MICRORING ELECTRODE OPTICAL WAVE-GUIDE - ELECTROCHEMICAL CHARACTERIZATION AND APPLICATION TO ELECTROGENERATED CHEMILUMINESCENCE

被引：51

作者：

KUHN, LS ^{[1
]}

WEBER, A ^{[1
]}

WEBER, SG ^{[1
]}

机构：

[1] UNIV PITTSBURGH, DEPT CHEM, PITTSBURGH, PA 15260 USA

来源：

ANALYTICAL CHEMISTRY | 1990年 / 62卷 / 15期

关键词：

D O I：

10.1021/ac00214a019

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel optoelectrochemical microprobe has been developed that allows the combination of optical and electrochemical methods in a very small system. The key element is a goldcoated optical fiber polished to a flat surface, such that the gold forms a microring electrode surrounding the optical fiber. The electrochemistry of the microring has been characterized; cyclic voltammetric and chronoamperometric limiting currents agree well with published theoretical treatments. The probe has also been used for electrogenerated chemiluminescence with tris(2, 2'-bypyridine)ruthenium(II) with persulfate in 50:50 MeCN:H2O. Detection limits of 4.3 X 10−8 M Ru(bpy)32+ have been obtained. © 1990, American Chemical Society. All rights reserved.

引用

页码：1631 / 1636

页数：6

共 31 条

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