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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-C ²,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.

SUBMITTER: Kerr E

PROVIDER: S-EPMC8729815 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature

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

Kerr Emily E Hayne David J DJ Soulsby Lachlan C LC Bawden Joseph C JC Blom Steven J SJ Doeven Egan H EH Henderson Luke C LC Hogan Conor F CF Francis Paul S PS

Chemical science 20211215 2

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-C 2,N), through a novel 'redox mediator' pathway. Moreover, the concomitant green emission of [Ir(sppy)3]3-* enables internal standardi ...[more]

PMID: 35126979

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