期刊
ADVANCED FUNCTIONAL MATERIALS
卷 17, 期 6, 页码 1003-1009出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.200600537
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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 mm 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 64old). Furthermore, upon addition of 1% (v/v) BMImBF4 to 5 pm Ru(bpy)(3)(2+)/100 mm 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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