Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices

We review some of our works on the absorption, excitation and emission spectra of C₆₀ embedded in rare gas matrices while stressing the role of the environement. The gas phase resonant two-photon ionization spectrum of C₆₀ is reanalysed in the light of our previous work and the energy of the lowest...

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Бібліографічні деталі
Опубліковано в: :Физика низких температур
Дата:2000
Автор: Chergui, M.
Формат: Стаття
Мова:Англійська
Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2000
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Онлайн доступ:https://nasplib.isofts.kiev.ua/handle/123456789/129207
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices / M. Chergui // Физика низких температур. — 2000. — Т. 26, № 9-10. — С. 863-873. — Бібліогр.: 30 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
_version_ 1859918044329934848
author Chergui, M.
author_facet Chergui, M.
citation_txt Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices / M. Chergui // Физика низких температур. — 2000. — Т. 26, № 9-10. — С. 863-873. — Бібліогр.: 30 назв. — англ.
collection DSpace DC
container_title Физика низких температур
description We review some of our works on the absorption, excitation and emission spectra of C₆₀ embedded in rare gas matrices while stressing the role of the environement. The gas phase resonant two-photon ionization spectrum of C₆₀ is reanalysed in the light of our previous work and the energy of the lowest three excited singlet states is determined with precision. In matrices, the visible absorption bands shift red by ~30 cm⁻¹ in Ne matrices to ~330 cm⁻¹ in Xe matrices. The observed reversal of state ordering of the lowest two singlets states (T₁g and T₂g ) between Ne and Ar matrices (in emission) and in Ne matrices, between absorption and emission spectra, is attributed to different Stokes shifts of the T₁g and T₂g states and to the small energy splitting (~50 cm⁻¹) between them. Finally, a detailed picture of the intramolecular energy redistribution processes is obtained thanks to a combination of picosecond fluorescence experiments and femtosecond pump-probe transient absorption experiments. The intramolecular relaxation processes among the pure electronic levels of the lowest three singlets states are found to be strongly medium dependent. Even, on the very short time scale of the internal conversion in the singlet vibronic manifold are medium effects manifest.
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id nasplib_isofts_kiev_ua-123456789-129207
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
issn 0132-6414
language English
last_indexed 2025-12-07T16:06:26Z
publishDate 2000
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
record_format dspace
spelling Chergui, M.
2018-01-16T19:02:47Z
2018-01-16T19:02:47Z
2000
Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices / M. Chergui // Физика низких температур. — 2000. — Т. 26, № 9-10. — С. 863-873. — Бібліогр.: 30 назв. — англ.
0132-6414
PACS: 33.20.Lg, 33.50.Dq, 78.40.Ri
https://nasplib.isofts.kiev.ua/handle/123456789/129207
We review some of our works on the absorption, excitation and emission spectra of C₆₀ embedded in rare gas matrices while stressing the role of the environement. The gas phase resonant two-photon ionization spectrum of C₆₀ is reanalysed in the light of our previous work and the energy of the lowest three excited singlet states is determined with precision. In matrices, the visible absorption bands shift red by ~30 cm⁻¹ in Ne matrices to ~330 cm⁻¹ in Xe matrices. The observed reversal of state ordering of the lowest two singlets states (T₁g and T₂g ) between Ne and Ar matrices (in emission) and in Ne matrices, between absorption and emission spectra, is attributed to different Stokes shifts of the T₁g and T₂g states and to the small energy splitting (~50 cm⁻¹) between them. Finally, a detailed picture of the intramolecular energy redistribution processes is obtained thanks to a combination of picosecond fluorescence experiments and femtosecond pump-probe transient absorption experiments. The intramolecular relaxation processes among the pure electronic levels of the lowest three singlets states are found to be strongly medium dependent. Even, on the very short time scale of the internal conversion in the singlet vibronic manifold are medium effects manifest.
en
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
Физика низких температур
Low-Temperature Physics and Chemistry in Cryomatrice
Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices
Article
published earlier
spellingShingle Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices
Chergui, M.
Low-Temperature Physics and Chemistry in Cryomatrice
title Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices
title_full Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices
title_fullStr Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices
title_full_unstemmed Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices
title_short Medium effects on the spectroscopy and intramolecular energy redistribution of C₆₀ cryogenic matrices
title_sort medium effects on the spectroscopy and intramolecular energy redistribution of c₆₀ cryogenic matrices
topic Low-Temperature Physics and Chemistry in Cryomatrice
topic_facet Low-Temperature Physics and Chemistry in Cryomatrice
url https://nasplib.isofts.kiev.ua/handle/123456789/129207
work_keys_str_mv AT cherguim mediumeffectsonthespectroscopyandintramolecularenergyredistributionofc60cryogenicmatrices