Electrocatalytic Oxidation of Dopamine by Ferrocene in Lipid Film Cast on a Glassy Carbon Electrode  

作　　者：王建国 吴正岩 唐纪琳 滕人瑞 汪尔康 

出　　处：《Chinese Journal of Chemistry》2002年第2期147-152,共6页中国化学（英文版）

基　　金：theNationalNaturalScienceFoundationofChina (No.2 9835 12 0 )

摘　　要：The ferrocene-lipid film electrode was successfully prepared by means ofcasting the solution of ferrocene and lipid in chloroform onto a glassy carbon (GC) electrodesurface. Ferrocene saved in the biological membrane gave a couple of quasi-reversible peaks ofcyclic voltammogram. The electrode displays a preferential electrocatalytic oxidation of dopamine(DA). The effect of electrocatalytic oxidation of DA depends on the solution pH and the negativecharge lipid is in favor of catalytic oxidation of DA. The characteristic was employed forseparating the electrochemical responses of DA and ascorbic acid (AA). The electrode was assessedfor the voltammetric differentiation of DA and AA. The measurement of DA can be achieved withdifferential pulse voltammetry in the presence of high concentration of AA. The catalytic peakcurrent was proportional to the concentration of DA in the range of 1 x 10^(-4)―3x10^(-3) mol/L.The ferrocene-lipid film electrode was successfully prepared by means ofcasting the solution of ferrocene and lipid in chloroform onto a glassy carbon (GC) electrodesurface. Ferrocene saved in the biological membrane gave a couple of quasi-reversible peaks ofcyclic voltammogram. The electrode displays a preferential electrocatalytic oxidation of dopamine(DA). The effect of electrocatalytic oxidation of DA depends on the solution pH and the negativecharge lipid is in favor of catalytic oxidation of DA. The characteristic was employed forseparating the electrochemical responses of DA and ascorbic acid (AA). The electrode was assessedfor the voltammetric differentiation of DA and AA. The measurement of DA can be achieved withdifferential pulse voltammetry in the presence of high concentration of AA. The catalytic peakcurrent was proportional to the concentration of DA in the range of 1 x 10^(-4)―3x10^(-3) mol/L.

关 键 词：ascorbic acid DOPAMINE FERROCENE dimyristo-rylphosphatidylcholine LIPID cast film 

分 类 号：O646[理学—物理化学]