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| Title
| - Electrochemiluminescent Behavior of Tris(2,2-bipyridine) Ruthenium(II)/Triethylamine in Ionic Liquid Solution
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| Abstract
| - The electrochemiluminescence (ECL) behaviors of tris(2,2-bipyridine)ruthenium(II)/triethylamine (Ru(bpy)32+/TEA) in 1-butyl-3-methylimidazolium hexafluorophosphate (BMIPF6) ionic liquid were investigated and compared with those in aqueous solution (pH 7.0 PBS) at a gold electrode. It was found that the Ru(bpy)32+/TEA system gave rise to one small and one large peak ECL peak at anodic process. The small anodic ECL peak observed around +0.90 V is due to the direct electrochemical oxidation of TEA at the gold electrode and further chemiluminescent reaction of its oxidative product with Ru(bpy)32+. The large anodic ECL peak found around +1.35 V results from the reversible electrochemical oxidation of Ru(bpy)32+ coupled with a slow following reaction of TEA with Ru(bpy)33+. The effects of viscosity and ionic strength of ionic liquid on diffusion coefficients, catalytic efficiency, and ECL intensity were investigated and discussed to reveal the ECL mechanism of Ru(bpy)32+/TEA system in the ionic liquid of BMIPF6.
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| Alternative Title
| - Tris(2,2-bipyridinerethenium(II)/Triethylamine
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