Study on the-Redox Process of Bilirubin and Biliverdin at Platinum Electrode by in Situ Spectroelectrochemistry  

作　　者：牛建军 董绍俊 

机构地区：[1]Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022, PRC

出　　处：《Science China Chemistry》1994年第9期1063-1072,共10页中国科学（化学英文版）

基　　金：the National Natural Science Foundation of China

摘　　要：The electrochemical redox behavior of bilirubin(BR Ⅳ_α),biliverdin(BV Ⅳ_α)and their oxidized product bile-purpurin(Bi-Pu)have been studied by in situ spectroelectrochemical techniques,which reveals that the transformation of BR Ⅳ_α■BV Ⅳ_α■Bi-Pu can be achieved by controlling poten- tials.The kinetic investigation has shown that the heterogeneous electron transfer reactions of the couples of Ⅰ/Ⅱ and Ⅳ/Ⅲ were quasi-reversible and irreversible at a clean platinum electrode with the formal heteroge- neous electron transfer rate constants 1.5×10^(-4)cm·s^(-1)and 4.8×10^(-5)cm·s^(-1),respectively.The electrochemical redox behavior of bilirubin（BR Ⅳ_α）,biliverdin（BV Ⅳ_α）and theiroxidized product bile-purpurin（Bi-Pu）have been studied by in situ spectroelectrochemical techniques,whichreveals that the transformation of BR Ⅳ_α■BV Ⅳ_α■Bi-Pu can be achieved by controlling poten-tials.The kinetic investigation has shown that the heterogeneous electron transfer reactions of the couples ofⅠ/Ⅱ and Ⅳ/Ⅲ were quasi-reversible and irreversible at a clean platinum electrode with the formal heteroge-neous electron transfer rate constants 1.5×10^-4cm·s^-1and 4.8×10^-5cm·s^-1,respectively.

关 键 词：SPECTROELECTROCHEMISTRY BILIRUBIN BILIVERDIN bile-purpurin 

分 类 号：O621.25[理学—有机化学]