Department of Chemistry
Electrogenerated chemiluminescence sensor based on tris(2,2′-bipyridine)ruthenium(II)-immobilized natural clay and ionic liquid
A novel electrogenerated chemiluminescence (ECL) sensor based on natural clay and ionic liquid was fabricated. Tris(2,2'-bipyridine)ruthenium(II) (Ru(bpy)3 2+) was immobilized on natural clay surface through simple adsorption. An ECL sensor was prepared by mixing Ru(bpy)3 2+-incorporated clay, graphite powder and an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate) as the binder. The electrochemical behavior and ECL of the immobilized Ru(bpy)3 2+ was investigated. It was observed that the ECL of immobilized Ru(bpy)3 2+ was activated by the ionic liquid. The proposed ECL sensor showed high sensitivity to tri-n-propylamine (TPrA) and the detection limit was found to be 20 pM. In addition, the ECL sensor displayed good stability for TPrA detection and long-term storage stability. © 2010 Wiley-VCH Verlag GmbH&Co. KGaA, Weinheim.
ECL sensor, Ionic liquids, Natural clay, Ru(bpy)3 2+, Sensors
Source Publication Title
Jiang, Ping, Lei Yan, Xicui Zhang, Hongyan Yuan, Dan Xiao, and Martin M. F. Choi. "Electrogenerated chemiluminescence sensor based on tris(2,2′-bipyridine)ruthenium(II)-immobilized natural clay and ionic liquid." Electroanalysis 22.2 (2010): 204-208.