【作者】 田秋； 陈次平； 何光龙； 简华华； 徐广智；

【Author】 Qiu Tian~1 Ciping Chen~2 Guanglong He~1 Huahua Jian~1 Guangzhi Xu~1 1:Institute of Chemistry,the Chinese Academy of Sciences,Beijing 100080 2:Institute of Photographic Chemistry,the Chinese Academy of Sciences,Beijing 100101

【机构】 中国科学院化学研究所； 中国科学院感光化学研究所；

【摘要】 <正>用时间分辨ESR方法研究了吩噻嗪（PTH）-1,4-萘醌（NQ）-乙二醇（RH）体系中的光化学过程.只观察到萘醌的中性半醌自由基NQH^-*的全发射极化的CIDEP（化学诱导动态极化）信号,并未观察到极化的萘醌负离子NQ^?的CIDEP信号,表明RH更多还原

【Abstract】 The photoinduced hydrogen transfering reaction in phenothiazine/ 1,4-naphthoquinone/ethylene glycol system has been investigated by time-resolved electron spin resonance technique.From the measured emission CIDEP signals of neutral 1,4-naphtho-semiqinone radical NQH^·*,it is concluded that the rate of hydrogen transfering reaction between ethylene glycol and 1,4-naphthoquinone is much faster than the rate of electron transfering reaction between phenothiazine and 1,4- naphthoquinone.The broadening CIDEP spectra obtained in acidic solution of 1,4-naphthoquinone/ethylene glycol systems indicate that a fast proton exchange process must exist between the spin polarized radicals NQH^·* and NQH₂^·+*.更多还原