Migration of Excitation Energy in Furocoumarins
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 ac...
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Frontiers Media S.A.
2021-11-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2021.754950/full |
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| author | O.N. Tchaikovskaya O.N. Tchaikovskaya N.G. Dmitrieva N.G. Dmitrieva E.N. Bocharnikova V.S. Chaidonova V.S. Chaidonova P.V. Avramov |
| author_facet | O.N. Tchaikovskaya O.N. Tchaikovskaya N.G. Dmitrieva N.G. Dmitrieva E.N. Bocharnikova V.S. Chaidonova V.S. Chaidonova P.V. Avramov |
| author_sort | O.N. Tchaikovskaya |
| collection | DOAJ |
| description | 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 = 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. |
| first_indexed | 2024-12-14T15:02:35Z |
| format | Article |
| id | doaj.art-3b9d8e67e4da4631a918dca58dbc6c0f |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-14T15:02:35Z |
| publishDate | 2021-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-3b9d8e67e4da4631a918dca58dbc6c0f2022-12-21T22:56:46ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462021-11-01910.3389/fchem.2021.754950754950Migration of Excitation Energy in FurocoumarinsO.N. Tchaikovskaya0O.N. Tchaikovskaya1N.G. Dmitrieva2N.G. Dmitrieva3E.N. Bocharnikova4V.S. Chaidonova5V.S. Chaidonova6P.V. Avramov7Laboratory Photophysics and Photochemistry of Molecules, Department of Physics, Tomsk State University, Tomsk, RussiaLaboratory of Quantum Electronics, The Institute of Electrophysics of the Ural Division of the Russian Academy of Sciences, Ekaterinburg, RussiaLaboratory Photophysics and Photochemistry of Molecules, Department of Physics, Tomsk State University, Tomsk, RussiaDepartment of Medical Biology, Siberian State Medical University, Tomsk, RussiaLaboratory Photophysics and Photochemistry of Molecules, Department of Physics, Tomsk State University, Tomsk, RussiaLaboratory Photophysics and Photochemistry of Molecules, Department of Physics, Tomsk State University, Tomsk, RussiaLaboratory of Physical and Chemical Methods, Hygienic and Epidemiological Center in Republic of Khakassia, Abakan, RussiaDepartment of Chemistry, Kyungpook National University, Daugu, South KoreaThe 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 = 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.https://www.frontiersin.org/articles/10.3389/fchem.2021.754950/fullfurocoumarinluminescencesinglet-singlet transitiontriplet-triplet transitionphotodynamic activity |
| spellingShingle | O.N. Tchaikovskaya O.N. Tchaikovskaya N.G. Dmitrieva N.G. Dmitrieva E.N. Bocharnikova V.S. Chaidonova V.S. Chaidonova P.V. Avramov Migration of Excitation Energy in Furocoumarins Frontiers in Chemistry furocoumarin luminescence singlet-singlet transition triplet-triplet transition photodynamic activity |
| title | Migration of Excitation Energy in Furocoumarins |
| title_full | Migration of Excitation Energy in Furocoumarins |
| title_fullStr | Migration of Excitation Energy in Furocoumarins |
| title_full_unstemmed | Migration of Excitation Energy in Furocoumarins |
| title_short | Migration of Excitation Energy in Furocoumarins |
| title_sort | migration of excitation energy in furocoumarins |
| topic | furocoumarin luminescence singlet-singlet transition triplet-triplet transition photodynamic activity |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2021.754950/full |
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