【作者】 李五湖； 任斌； 田中群；

【Author】 Li Wuhu,Ren Bin and Tian Zhongqun~* (Department of Chemistry,Xiamen University,Xiamen 361005)

【机构】 厦门大学固体表面物理化学国家重点实验室,化学系；

【摘要】 <正>二巯基嘧啶（简称2MP）是生物核酸中的重要组成部份,它又可以作为电镀添加剂和金属缓蚀剂,因此,研究它在金属电极表面上的吸附具有重要的意义。本文采用表面增强拉曼光谱（SERS）研究2MP在不同pH值介质中与银电极作用的行为。图1是2MP在pH=3的体系中不同电极电位下的SERS谱。从图可知,在电极电位较正的电位区间,在184cm^-1左右出现了Ag-S的伸缩振动谱峰,说明2MP是通过s原子吸附于电极表面。并且其更多还原

【Abstract】 Surface Enhenced Raman Spectroscopy(SERS) has been applied to study 2-mercapto -pymidine(2MP) adsorbed on silver electrode in solutions with different pH.It is shown that 2MP is adsorbed on silver electrode via its sulphur atom at potential positive of -0.6V and it has been electroreduced as the potential was moved more negatively in pH=3 solution.The significant changes of SERS with the pH indicate that the hydro-oligomerization of 2MP may occur at more negative potentials.更多还原