Electrogenerated chemiluminescence sensor based on tris(2,2'-bipyridine)ruthenium(II)-immobilized natural clay and ionic liquid

Ping Jiang*, Lei Yan, Xicui Zhang, Hongyan Yuan, Dan Xiao, Martin M F CHOI

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)204-208
Number of pages5
JournalElectroanalysis
Volume22
Issue number2
DOIs
Publication statusPublished - Jan 2010

Scopus Subject Areas

  • Analytical Chemistry
  • Electrochemistry

User-Defined Keywords

  • ECL sensor
  • Ionic liquids
  • Natural clay
  • Ru(bpy)
  • Sensors

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