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Annihilation electrogenerated chemiluminescence of mixed metal chelates in solution : Modulating emission colour by manipulating the energetics
journal contribution
posted on 2015-01-01, 00:00 authored by Emily KerrEmily Kerr, Egan DoevenEgan Doeven, Gregory Barbante, C F Hogan, D J Bower, P S Donnelly, T U Connell, Paul FrancisPaul FrancisWe demonstrate the mixed annihilation electrogenerated chemiluminescence of tris(2,2′-bipyridine)ruthenium(ii) with various cyclometalated iridium(iii) chelates. Compared to mixed ECL systems comprising organic luminophores, the absence of T-route pathways enables effective predictions of the observed ECL based on simple estimations of the exergonicity of the reactions leading to excited state production. Moreover, the multiple, closely spaced reductions and oxidations of the metal chelates provide the ability to finely tune the energetics and therefore the observed emission colour. Distinct emissions from multiple luminophores in the same solution are observed in numerous systems. The relative intensity of these emissions and the overall emission colour are dependent on the particular oxidized and reduced species selected by the applied electrochemical potentials. Finally, these studies offer insights into the importance of electronic factors in the question of whether the reduced or oxidized partner becomes excited in annihilation ECL. This journal is
History
Journal
Chemical ScienceVolume
6Issue
1Pagination
472 - 479Publisher
Royal Society of ChemistryLocation
Cambridge, United KingdomPublisher DOI
Link to full text
ISSN
2041-6520eISSN
2041-6539Language
engPublication classification
C1 Refereed article in a scholarly journal; C Journal articleCopyright notice
2015, Royal Society of ChemistryUsage metrics
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No categories selectedKeywords
Science & TechnologyPhysical SciencesChemistry, MultidisciplinaryChemistryEMITTING ELECTROCHEMICAL-CELLSELECTRON-TRANSFER REACTIONSIRIDIUM COMPLEXESGENERATED CHEMILUMINESCENCECOORDINATION-COMPOUNDSRUTHENIUM(II) COMPLEXSELECTIVE EXCITATIONELECTROCHEMILUMINESCENCESYSTEMSSTATEELECTROCHEMICALLY GENERATED CHEMILUMINESCENCEGREENPHOTOCHEMISTRYPHOTOPHYSICS
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