Gating of Redox Currents at Gold Nanoelectrodes via DNA Hybridization

被引：46

作者：

Liu, Gang ^{[2
]}

Sun, Chunfeng ^{[1
]}

Li, Di ^{[2
]}

Song, Shiping ^{[2
]}

Mao, Bingwei ^{[1
]}

Fan, Chunhai ^{[2
]}

Tian, Zhongqun ^{[1
]}

机构：

[1] Xiamen Univ, State Key Lab Phys Chem & Solid Surfaces, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

[2] Chinese Acad Sci, Phys Biol Lab, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

来源：

ADVANCED MATERIALS | 2010年 / 22卷 / 19期

关键词：

SEQUENCE-SPECIFIC DETECTION; ION-CHANNEL SENSORS; FEMTOMOLAR DNA; BASE MISMATCH; ELECTRODES; NANOWIRES;

D O I：

10.1002/adma.200903590

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

DNA immobilized at the surface of cone-shaped gold nanoelectrodes provides a favorable platform for artificial ion channels that can gate the redox reaction of ferricyanide. This effect arises from the nanometer-scale curvature and the enhanced mass transfer at nanoelectrodes. The label-free feature based on this ion-channel effect provides a means to develop label-free electrochemical DNA sensors.

引用

页码：2148 / +

页数：4

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