Qian Lei, Yang Xiurong
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China.
Talanta. 2007 Aug 15;73(1):189-93. doi: 10.1016/j.talanta.2007.03.016. Epub 2007 Mar 19.
In this paper, we demonstrate an electrochemiluminescence (ECL) enhancement of tris(2,2-bipyridyl)ruthenium(II) (Ru(bpy)(3)(2+)) by the addition of silver(I) ions. The maximum enhancement factor of about 5 was obtained on a glassy carbon electrode in the absence of co-reactant. The enhancement of ECL intensity was possibly attributed to the unique catalytic activity of Ag(+) for reactions between Ru(bpy)(3)(3+) with OH. The higher enhancement was observed in phosphate buffer solutions compared with that from borate buffer solutions. This resulted from the fact that formation of nanoparticles with large surface area in the phosphate buffer solution exhibited high catalytic activity. The amount of Ag(+), solution pH and working electrode materials played important roles for the ECL enhancement. We also studied the effects of Ag(+) on Ru(bpy)(3)(2+)/tripropylamine and Ru(bpy)(3)(2+)/C(2)O(4)(2-) ECL systems.
在本文中,我们证明了通过添加银(I)离子可增强三(2,2 - 联吡啶)钌(II)(Ru(bpy)(3)(2+))的电化学发光(ECL)。在没有共反应剂的情况下,在玻碳电极上获得了约5的最大增强因子。ECL强度的增强可能归因于Ag(+)对Ru(bpy)(3)(3+)与OH之间反应的独特催化活性。与硼酸盐缓冲溶液相比,在磷酸盐缓冲溶液中观察到更高的增强效果。这是由于在磷酸盐缓冲溶液中形成的具有大表面积的纳米颗粒表现出高催化活性。Ag(+)的量、溶液pH值和工作电极材料对ECL增强起着重要作用。我们还研究了Ag(+)对Ru(bpy)(3)(2+)/三丙胺和Ru(bpy)(3)(2+)/C(2)O(4)(2-) ECL体系的影响。