Issue 2, 2022

A redox-mediator pathway for enhanced multi-colour electrochemiluminescence in aqueous solution

Abstract

The classic and most widely used co-reactant electrochemiluminescence (ECL) reaction of tris(2,2′-bipyridine)ruthenium(II) ([Ru(bpy)3]2+) and tri-n-propylamine is enhanced by an order of magnitude by fac-[Ir(sppy)3]3− (where sppy = 5′-sulfo-2-phenylpyridinato-C2,N), through a novel ‘redox mediator’ pathway. Moreover, the concomitant green emission of [Ir(sppy)3]3−* enables internal standardisation of the co-reactant ECL of [Ru(bpy)3]2+. This can be applied using a digital camera as the photodetector by exploiting the ratio of R and B values of the RGB colour data, providing superior sensitivity and precision for the development of low-cost, portable ECL-based analytical devices.

Graphical abstract: A redox-mediator pathway for enhanced multi-colour electrochemiluminescence in aqueous solution

Supplementary files

Article information

Article type
Edge Article
Submitted
11 Oct 2021
Accepted
03 Dec 2021
First published
15 Dec 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2022,13, 469-477

A redox-mediator pathway for enhanced multi-colour electrochemiluminescence in aqueous solution

E. Kerr, D. J. Hayne, L. C. Soulsby, J. C. Bawden, S. J. Blom, E. H. Doeven, L. C. Henderson, C. F. Hogan and P. S. Francis, Chem. Sci., 2022, 13, 469 DOI: 10.1039/D1SC05609C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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