细胞色素C在单糖修饰金电极上的直接电化学

Hill等发现在4,4′-联吡啶存在时,细胞色素C在金电极上能进行准可逆的电化学反应。在研究细胞色素C的直接电化学过程中,人们又发现一些生物小分子如氨基酸、嘌呤等对细胞色素C的电化学反应有促进作用,但迄今未见有关糖类分子对细胞色素C电化学反应促进作用研究的报道。本文研究了5种单糖对细胞色素C电化学反应的促进作用。

Direct Electrochemistry of Cytochrome C at Gold Electrodes Modified with Monosaccharides

The direct electrochemistry of cytoclirome C at gold electrodes modified with different monosaccharides was investigated. It was found that all the five monosaccharides studied are effective promoters for the direct electrochemistry of cytoclirome C. However, the promotion effect strongly depends on the dipping time and concentration of monosaccharides in the modification procedure of the gold electrode and the performance of the monosaccharide-modified gold electrodes is not stable because of the weak adsorption of the monosaccharide molecules on the gold surface. These results indicate that the coverage of promoter molecules on the surface of the gold electrode is an important factor to affect the promotion effect of promoters.