Reduced working electrode based on fullerene C60 nanotubes@DNA: Characterization and application
文献类型: 外文期刊
第一作者: Qu, Yongtao
作者: Qu, Yongtao;Piao, Guangzhe;Zhao, Jian;Zhang, Xuzhi;Jiao, Kui;Zhang, Xuzhi
作者机构:
关键词: Fullerene C(60) nanotubes@DNA;Modified electrode;Reduced working electrode;Ascorbic acid;Dopamine
期刊名称:MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS ( 影响因子:4.051; 五年影响因子:4.316 )
ISSN: 0921-5107
年卷期: 2010 年 175 卷 2 期
页码:
收录情况: SCI
摘要: Fullerene C(60) nanotubes (FNTs) were functionalized with sequence-specific single-stranded DNA to form a kind of complexes (FNT@DNA), which could be brought efficiently into aqueous solution. The dispersed FNT@DNA could form a layer of stable film on the surface of glassy carbon electrode (GCE). In the Britton-Robinson buffer solution of pH >= 7.0, the FNT@DNA modified on the GCE presented an irreversible two-step six-electron transfer reduction reaction. The reduced modified electrode had a rather wide electrochemical window and could be used as a functionalized working electrode, which showed a good enrichment capability towards the positively charged molecules. The selective detection of dopamine in the presence of a high amount of ascorbic acid could be realized at the reduced FNT@DNA-modified GCE in neutral buffer solution. (C) 2010 Elsevier B.V. All rights reserved.
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