高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (4): 498.

• 论文 • 上一篇    下一篇

7-氮吲哚二体激发态双质子转移的量子化学研究

滕启文, 封继康, 徐文国, 李志儒   

  1. 吉林大学化学系, 长春, 130021
  • 收稿日期:1991-02-21 出版日期:1992-04-24 发布日期:1992-04-24
  • 通讯作者: 封继康
  • 基金资助:

    国家自然科学基金

Quantum Chemical Study of Excited State Double Proton Transfer of the 7-Azaindole Dimer

TENG Qi-wen, FENG Ji-kang, XU Wen-guo, LI Zhi-ru   

  1. Department of Chemistry, Jilin University, Changchun, 130021
  • Received:1991-02-21 Online:1992-04-24 Published:1992-04-24

摘要: 用AMl和INDO/CI方法研究了7-氮吲哚二体激发态双质子转移反应的位能面和机理,异构二体虽存在较强的分子内氢键,但基态时正常二体的能量仍比异构二体低,光照时正常二体可通过激发态质子转移变为异构二体,这是其荧光产生反常Stokes位移的原因。

关键词: 7-氮吲哚二体, 激发态质子转移, AM1和INDO/CI方法

Abstract: Using AM1 and INDO/CImethods, the potential energy surface and mechanism of double proton transfer of excited state of 7-azaindole dimer have been studied.In ground state, the energy of normal dimer is lower than that of the tautomer, although the stronger intramolec-.ular hydrogen-bonds exist in the tautomer.Under the condition of photo-emission, the normal dimer can be turned into the tautomer through two proton transfer of excited state, which causes the abnormal stokes shift of the fluorescence.

Key words: 7-Azaindole dimer, Excited state proton transfer, AM1 and INDO/CI methods

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