Signal enhancement for electrochemical detection at glassy carbon electrode modified with phenyl layer

被引：11

作者：

Hong, HG ^{[1
]}

Porter, MD

机构：

[1] Seoul Natl Univ, Dept Chem Educ, Seoul 151742, South Korea

[2] Iowa State Univ, Dept Chem, USDOE, Ames Lab,Microanalyt Instrumentat Ctr, Ames, IA 50011 USA

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2005年 / 578卷 / 01期

关键词：

signal enhancement; phenyl-modified glassy carbon electrode; cyclic voltammetry; inhibition; electron transfer;

D O I：

10.1016/j.jelechem.2004.12.027

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Glassy carbon (GC) electrode was modified with phenyl layer using electrochemical reduction of benzenediazonium tetrafluoroborate. The phenyl layer on GC inhibits direct electron transfer of ferrocyanide but allows for facile electrode kinetics of hydroxymethylferrocene (HMF) in solution-phase. Based on this selective electrochemical discrimination of phenyl layer, a voltammetric signal enhancement for the detection of HMF was studied at phenyl-modified GC electrode in phosphate buffer (PH = 7.2) solution containing ferrocyanide as a sacrificial species. The current amplification ratio (R) was found to be linear to the ferrocyanide concentration ranging from 0. 1 to 10 mM. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：113 / 119

页数：7

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