Formation of [Ru(bpy)3]2+‐Containing Microstructures Induced by Electrostatic Assembly and Their Application in Solid‐State Detection of Electrochemiluminescence |
| |
| Authors: | Xuping Sun Dr Yan Du Lixue Zhang Shaojun Dong Prof Erkang Wang Prof |
| |
| Institution: | State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Changchun, Jilin 130022, China, Fax: (+86)?431‐856‐9711 |
| |
| Abstract: | Tris(2,2′‐bipyridine)ruthenium(II) (Ru(bpy)3]2+) is one of the most extensively studied and used electrochemiluminescent (ECL) compounds owing to its superior properties, which include high sensitivity and stability under moderate conditions in aqueous solution. In this paper we present a simple method for the preparation of Ru(bpy)3]2+‐containing microstructures based on electrostatic assembly. The formation of such microstructures occurs in a single process by direct mixing of aqueous solutions of Ru(bpy)3]Cl2 and K3Fe(CN)6] at room temperature. The electrostatic interactions between Ru(bpy)3]2+ cations and Fe(CN)6]3? anions cause them to assemble into the resulting microstructures. Both the molar ratio and concentration of reactants were found to have strong influences on the formation of these microstructures. Most importantly, the resulting Ru(bpy)3]2+‐containing microstructures exhibit excellent ECL behavior and, therefore, hold great promise for solid‐state ECL detection in capillary electrophoresis (CE) or CE microchips. |
| |
| Keywords: | electrochemiluminescence electrostatic interactions ion conductors ruthenium self‐assembly |
|
|
