高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (5): 756.

• 论文 • 上一篇    下一篇

具有不同限制结构的N,N-二甲基氨基烯酮类化合物的非辐射衰减过程的研究

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:1994-08-31 修回日期:1995-02-26 出版日期:1995-05-24 发布日期:1995-05-24
  • 通讯作者: 吴世康
  • 作者简介:汪鹏飞,男,30岁,博士,助研.
  • 基金资助:

    国家自然科学基金

A Study of the Nonradiative Decay Process of N,N-Dimethylamino Enone Derivatives with Different Limited Structures

WANG Peng-Fei, WU Shi-Kang   

  1. Institute of Photographic Chemistry, Academia Sinica, Beijing, 100101
  • Received:1994-08-31 Revised:1995-02-26 Online:1995-05-24 Published:1995-05-24

摘要: 研究了具有不同限制结构的N,N-二甲氨基烯酮类化合物的非辐射衰变过程。通过研究这类化合物在不同温度下的荧光量子产率与温度的关系,计算出表现活化能;结果表明,对于不同受阻结构的各化合物,在不同极性和不同粘度的介质条件下具有不同的非辐射机制。在非极性溶剂中,其非辐射机制主要是由nπ*-ππ*相互作用引起的分子内转换;而在高粘度极性溶剂中,分子内旋转损耗是主要的非辐射衰减机制。

关键词: N, N-二甲基氨基烯酮类化合物, 非辐射衰减过程, 荧光量子产率, 分子内电荷转移

Abstract: In this work, the nonradiative decay process of several N,N-dimethylamino enone derivatives with different limited structures as the electron donating group has been studied in different viscosities and at different temperatures. The variation of nonradiative decay pro cess has been observed in the media with different viscosities and polarities. In nonpolar me dia with lower viscosity,the nonradiative decay is mainly caused by the internal conversion of nπ*-ππ*interaction.Whereas in polar media with high viscosity,the internal rotation loss is the majorly nonradiative decay process.

Key words: N,N-dimethylamino enone derivatives, Nonradiative decay process, Fluo recsence quantum yield, Intramolecular charge transfer

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