高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (5): 895.

• 论文 • 上一篇    下一篇

2-芳基丙硅烷的光化学反应机理

刘成有, 闫锡杰, 高玉祥, 田贵才   

  1. 通化师范学院物理系, 通化 134002
  • 收稿日期:2002-04-08 出版日期:2003-05-24 发布日期:2003-05-24
  • 通讯作者: 刘成有(1959年出生),男,教授,从事非线性光学及光化学研究.
  • 基金资助:

    吉林省教育厅基金

Photochemical Reaction Mechanism of 2-Aryltrisilanes

LIU Cheng-You, YAN Xi-Jie, GAO Yu-Xiang, TIAN Gui-Cai   

  1. Department of Physics, Tonghua Teacher College, Tonghua 134002, China
  • Received:2002-04-08 Online:2003-05-24 Published:2003-05-24

PDF (PC)

被引次数

2

摘要： 从理论及实验上研究了2-芳基丙硅烷(1)的光物理及光化学特性.结果表明,在极性溶液中观察到的强荧光带来源于分子内电荷转移(ICT);在非极性溶液中,化合物1的光化学反应产物为亚甲硅基并伴随着1,3-甲硅烷基的迁移;而在乙醇-己烷溶液中,光化学反应主要导致Si-Si键的裂解,通过研究光化学反应与温度的关系可确认,亚甲硅基与1,3-甲硅烷基的迁移来源于化合物1的不同电子激发态,非谐振双光子光化学反应(NRTP)结果表明,亚甲硅基迁移来源于化合物1的La电子态.

关键词: 2-芳香基丙硅烷, 分子内电荷转移, 非谐振双光子光化学反应

Abstract: The photophysical and photochemical properties of 2-aryltrisilanes (1) was investigated via theory and experiment. The intense fluorescene band of compound 1 was assigned to the intramolecular charge-transfer (ICT) in a polar solvent. Whereas silylene extrusion and 1,3-silyl migration were the major pho-toreactions of compound 1 resulted from the solvolytic cleavage of the Si-Si bond. The temperature dependence of the products distribution suggested that both the silylene extrusion and 1,3-silyl migration came from the different excited states. The results of the photochemical reaction of compund 1 using a nonresonant two-photo(NRTP) excitation show that the silylene extrusion occurs via the 1Lastate.

Key words: 2-Aryltrisilanes, Intramolecular charge-transfer (ICT), Nonresonant two-photon photoreac- tion(NRTP)

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