Formation of luminescent states in polybenzimidazole-based filmsстатья
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Дата последнего поиска статьи во внешних источниках: 28 октября 2020 г.
Аннотация:AbstractHere we present the results of experimental studies and theoretical computationsof the spectroscopic parameters of polybenzimidazole (PBI) films formedby casting from a formic acid solution. The kinetics of the polymer luminescenceis described, depending on the amount of the residual solvent. We demonstratethe changes in the intensity of the film luminescence with the formicacid release from the film, which is confirmed by the IR data. Based on thequantum chemistry computations, a mechanism is suggested for the formationof absorption and luminescence bands characteristic of the PBI matrix.