Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27578
Title: Enhancing the electrochemiluminescence of tris(2, 2′-bipyridyl) ruthenium(II) by ionic surfactants
Authors: Xu, G
Pang, HL
Xu, B
Dong, S
Wong, KY 
Issue Date: 2005
Source: Analyst, 2005, v. 130, no. 4, p. 541-544 How to cite?
Journal: Analyst 
Abstract: 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.
URI: http://hdl.handle.net/10397/27578
ISSN: 0003-2654
DOI: 10.1039/b419269a
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