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Enhanced electrochemiluminescence of Ru(bpy) 3 2+ by flavone compounds
Author(s) -
Lin Zhenyu,
Chen Jinhua,
Chen Guonan
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.1045
Subject(s) - electrochemiluminescence , chemistry , ruthenium , radiochemistry , nuclear chemistry , inorganic chemistry , electrode , organic chemistry , catalysis
Flavones such as morin, rutin, quercitrin, quercetin and wogonin were found to be able to strongly enhance the electrochemiluminescence (ECL) of the Ru(bpy) 3 2+ system. Based on this, a novel ECL method with good stability and reproducibility could be developed for determination of flavones. Under the optimum conditions, the enhanced ECL intensity was linear with the flavones concentration in a wide range. The detection limits (defined as S:N = 3) for morin, rutin, quercitrin, quercetin and wogonin were 3.2 × 10 –7 mol/L, 4.3 × 10 –7 , 1.8 × 10 –7 , 8.0 × 10 –8 and 1.0 × 10 –7 mol/L, respectively. In addition, the possible mechanism for the Ru(bpy) 3 2+ ECL system in the presence of flavones is also discussed. Copyright © 2008 John Wiley & Sons, Ltd.