Abstract
A novel electrogenerated chemiluminescence (ECL) sensor based on natural clay and ionic liquid was fabricated. Tris(2,2'-bipyridine)ruthenium(II) (Ru(bpy)32+) was immobilized on natural clay surface through simple adsorption. An ECL sensor was prepared by mixing Ru(bpy)32+-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)32+ was investigated. It was observed that the ECL of immobilized Ru(bpy)32+ 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.
Original language | English |
---|---|
Pages (from-to) | 204-208 |
Number of pages | 5 |
Journal | Electroanalysis |
Volume | 22 |
Issue number | 2 |
DOIs | |
Publication status | Published - Jan 2010 |
Scopus Subject Areas
- Analytical Chemistry
- Electrochemistry
User-Defined Keywords
- ECL sensor
- Ionic liquids
- Natural clay
- Ru(bpy)
- Sensors