A Theoretical and Experimental Framework for Understanding Electrogenerated Chemiluminescence (ECL) Emission at Bipolar Electrodes

被引：136

作者：

Mavre, Francois

Chow, Kwok-Fan

Sheridan, Eoin

Chang, Byoung-Yong

Crooks, John A.

Crooks, Richard M. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA

来源：

ANALYTICAL CHEMISTRY | 2009年 / 81卷 / 15期

关键词：

REDOX REACTIONS; MICROFLUIDIC SENSOR; SOLUTION INTERFACE; PHOTONIC REPORTER; FIELD; ELECTROPHORESIS; MICROARRAY; BEHAVIOR; SYSTEM;

D O I：

10.1021/ac900744p

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Bipolar electrodes are potentially useful for a variety of sensing applications, but their implementation has been hampered by an inability to easily monitor the current through such electrodes. However, current can be indirectly determined using electrogenerated chemiluminescence (ECL) as a reporting mechanism. This paper provides a detailed theoretical analysis of ECL reporting at bipolar electrodes. In addition, experiments are described that confirm the theory. Finally, we correlate ECL intensity directly to current through the use of split bipolar electrodes. The results indicate that the lowest current that can be indirectly detected through ECL reporting is similar to 32 mu A/cm(2), which corresponds to a reporting sensitivity of similar to 7200 counts/nA in the present experimental system.

引用

收藏

页码：6218 / 6225

页数：8

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