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Issue 7, 2019
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Dynamics of aggregated states resolved by gated fluorescence in films of room temperature phosphorescent emitters

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Abstract

Phenazine derivative molecules were studied using steady state and time resolved fluorescence techniques and demonstrated to lead to strong formation of aggregated species, identified as dimers by time dependent density functional theory calculations. Blended films in a matrix of Zeonex®, produced at different concentrations, showed different contributions of dimer and monomer emissions in a prompt time frame, e.g. less than 50 ns. In contrast, the phosphorescence (e.g. emission from the triplet state) shows no significant effect on dimer formation, although strong dependence of the phosphorescence intensity on concentration is observed, leading to phosphorescence being quenched at higher concentration.

Graphical abstract: Dynamics of aggregated states resolved by gated fluorescence in films of room temperature phosphorescent emitters

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Publication details

The article was received on 12 Nov 2018, accepted on 17 Jan 2019 and first published on 22 Jan 2019


Article type: Paper
DOI: 10.1039/C8CP07005A
Phys. Chem. Chem. Phys., 2019,21, 3814-3821

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    Dynamics of aggregated states resolved by gated fluorescence in films of room temperature phosphorescent emitters

    P. L. dos Santos, O. J. Silveira, R. Huang, G. A. M. Jardim, M. J. S. Matos, E. N. da Silva Júnior, A. P. Monkman, F. B. Dias and L. A. Cury, Phys. Chem. Chem. Phys., 2019, 21, 3814
    DOI: 10.1039/C8CP07005A

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