Quantification of Electrogenerated Chemiluminescence from Tris(bipyridine)ruthenium(II) and Hydroxyl Ions

In this work, we quantify the electrogenerated chemiluminescence arising from the reaction of electrogenerated tris(bipyridine)ruthenium(III) with hydroxyl ions, in terms of emission intensity and reaction rate. Different electrode materials (glassy carbon and boron-doped diamond) and different supporting electrolytes (perchlorate, phosphate, and carbonate) were investigated under pH variation. Relative quantification of the electrogenerated chemiluminescence was proposed against the Ru(bpy)32+/tri-n-propylamine system, taken as reference, with relative emission as low as 600 and 230 times at the same coreactant concentration and the same pH, respectively. The kinetic was investigated by foot of the wave analysis of cyclic voltammetry to measure the turnover frequency of the reaction.