影像科学与光化学 ›› 1994, Vol. 12 ›› Issue (4): 364-368.DOI: 10.7517/j.issn.1674-0475.1994.04.364

• 研究简报 • 上一篇    下一篇

ESR信号的衰减与超增感机理的研究

张金龙, 朱正华   

  1. 华东理工大学精细化工研究所, 上海200237
  • 收稿日期:1993-12-17 修回日期:1994-04-09 出版日期:1994-11-20 发布日期:1994-11-20
  • 通讯作者: 张金龙

STUDY ON DECAY OF ESR SIGNALS AND MECHANISMOF SUPERSENSITIZATION

ZHANG JIN-LONG, ZHU ZHENG-HUA   

  1. Research Institute of Fine Chemicals, East China University of Science and Teshnologg, Shanghai 200237, P. R. China
  • Received:1993-12-17 Revised:1994-04-09 Online:1994-11-20 Published:1994-11-20

摘要: 众所周知,超增感机理在感光化学中起着极其重要的作用,因此成为广大感光科学工作者研究的一大热点,先后提出了各自的设想。

关键词: ESR, 正穴, 衰减动力学, 超增感机理

Abstract: Used Eletron Spin Resonance technic, ESR signals of dyes’positive hole were trapped.The decay of ESR signal of positive holes trapped by cyanine dyes about sensitive systemand supersensitive system were studied, Their decay were the second-order reaction.The rate constants of the decay are k2 = 3.269 × 10-4s-1, k2= 5.589 × 10-5s-1.So, two kindsof positive holes produced by sensitive dyes and supersensitive dyes were distinguished,Gilman’s mechanism of trapping positive hole was confirmed further.

Key words: ESR, positive hole, decay kinetics, supersensitive mechanism