http://hdl.handle.net/20.500.12701/2152 Frontiers in Chemistry is a high visibility and quality journal, publishing rigorously peer-reviewed research across the chemical sciences. Sat, 17 Feb 2024 20:13:04 GMT 2024-02-17T20:13:04Z http://hdl.handle.net/20.500.12701/2153 Название: Migration of Excitation Energy in Furocoumarins Авторы: Tchaikovskaya, O.N.; Dmitrieva, N.G.; Bocharnikova, E.N.; Chaidonova, V.S.; Avramov, P.V. Краткий осмотр (реферат): 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 λem 308 nm) with parameters Δλ 5–10 nm, Wpeak 18mW/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 Thu, 04 Nov 2021 00:00:00 GMT http://hdl.handle.net/20.500.12701/2153 2021-11-04T00:00:00Z