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

页码：2729 / 2733

页数：5

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