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Influence of Temperature on the Fluorescence Duration and Electronic Spectra of Metal-Free Tetrapyrroles in an Organic Polymer
https://doi.org/10.47612/0514-7506-2022-89-1-5-11
Abstract
Spectral-luminescent characteristics and the duration of fluorescence were measured for a series of metal-free tetrapyrroles in solid films of polyvinylbutyral at 293 and 77 K. The results obtained evidence about the lack of the viscosity factor in the case of the fluorescence enhancement under study, i.e. for the tetrapyrroles showing the enhancement effect in liquid solutions (tetraazaporphin, substituted tetraazachlorin), duration of fluorescence in a film increases insignificantly on lowering temperatures to 77 K. Analysis of experimental data made it possible to estimate the quantum yields of internal conversion and intercombinational conversion for tetraazaporphin and tetraazachlorin, which are fundamental structures in the tetrapyrrole series.
About the Authors
S. M. Arabei
Belarusian State Agrarian and Technical University
Belarus
Belarus
Minsk
M. V. Bel’kov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
E. A. Makarova
Organic Intermediates and Dyes Institute
Russian Federation
Russian Federation
Moscow
P. P. Pershukevich
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
K. N. Solovyov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
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Review
For citations:
Arabei S.M., Bel’kov M.V., Makarova E.A., Pershukevich P.P., Solovyov K.N. Influence of Temperature on the Fluorescence Duration and Electronic Spectra of Metal-Free Tetrapyrroles in an Organic Polymer. Zhurnal Prikladnoii Spektroskopii. 2022;89(1):5-11. (In Russ.) https://doi.org/10.47612/0514-7506-2022-89-1-5-11
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