Substrate selectivity of an electrochemiluminescence Pt electrode coated with a Ru(bpy)32+-modified chitosan silica gel membrane

被引：18

作者：

Zhao, CZ ^{[1
]}

Egashira, N ^{[1
]}

Kurauchi, Y ^{[1
]}

Ohga, K ^{[1
]}

机构：

[1] Oita Univ, Fac Engn, Dept Appl Chem, Oita 87011, Japan

来源：

ANALYTICAL SCIENCES | 1997年 / 13卷

关键词：

electrochemiluminescence; tris(2,2 '-bipyridine)ruthenium(II); modified electrode; chitosan; silica gel;

D O I：

10.2116/analsci.13.Supplement_333

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The substrate selectivity of the known Ru(bpy)(3)(2+) electrochemiluminescence (ECL) is changed by coating a Pt working electrode with a Ru(bpy)(3)(2+)-modified chitosan membrane and successively with a silica gel membrane that was prepared by the sol-gel method using tetramethoxysilane as a precursor. The double coating resulted in a high selectivity toward oxalic acid at pH 6.8, lowering relative ECL responses to trimethylamine, proline and 4-hydroxyproline about 2.8, 3.4 and 3.8 times, respectively, compared to those obtained with a Pt electrode coated singly with the modified chitosan.

引用

页码：333 / 336

页数：4