高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (4): 562.

• 论文 • 上一篇    下一篇

苊酮对二氰蒽的电子转移荧光猝灭研究──激基络合物的形成机理与动力学

吴树屏1, 江致勤1, 叶建平2   

  1. 1. 同济大学化学系, 上海 200092;
    2. 中国科学院感光化学研究所光化学开放实验室
  • 收稿日期:1995-03-28 出版日期:1996-04-24 发布日期:1996-04-24
  • 通讯作者: 吴树屏,女,55岁,博士,副教授.
  • 作者简介:吴树屏,女,55岁,博士,副教授.
  • 基金资助:

    国家自然科学基金

A Study on Fluorescence Quenching of Dicyanoanthracene by Acenaphthenone via Electron Transfer──Formation Machanism of Exciplex and Its Kinetics

WU Shu-Ping1, JIANG Zhi-Qin1, YE Jian-Ping2   

  1. 1. Department of Chemistry, Tongji University, Shanghai 200092;
    2. Laboratory of Photochemistry, Institute of Photographic Chemistry, The Chinese Academy of Science
  • Received:1995-03-28 Online:1996-04-24 Published:1996-04-24

PDF (PC)

被引次数

2

摘要： 研究了苊酮(ANO)对9,10-二氰蒽(DCA)的荧光猝灭与激基络合物形成的动力学与机理。基于瞬态荧光双指数衰减,测定了激基络合物的光化学动力学和有关速度常数,论证荧光猝灭作用主要由ANO/DCA激基络合物的生成以及快速正向电子转移所致。

关键词: 荧光猝灭, 激基络合物, 光诱导电子转移机理, 动力学

Abstract: The kinetics and mechanism of exciplex formation of 9,10-dicyanoanthracene(DCA)by acenaphthenone(ANO) have been studied.The photokinetics of exciplex(ANO/DCA) was determined with transient single-photon counting technique.The measured rateconstants based on biexponential decay reveal that the forward electron transfer(ET) proceeds much faster than the reverse ETand other decay processes while ANOacts as an electron donor.In addition, the diffusion-controlled steady-state fluorescence quenching is mainly caused by ANO/DCAexciplex formation via photoinduced ET.

Key words: Fluorescence quenching, Exciplex, Pliotoinduced electron transfer mechanism, Kinetics

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