Potential control of DNA self-assembly on gold electrode

被引：3
|
作者：
Ge, CW [1 ]
Tan, YB [1 ]
Liao, JH [1 ]
Zhang, Y [1 ]
Zhang, HQ [1 ]
Gu, N [1 ]
机构：
[1] Southeast Univ, Natl Key Lab Mol & Biomol Elect, Nanjing 210096, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2002年 / 47卷 / 05期
基金：
中国国家自然科学基金;
关键词：
DNA self-assembly; controlled potential; DNA-based device; gold electrode;
D O I：
10.1360/02tb9087
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The self-assembly monolayer (SAM) was prepared with 2-aminoethanethiol (AET) on the gold electrode. A new approach based on potential was first used to control DNA self-assembly covalently onto the SAM with the activation of 1-ethyl-3(3-dimethylaminopropyl)-carbodiimide (EDC) and N-hydroxysulfosuccinimide (NHS). The influence of potential on DNA self-assembly was investigated by means of cyclic voltammetry (CV), AC impedance, Auger electron spectrometry (AES) and atomic force microscopy (AFM). The result proves that controlled potential can affect the course of DNA self-assembly. More negative potential can restrain the DNA self-assembly, while more positive potential can accelerate the DNA self-assembly, which is of great significance for the control of DNA self-assembly and will find wide application in the field of DNA-based devices.
引用
收藏
页码：370 / 375
页数：6
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