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
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oai:doaj.org-article:3b9d8e67e4da4631a918dca58dbc6c0f2021-11-04T09:20:05ZMigration of Excitation Energy in Furocoumarins2296-264610.3389/fchem.2021.754950https://doaj.org/article/3b9d8e67e4da4631a918dca58dbc6c0f2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fchem.2021.754950/fullhttps://doaj.org/toc/2296-2646The 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.O.N. TchaikovskayaO.N. TchaikovskayaN.G. DmitrievaN.G. DmitrievaE.N. BocharnikovaV.S. ChaidonovaV.S. ChaidonovaP.V. AvramovFrontiers Media S.A.articlefurocoumarinluminescencesinglet-singlet transitiontriplet-triplet transitionphotodynamic activityChemistryQD1-999ENFrontiers in Chemistry, Vol 9 (2021) |
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DOAJ |
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furocoumarin luminescence singlet-singlet transition triplet-triplet transition photodynamic activity Chemistry QD1-999 |
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furocoumarin luminescence singlet-singlet transition triplet-triplet transition photodynamic activity Chemistry QD1-999 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 |
| 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. |
| format |
article |
| 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 |
| title |
Migration of Excitation Energy in Furocoumarins |
| title_short |
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_sort |
migration of excitation energy in furocoumarins |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/3b9d8e67e4da4631a918dca58dbc6c0f |
| work_keys_str_mv |
AT ontchaikovskaya migrationofexcitationenergyinfurocoumarins AT ontchaikovskaya migrationofexcitationenergyinfurocoumarins AT ngdmitrieva migrationofexcitationenergyinfurocoumarins AT ngdmitrieva migrationofexcitationenergyinfurocoumarins AT enbocharnikova migrationofexcitationenergyinfurocoumarins AT vschaidonova migrationofexcitationenergyinfurocoumarins AT vschaidonova migrationofexcitationenergyinfurocoumarins AT pvavramov migrationofexcitationenergyinfurocoumarins |
| _version_ |
1718444952968495104 |