波谱学杂志 ›› 1998, Vol. 15 ›› Issue (3): 197-203.

• 研究论文 •    下一篇

化学诱导动态电子极化自由基-三重态对理论中选择三重态淬灭的证明

何光龙1, 陈次平2, 杨俊林1, 简华华1, 徐广智1   

  1. 1. 中国科学院化学研究所, 北京 100080;
    2. 中国科学院感光化学研究所, 北京 100101
  • 收稿日期:1998-01-19 出版日期:1998-06-05 发布日期:2018-01-13
  • 作者简介:何光龙,男,33岁,博士
  • 基金资助:
    国家自然科学基金(29773050)

THE VERIFICATION OF THE SELECTIVE TRIPLET QUENCHING IN THE RADICAL-TRIPLET PAIR MECHANISM OF CHEMICALLY INDUCED DYNAMIC ELECTRON POLARIZATION

He Guanglong1, Chen Ciping2, Yang Junlin1, Jian Huahua1, Xu Guangzhi1   

  1. 1. Institute of Chemistry, Academia Since, Beijing 100080;
    2. Institute of Photographic Chemistry, Academia Since, Beijing 100101
  • Received:1998-01-19 Online:1998-06-05 Published:2018-01-13

摘要: 用时间分辨ESR测出的吩噻嗪/2,2,6,6-四甲基哌啶氮氧自由基(TEMPO)光诱导产生的三重态发射CIDEP信号可用Blätter提出的自由基-三重态对机理来解释,由荧光光谱及脉冲激光光声微量量热实验结果直接证明了Bläter理论关于自由基只选择淬灭双重自旋态的自由基/三重态对中的三重态的假设.

关键词: 时间分辨ESR, CIDEP, 自由基-三重态对

Abstract: The CIDEP signal generated in the photochemical process in phenothiazine and 2,2,6,6-tetramethyl piperidingloxyl system can be interpreted by the radical-triplet piar mechanism(PTPM) prposed by Blätter. Furthermoce, the results obtained from fluorescence quenching and photoacoustic calorimetric measurements provide direct confirmation that the assumption of radical (TEMPO) only selective quenching the triplet in the doublet spin state of the radical-triplet pair.

Key words: TRESR, CIDEP, Radical-triplet pair mechanism