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Annihilation electrogenerated chemiluminescence of mixed metal chelates in solution : Modulating emission colour by manipulating the energetics

Kerr, Emily, Doeven,Egan H., Barbante, Gregory J., Hogan, Conor F., Bower, David J., Donnelly, Paul S., Connell, Timothy U. and Francis, Paul S. 2015, Annihilation electrogenerated chemiluminescence of mixed metal chelates in solution : Modulating emission colour by manipulating the energetics, Chemical Science, vol. 6, no. 1, pp. 472-479, doi: 10.1039/c4sc02697g.

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Title Annihilation electrogenerated chemiluminescence of mixed metal chelates in solution : Modulating emission colour by manipulating the energetics
Author(s) Kerr, Emily
Doeven,Egan H.ORCID iD for Doeven,Egan H. orcid.org/0000-0003-2677-4269
Barbante, Gregory J.
Hogan, Conor F.
Bower, David J.
Donnelly, Paul S.
Connell, Timothy U.
Francis, Paul S.ORCID iD for Francis, Paul S. orcid.org/0000-0003-4165-6922
Journal name Chemical Science
Volume number 6
Issue number 1
Start page 472
End page 479
Total pages 8
Publisher Royal Society of Chemistry
Place of publication Cambridge, United Kingdom
Publication date 2015-10-15
ISSN 2041-6520
2041-6539
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
EMITTING ELECTROCHEMICAL-CELLS
ELECTRON-TRANSFER REACTIONS
IRIDIUM COMPLEXES
GENERATED CHEMILUMINESCENCE
COORDINATION-COMPOUNDS
RUTHENIUM(II) COMPLEX
SELECTIVE EXCITATION
ELECTROCHEMILUMINESCENCE
SYSTEMS
STATE
Summary We 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
Language eng
DOI 10.1039/c4sc02697g
Field of Research 030102 Electroanalytical Chemistry
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID FT100100646
Copyright notice ©2015, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30070606

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