The Electrochemical Properties of Thionine Adsorbed Monolayer on Gold Electrode

作     者：Fang Cheng, Liu Yue lin, Zhou Xing yao  College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China 

作者机构：Wuhan University College of Chemistry and Molecular Science Wuhan China (GRID:grid.49470.3e) (ISNI:***) 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2001年第6卷第4期

页      面：846-850页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

主　　题：Key words thionine monolayer ac impedance voltammetry 

摘      要：A gold electrode modified with adsorbed thionine monolayer was investigated with ac impedance and cyclic voltammetry method. It was found there were some different redox properties for the adsorbed thionine depended on the different potential scanning rate. At the slower potential scanning rate (10 mV? s?1), the dimer of thionine appeared and possessed the catalytic activity for the oxidation of ascorbic acid. The underpotential deposition (UPD) and the bulk deposition of Cu2+ were also employed to investigate the monolayer of adsorbed thionine.