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Indirect consequences of exciplex states on the phosphorescence lifetime of phenazine-based 1,2,3-triazole luminescent probes.

Costa, B.B.A. and Jardim, G. A. M. and Santos, P. L. and Calado, H.D.R. and Monkman, A. P. and Dias, F. B. and da Silva Júnior, E.N. and Cury, L. (2017) 'Indirect consequences of exciplex states on the phosphorescence lifetime of phenazine-based 1,2,3-triazole luminescent probes.', Physical chemistry chemical physics., 19 (5). pp. 3473-3479.

Abstract

The optical properties of phenazine derivative probe solutions involving intersystem crossing from singlet to triplet states were investigated by time resolved spectroscopy. The room temperature phosphorescence emission presented different time responses when Cd2+ ions were bound to the probe chemical structure. The complex exciplex formation observed to occur in this case was not directly responsible for the change in the phosphorescence lifetime. This was more influenced by the new molecular conformation and modified spin–orbit coupling imposed by the binding of the Cd2+ ions to the phenazine molecules.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1039/C6CP06134F
Date accepted:20 October 2016
Date deposited:30 November 2016
Date of first online publication:21 October 2016
Date first made open access:20 October 2017

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