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Formation of luminescent states in polybenzimidazole‐based films
Author(s) -
Akovantseva Anastasiya,
Kotova Svetlana,
Gromov Oleg,
Burdukovskii Vitaliy,
Kholkhoev Bato,
Timashev Peter,
Yusupov Vladimir,
Rybaltovsky Аleksey
Publication year - 2020
Publication title -
journal of polymer science
Language(s) - English
Resource type - Journals
eISSN - 2642-4169
pISSN - 2642-4150
DOI - 10.1002/pol.20200218
Subject(s) - luminescence , formic acid , casting , polymer , absorption (acoustics) , kinetics , solvent , materials science , chemical engineering , matrix (chemical analysis) , chemistry , photochemistry , polymer chemistry , organic chemistry , optoelectronics , composite material , physics , quantum mechanics , engineering
Abstract Here we present the results of experimental studies and theoretical computations of the spectroscopic parameters of polybenzimidazole (PBI) films formed by casting from a formic acid solution. The kinetics of the polymer luminescence is described, depending on the amount of the residual solvent. We demonstrate the changes in the intensity of the film luminescence with the formic acid release from the film, which is confirmed by the IR data. Based on the quantum chemistry computations, a mechanism is suggested for the formation of absorption and luminescence bands characteristic of the PBI matrix.