Details

Autor(en) / Beteiligte

• Dos Santos, Paloma L
• Silveira, Orlando J
• Huang, Rongjuan
• Jardim, Guilherme A M
• Matos, Matheus J S
• da Silva Júnior, Eufrânio N
• Monkman, Andrew P
• Dias, Fernando B
• Cury, Luiz A

Titel

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

Ist Teil von

• Physical chemistry chemical physics : PCCP, 2019, Vol.21 (7), p.3814-3821

Ort / Verlag

England: Royal Society of Chemistry

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.