Highly Efficient Electrochemiluminescence of Functionalized Tris(2,2′‐bipyridyl)ruthenium(II) and Selective Concentration Enrichment of Its Coreactants | Zendy

Xu Y. | Zendy; Gao Y. | Zendy; Li T. | Zendy; Du Y. | Zendy; Li J. | Zendy; Wang E. | Zendy

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Highly Efficient Electrochemiluminescence of Functionalized Tris(2,2′‐bipyridyl)ruthenium(II) and Selective Concentration Enrichment of Its Coreactants

Author(s) -

Xu Y.,

Gao Y.,

Li T.,

Du Y.,

Li J.,

Wang E.

Publication year - 2007

Publication title -

advanced functional materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 6.069

H-Index - 322

eISSN - 1616-3028

pISSN - 1616-301X

DOI - 10.1002/adfm.200600537

Subject(s) - electrochemiluminescence , ruthenium , ionic liquid , indium tin oxide , electrode , glassy carbon , materials science , inorganic chemistry , ruthenium oxide , tetrafluoroborate , tris , adsorption , surface modification , electrochemistry , catalysis , chemistry , cyclic voltammetry , organic chemistry , biochemistry

An enhanced electrochemiluminescence (ECL) efficiency is obtained from the ruthenium complex tris(2,2′‐bipyridyl)ruthenium(II) (Ru(bpy) 3 2+ ) by introduction of an ionic liquid (IL) 1‐butyl‐3‐methylimidazolium tetrafluoroborate (BMImBF 4 ). Upon addition of 1 % (v/v) BMImBF 4 to 0.1 m M Ru(bpy) 3 2+ solution, a maximum increase in ECL intensity is obtained both at an indium tin oxide (ITO) electrode (15‐fold) and at a glassy carbon (GC) electrode (5‐ to 6‐fold). Furthermore, upon addition of 1 % (v/v) BMImBF 4 to 5 μ M Ru(bpy) 3 2+ /100 m M co‐reactant systems at a GC electrode, IL adsorption occurs at the electrode surface, which results in a change of the polarity of the electrode surface. Such functionalization greatly improves the functions of both Ru(bpy) 3 2+ and ionic liquids, as is demonstrated in the sensitive and selective concentration enrichment of the Ru(bpy) 3 2+ co‐reactants.

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