Dynamic study of photosensitized one-electron oxidation of polyG by menadione

被引：0
作者：
Jianhua Ma
Weizhen Lin
Fuqiang Du
Zhenhui Han
Side Yao
Nianyun Lin
机构：
[1] Jimei University,College of Biology Engineering
[2] Chinese Academy of Sciences,Laboratory of Nanobiomedicine & Laboratory of Radiation Chemistry, Shanghai Institute of Applied Physics
来源：
Science in China Series B: Chemistry | 2005年 / 48卷
关键词：
menadione; polyG; laser flash photolysis; triplet state; one electron oxidation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The electron transfer reaction of triplet menadione (3MQ*) with polyguanylic acid (polyG) in CH3CN rich (97%) solution was investigated by 248 nm(KrF) laser flash photolysis. The transient absorption spectra and kinetics obtained from the interaction of 3MQ* with polyG demonstrated that the primary radical ion pair, radical cation of polyG and radical anion of menadione can be detected simultaneously. The results demonstrated that the reaction rate constant of 3MQ* with polyG is almost equal to that of 3MQ* with dGMP.
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页码：292 / 296
页数：4
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