Direct electrochemistry of cytochrome c at a glassy carbon electrode modified with single-wall carbon nanotubes

被引：741

作者：

Wang, JX ^{[1
]}

Li, MX ^{[1
]}

Shi, ZJ ^{[1
]}

Li, NQ ^{[1
]}

Gu, ZN ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

来源：

ANALYTICAL CHEMISTRY | 2002年 / 74卷 / 09期

关键词：

D O I：

10.1021/ac010978u

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemistry of horse heart cytochrome c was studied by cyclic voltammetry at a glassy carbon electrode modified with single-wall carbon nanotubes (SWNTs). A pair of well-defined redox waves was obtained in cytochrome c aqueous solution at an activated SWNT film-modified electrode. The optimal conditions for activating the SWNT film-modified electrode has been determined. The electrode reaction of cytochrome e is a diffusion-controlled process. The peak current increases linearly with the concentration of cytochrome e in the range from 3.0 x 10(-5)-7.0 x 10(-4) M. The detection limit is 1.0 x 10(-5) M. The activated SWNT film was characterized by scanning electron microscopy. Furthermore, interaction of cytochrome c with adenine was characterized by electrochemical and spectral methods.

引用

页码：1993 / 1997

页数：5

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