Glassy carbon electrodes modified with DNA-partly-wrapped single-walled carbon nanotubes

被引：8
|
作者：
Li, Hui-Hui [1 ]
Zhang, Zhi-Ling [1 ]
Shen, Xin-Cheng [1 ]
Zhang, Ming-Xi [1 ]
Pang, Dai-Wen [1 ]
机构：
[1] Wuhan Univ, Coll Chem & Mol Sci, State Key Lab Virol, Wuhan 430072, Peoples R China
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 11期
基金：
中国国家自然科学基金;
关键词：
DNA; carbon nanotubes; cyclic voltammetry; glassy carbon electrode; film;
D O I：
10.1016/j.elecom.2007.09.007
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
DNA-partly-wrapped single-walled carbon nanotubes (DNA-p-SWCNTs) were separated from the mixtures of calf thymus DNA and SWCNTs in solution by differential centrifugation for the first time. Average mass ratios of DNA to SWCNTs for DNA-p-SWCNTs and DNA-fully-wrapped-SWCNTs (DNA-f-SWCNTs) were determined to be 0.8 and 2.0, respectively. It has been found that DNA-p-SWCNTs could form a uniform and porous film on glassy carbon electrodes due to special structure of them, which could facilitate the electron transfer between positively-charged compounds and electrodes, and showed good enrichment capability at low ionic strength. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：2729 / 2733
页数：5
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