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Updated: Apr 21, 2026
A Novel Technique for Generating and Observing Chemiluminescence in a Biological Setting
Published on: March 9, 2017
Electrochemiluminescence of a novel iridium(III) complex with dual-potential emission and its application in
Tongtong Li1, Yingying Su2, Mingxia Sun2
1Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China. lvy@scu.edu.cn.
Abstract:
Three Ir(C^N)2(N^N)+ complexes with the same C^N ligand and different N^N ligands were synthesized, and their electrochemiluminescence (ECL) properties were systematically investigated using TPA and K2S2O8 as coreactants, respectively. It was found that the introduction of carboxyl groups into the N^N ligand gave Ir-COOH the strongest ECL signal. Additionally, the cathodic ECL pathway (with K2S2O8) exhibited significantly higher intensity (10-fold greater than that of the anodic route) and excellent stability, with a relative ECL efficiency (ΦECL) of 188% (vs. 100% for the Ru(bpy)32+/K2S2O8 reference). Then, a sensitive ECL sensor based on Ir-COOH-SWCNTs-Au/GCE for chloramphenicol (CAP) detection was constructed.
