Enhanced Electron Transfer Rates by AC Voltammetry for Ferrocenes Attached to the End of Embedded Carbon Nanofiber Nanoelectrode Arrays

被引：8

作者：

Syed, Lateef U. ^{[1
]}

Liu, Jianwei ^{[1
]}

Prior, Allan M. ^{[1
]}

Hua, Duy H. ^{[1
]}

Li, Jun ^{[1
]}

机构：

[1] Kansas State Univ, Dept Chem, Manhattan, KS 66506 USA

来源：

ELECTROANALYSIS | 2011年 / 23卷 / 07期

基金：

美国国家科学基金会;

关键词：

Biosensors; Electron transfer rate; Microstructural electrical network; Nanoelectrode array; Vertically aligned carbon nanofibers; FABRICATION; MONOLAYERS; ELECTROCHEMISTRY; CAPACITANCE; EXPRESSION; BIOSENSORS; NANOTUBES; MOLECULES; ENSEMBLES; BRIDGES;

D O I：

10.1002/elan.201100088

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The effect of the interior structure of carbon nanomaterials on their electrochemical properties is not well understood. We report here the electron transfer rate (ETR) of ferrocene (Fc) molecules covalently attached to the exposed end of carbon nanofibers (CNFs) in an embedded nanoelectrode array. The ETR in normal DC voltammetry was found to be limited by the conical graphitic stacking structure interior of CNFs. AC voltammetry, however, can cope with this intrinsic materials property and provide over 100 times higher ETR, likely by a new capacitive pathway. This provides a new method for high-performance electroanalysis using CNF nanoelectrodes.

引用

页码：1709 / 1717

页数：9

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