1. Migration of Excitation Energy in Furocoumarins.
- Author
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Tchaikovskaya ON, Dmitrieva NG, Bocharnikova EN, Chaidonova VS, and Avramov PV
- Abstract
The migration of excitation energy of a number of psoralen compounds has been studied. For this, the methods of induced absorption spectroscopy, stationary electron spectroscopy, fluorescence and phosphorescence, as well as quantum chemistry were used. A comparative photostability of psoralen was achieved by exposure to a XeCl excilamp irradiation (emission wavelength λ
em = 308 nm) with parameters Δλ = 5-10 nm, Wpeak = 18 mW/cm2 , p = 8.1 J/cm3 , f = 200 kHz, pulse duration 1 μs. It was found that the singlet-triplet transition played a major role in the migration of excitation energy into triplet states. Among all tested compounds, substances with an OCH3 -group in the structure have the strongest effect on the spectral-luminescent characteristics., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Tchaikovskaya, Dmitrieva, Bocharnikova, Chaidonova and Avramov.)- Published
- 2021
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