: Aprotic solvent effect, Ketocoumarin dye, Spectrum, Fluorescence quantum yield