Premium
Study on Electrochemiluminesce of Ru(bpy 3 ) 2+ Immobilized in a Titania Sol‐Gel Membrane
Author(s) -
Zhuang Yafeng,
Ju Huangxian
Publication year - 2004
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200302953
Subject(s) - oxalate , chemiluminescence , ruthenium , chemistry , inorganic chemistry , electrochemiluminescence , electrode , glassy carbon , electrochemistry , membrane , nuclear chemistry , cyclic voltammetry , catalysis , chromatography , organic chemistry , biochemistry
Abstract The immobilization of tris(2,2′‐bipyridyl)ruthenium(II), Ru(bpy) 3 2+ , at a glassy carbon electrode was achieved by entrapping the Ru(bpy) 3 2+ in a vapor deposited titania sol‐gel membrane. The electrogenerated chemiluminescence (ECL) of the immobilized Ru(bpy) 3 2+ was studied. The Ru(bpy) 3 2+ modified electrode showed a fast ECL response to both oxalate and proline. The ECL intensity was linearly related to concentrations of oxalate and proline over the ranges from 20 to 700 μmol L −1 and 20 to 600 μmol L −1 , respectively. The detection limits for oxalate and proline at 3σ were 5.0 μmol L −1 and 4.0 μmol L −1 , respectively. This electrode possessed good precision and stability for oxalate and proline determinations. The electrogenerated chemiluminescence mechanism of proline system was discussed. This work provided a new way for the immobilization of Ru(bpy) 3 2+ and the application of titania sol‐gel membrane in electrogenerated chemiluminescence.