Dynamics of aggregated states resolved by gated fluorescence in films of room temperature phosphorescent emitters.
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2019
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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 Zeonexs,
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.
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SANTOS, P. L. dos. et al. Dynamics of aggregated states resolved by gated fluorescence in films of room temperature phosphorescent emitters. Physical Chemistry Chemical Physics, v. 21, p. 3814-3821, 2019. Disponível em: <https://pubs.rsc.org/en/content/articlehtml/2019/cp/c8cp07005a>. Acesso em: 19 mar. 2019.