Fiorani Andrea, Valenti Giovanni, Paolucci Francesco, Einaga Yasuaki
Department of Chemistry , Keio University , 3-14-1 Hiyoshi , Yokohama 223-8522 , Japan.
Department of Chemistry "G. Ciamician" , University of Bologna , Via Selmi, 2 , 40126 Bologna , Italy.
Anal Chem. 2018 Nov 6;90(21):12959-12963. doi: 10.1021/acs.analchem.8b03622. Epub 2018 Oct 23.
We report on the use of boron doped diamond electrodes for the electrochemiluminescence (ECL) of the coreactant peroxydisulfate and the luminophore ruthenium(II)-tris(2,2'-bipyridine). Compared to common electrode materials (i.e., Pt, Au, glassy carbon), boron doped diamond has a large overpotential for the evolution of hydrogen in aqueous electrolyte solutions. This intrinsic feature enables reductive-oxidation ECL with peroxydisulfate to be obtained without interference from hydrogen evolution and with high reproducible signals and stable emission. We investigated the effects of the peroxydisulfate concentration and the pH on the ECL emission to find the optimal conditions for enhancing the signal.
我们报道了硼掺杂金刚石电极用于共反应剂过二硫酸盐和发光体钌（II）-三（2,2'-联吡啶）的电化学发光（ECL）。与常见电极材料（如铂、金、玻碳）相比，硼掺杂金刚石在水性电解质溶液中析氢具有较大的过电位。这一固有特性使得过二硫酸盐的氧化还原ECL能够在无析氢干扰的情况下获得，且信号具有高重现性和稳定的发射。我们研究了过二硫酸盐浓度和pH对ECL发射的影响，以找到增强信号的最佳条件。
