Enhanced electrochemiluminescence of CdTe quantum dots with carbon nanotube film and its sensing of methimazole

被引：47

作者：

Hua, Lijuan ^{[1
]}

Han, Heyou ^{[1
]}

Chen, Haibo ^{[1
]}

机构：

[1] Huazhong Agr Univ, State Key Lab Agr Microbiol, Coll Sci, Wuhan 430070, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Electrochemiluminescence; Carbon nanotube; Modified electrode; CdTe quantum dots; Methiamazole; ELECTROGENERATED CHEMILUMINESCENCE; AQUEOUS-SOLUTION; MODIFIED ELECTRODES; SPHERICAL ASSEMBLIES; CDS NANOCRYSTALS; FLOW-INJECTION; NANOPARTICLES; BIOSENSOR; CARBIMAZOLE; ELECTROCHEMISTRY;

D O I：

10.1016/j.electacta.2008.08.044

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel analytical method was reported based on electrochemiluminescence (ECL) of CdTe quantum dots (QDs) using carbon nanotube (CNT) modified glass carbon (GC) electrode. It was found that the CNT film on the GC electrode could greatly enhance the ECL intensity of CdTe QDs dispersed in aqueous solution, and the ECL peak potential and ECL onset potential both shifted positively. Influences of some factors on the ECL intensity were investigated using CNT modified GC electrode, and a high sensitive method for the determination of methimazole was developed under the optimal conditions. The ECL intensity decreased linearly in the concentration range of 1.0 x 10(-9) to 4.0 x 10(-7) M for methimazole with the relative coefficient of 0.995, which showed finer sensitivity than that at bare electrode. Thus, CNT modified electrode would have a great merit to expand the application of QD ECL. (C) 2008 Published by Elsevier Ltd.

引用

页码：1389 / 1394

页数：6

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