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吩噻嗪/二氧化钛胶体体系光诱导自由基的研究
引用本文:简华华,刘扬,徐广智,陈次平,周本茂.吩噻嗪/二氧化钛胶体体系光诱导自由基的研究[J].波谱学杂志,1999,16(2):97-102.
作者姓名:简华华  刘扬  徐广智  陈次平  周本茂
作者单位: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
摘    要:用ESR研究了吩噻嗪(PTH)/乙二醇体系和PTH/乙二醇/TiO2(CdS,ZnO)体系中光诱导产生的自由基PTH·+,发现在前者中PTH·+是通过光电离产生的,但在后者中PTH·+除通过光电离产生外,还经1PTH*3PTH与TiO2(CdS,ZnO)间的单电子转移来形成,而且PTH·+还与TiO2(CdS,ZnO)发生进一步的单电子转移生成反磁性离子PTH2+

关 键 词:光敏剂  半导体  自由基  ESR  
收稿时间:1998-11-26

STUDY ON THE PHOTO-INDUCED FREE RADICAL IN THE SYSTEM OF PHENOTHIAZINE/TiO2
Jian Huahua,Liu Yang,Xu Guangzhi,Chen Ciping,Zhou Benmao.STUDY ON THE PHOTO-INDUCED FREE RADICAL IN THE SYSTEM OF PHENOTHIAZINE/TiO2[J].Chinese Journal of Magnetic Resonance,1999,16(2):97-102.
Authors:Jian Huahua  Liu Yang  Xu Guangzhi  Chen Ciping  Zhou Benmao
Institution:1.Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080;2.Institute of Photochemical Sciences, Chinese Academy of Sciences, Beijing 100101
Abstract:The free radical PTH\5\ photo induced in the system of phenothiazine(PTH)/TiO\-2 has been studied by ESR. In the system of PTH/RH, the PTH\5\ is produced by photoionization of PTH. On the other hand, in the system of PTH/RH/TiO\-2, the PTH\5\ is generated by photo ionization of PTH, as well as by the electron transfer from the \{\}\ 1PTH\ * to the conduction band of TiO\-2. Furthermore, the diamagnetic ion PTH\ \{2 \} is also obtained by the electron transfer from the PTH\5\ to the conduction band of TiO\-2.
Keywords:ESR
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