Enhancing the electrochemiluminescence of tris(2,2′-bipyridyl) ruthenium(II) by ionic surfactants

被引：38
作者：
Xu, GB
Pang, HL
Xu, B
Dong, SJ
Wong, KY [1 ]
机构：
[1] Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Kowloon, Hong Kong, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China
来源：
ANALYST | 2005年 / 130卷 / 04期
关键词：
D O I：
10.1039/b419269a
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The dependence of the electrochemiluminescence of Ru(bpy)(3)(2+) (bpy = 2,2 '- bipyridine) with tri-n-propylamine as co-reactant on the anionic surfactant SDS ( sodium dodecyl sulfate) and the cationic surfactants CTAX (CTA = cetyltrimethylammonium cation, X = bromide, chloride and hydrogensulfate) was studied. Both SDS and CTAX, at low surfactant concentrations below the critical micelle concentrations, enhance the electrochemiluminescence at a platinum working electrode. A further enhancement of the light emission intensity by bromide ions was observed when CTAB (B = bromide) was used - an overall 30-fold increase in electrochemiluminescence efficiency was obtained at a CTAB concentration of 0.08 mM. Voltammetric data support adsorption of surfactant molecules on the electrode surface as the cause of the enhancement of electrochemiluminescence by ionic surfactants.
引用
收藏
页码：541 / 544
页数：4
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