细胞色素c在4-氨基-6-羟基-2-巯基嘧啶修饰金电极上的直接电化学行为

用循环伏安法研究细胞色素c在4-氨基-6-羟基-2-巯基嘧啶（AHMP）自组装修饰金电极上的直接电化学行为.对修饰条件进行优化,通过扫描电镜（SEM）等方法对修饰电极进行了表征.结果表明,细胞色素c在AHMP修饰金电极上能进行准可逆的电化学反应,氧化还原峰电位差（△Ep）为67mV.氧化与还原峰电流比ipa/ipe接近1,且峰电流与电位扫描速率的平方根（ν1/2）呈正比,属于扩散控制的准可逆过程,异相电子迁移速率常数（Ks）为1.93×10-4cm/s.

Direct Electrochemical Behaviors of Cytochrome c on 4-Amino-6-Hydroxy-2-Mercaptopyrimidine Modified Gold Electrode

The direct electrochemical behaviors of cytochrome c on 4-amino-6-hydroxy-2-mercaptopyrimidine （AHMP） modified gold electrode were studied with cyclic voltammetry.The modification conditions were optimized,and the AHMP modified gold electrode was characterized by scanning electron microscopy （SEM）.The results show that cytochrome c can carry out quasi-reversible electrochemical reaction on the 4-amino-6-hydroxy-2-mercaptopyrimidine modified gold electrode.The redox potential difference （ΔEp） is 67 mV,and the redox peak current ratio ipa/ipc was nearly 1.The peak current is positively correlated to the square root of potential scanning rate （v1/2）,indicating that it is a diffusion-controlled quasi-reversible process,and the heterogeneous electronmigration rate constant （Ks） is1.93×10-4cm/s.