ZrO2 gel-derived DNA-modified electrode and the effect of lanthanide on its electron transfer behavior

被引：63

作者：

Liu, SQ ^{[1
]}

Xu, JJ ^{[1
]}

Chen, HY ^{[1
]}

机构：

[1] Nanjing Univ, Inst Analyt Sci, Dept Chem, Lab Mesoscop Mat & Chem, Nanjing 210093, Peoples R China

来源：

BIOELECTROCHEMISTRY | 2002年 / 57卷 / 02期

基金：

中国国家自然科学基金;

关键词：

DNA immobilization; zirconia gel; modified electrode; lanthanide; electron transfer;

D O I：

10.1016/S1567-5394(02)00114-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A new method of immobilizing deoxyribonucleic acid (DNA) was developed based on sol-gel technique, the resulting DNA-modified electrode was characterized with the cyclic voltammetry. The electrode was used to study the electron transfer of DNA in 1.0 mM potassium ferricyanide system in different concentrations of lanthanum(III), europium(III), and calcium(II). The heterogeneous rate constants of the)reduction of Fe(CN)(6)(3) with and without the above cations were calculated by Tafel equation. The results show that lanthanide ions can increase the electron transfer rate much more than calcium ion. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：149 / 154

页数：6

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