Coadsorption of Adenine and Thymine on Au(111) Electrode
- VernacularTitle:碱基腺嘌呤与胸腺嘧啶在Au(111)电极上的共吸附
- Author:
Sanhua WU
;
Yingming XU
;
Bailin ZHANG
- Publication Type:Journal Article
- Keywords:
Electrochemical scanning tunneling microscopy;
adenine;
thymine;
coadsorption;
Au(111)
- From:
Chinese Journal of Analytical Chemistry
2009;37(11):1671-1674
- CountryChina
- Language:Chinese
-
Abstract:
The coadsorption behavior of two complementary DNA bases,adenine(A) and thymine(T),was studied on Au(111) electrode by cyclic voltammetry(CV) and electrochemical scanning tunneling microscopy ( ECSTM) in aqueous solution. From the CVs,the coadsorption behavior of A and T was more closed to the adsorption behavior of A. In the potential range of physisorption,high- resolution ECSTM images of revealed that a new super-structure was formed by the hydrogen bonds between A and T. A molecular model of the super-structure was proposed based on the STM results and the possible hydrogen bonds between A and T.
