|
|||||
|
|
Dynamic study of photosensitized one-electron oxidation of polyG by menadione |
|
| Authors: | Jianhua?Ma |
| Institution: | 1. College of Biology Engineering,Jimei University,Xiamen 361021,China 2. Laboratory of Nanobiomedicine & Laboratory of Radiation Chemistry,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China |
| Abstract: | 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. |
| Keywords: | menadione polyG laser flash photolysis triplet state one electron oxidation |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ | |