Fiorani Andrea, Valenti Giovanni, Paolucci Francesco, Einaga Yasuaki
Department of Chemistry, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan.
Phys Chem Chem Phys. 2020 Jul 21;22(27):15413-15417. doi: 10.1039/d0cp02005b. Epub 2020 Jun 30.
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 with pH variation. Relative quantification of the electrogenerated chemiluminescence was achieved using the Ru(bpy)/tri-n-propylamine system, taken as a reference, with relative emission as low as 600 and 230 times that observed at the same coreactant concentration and the same pH, respectively. The kinetics was investigated by foot of the wave analysis of cyclic voltammetry to measure the turnover frequency of the reaction.
在这项工作中，我们从发射强度和反应速率方面，对电生成的三（联吡啶）钌（III）与氢氧根离子反应产生的电化学发光进行了量化。研究了不同电极材料（玻碳和硼掺杂金刚石）以及不同支持电解质（高氯酸盐、磷酸盐和碳酸盐）随pH值变化的情况。以Ru(bpy)/三正丙胺体系为参考，实现了电化学发光的相对量化，在相同共反应物浓度和相同pH值下，其相对发射分别低至观察值的600倍和230倍。通过循环伏安法的波底分析研究动力学，以测量反应的周转频率。
