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Electrogenerated chemiluminescence of ruthenium complex immobilized in a highly cross‐linked polymer and its analytical applications
Author(s) -
Shen Lihua,
Li Xiaoxia,
Qi Honglan,
Zhang Chengxiao
Publication year - 2008
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.1046
Subject(s) - ruthenium , electrode , chemiluminescence , detection limit , bipyridine , polymer , carbon fibers , carbon paste electrode , chemistry , materials science , inorganic chemistry , analytical chemistry (journal) , electrochemistry , catalysis , organic chemistry , cyclic voltammetry , chromatography , composite material , composite number , crystal structure
Electrogenerated chemiluminescence (ECL) of a ruthenium complex polymer modified carbon paste electrode and its analytical applications were investigated. The ruthenium complex polymer was prepared using bis(2,2‐bipyridine) (4,4‐dicarboxy‐2,2‐bipyridine) ruthenium(II). The ECL behaviours of ruthenium complex polymer modified carbon paste electrode were investigated in the absence and presence of tripropylamine (TPA). The modified carbon paste electrode exhibited long‐term stability and fine reproducibility. The ECL intensity of the modified carbon paste electrode was linear with the concentration of TPA in the range 2.0 × 10 –6 –3.8 × 10 –3 mol/L, with a detection limit (S:N = 3) of 6 × 10 –7 mol/L. It was also found that raceanisodamine could enhance the ECL intensity of the modified electrode. The ECL intensity of the modified carbon paste electrode was linear with the concentration of raceanisodamine in the range 1.1 × 10 –5 –6.0 × 10 –4 mol/L, with a detection limit (S:N = 3) of 6 × 10 –6 mol/L. This work demonstrates that the entrapment of ruthenium complex in a highly cross‐linked polymer is a promising approach to construct an ECL modified electrode with long‐term stability and fine reproducibility. The modified electrode designed has a potential application in the ECL detector. Copyright © 2008 John Wiley & Sons, Ltd.