用Na_2O_2－DMSO体系产生的ESR研究  

ESR STUDY ON THE FORMATION OF SUPEROXIDE RADICAL ANIONS BY Na_2O_2-DMSO SYSTEM

作　　者：冯亚非[1] 陈德余[1] 徐元植[1] 何玲[1] 

机构地区：[1]浙江大学化学系

出　　处：《波谱学杂志》1995年第2期185-193,共9页Chinese Journal of Magnetic Resonance

基　　金：浙江省自然科学基金;浙江省分析测试基金

摘　　要：提出了Ｎａ＿２Ｏ＿２的二甲基亚砜（ＤＭｓＯ）／Ｈ＿２Ｏ溶液中产生超氧阴离子自由基（Ｏ）的新方法，用电子自旋共振仪（ＥＳＲ）可直接检测到很强的Ｏ信号，研究了反应的条件及其Ｏ信号的特性，并用该法考察了茶多酚等清除剂对于超氧阴离子自由基的清除作用。结果表明本体系是产生Ｏ的有效方法，可用于超氧阴离子自由基清除剂的研究。A new method that the O was produeed by Na_2O_2 in DMSO/H_2O has been re-ported in this paper． The visible O signal can be directly detected by ESR. Theconditions of the reaction and．characterization of O signal were studied． Scavengingeffect of superoxide anion was investigated with tea polyphenols etc. It is shown thatthis is an advisable method to produce O radical and could be used to look for thenew O scavenger.

关 键 词：超氧阴离子 自由基 自由基清除剂 

分 类 号：O621.146[理学—有机化学] O482.53[理学—化学]