Photoinduced Electron Transfer between Carotenoids and Solvent Molecules Научная публикация
Журнал |
The Journal of Physical Chemistry B
ISSN: 1520-6106 , E-ISSN: 1520-5207 |
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Вых. Данные | Год: 1997, Том: 101, Номер: 39, Страницы: 7858–7862 Страниц : 5 DOI: 10.1021/jp9708761 | ||||||
Ключевые слова | Electron energy levels; Electron transitions; Paramagnetic resonance; Photolysis; Reaction kinetics; Solvents | ||||||
Авторы |
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Организации |
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Информация о финансировании (1)
1 | United States Department of Energy | DE-FG05-86ER13465 |
Реферат:
EPR evidence for photoinduced electron transfer from β-carotene and canthaxanthin to solvent molecules under 308−578 nm photolysis of frozen carotenoid solutions in CCl4, CHCl3, CH2Cl2, and CS2 has been obtained. The paramagnetic species are stable at 77 K and are attributed to carotenoid radical cations (Car•+) and solvent derived radicals. For a CS2 solution, solvent radicals are identified as CS2•- radical anions, and for chlorinated solvents, they can be assigned to either a predissociation species (R···Cl)•- or radical products R•. The proposed reaction mechanism includes energy and electron transfer from the S1 and S2 excited singlet states of carotenoid molecules to the solvent to form an intermediate donor−acceptor complex 1[Car···Sol]* which decays yielding solvent-separated radical-ion pairs (Car•+···Sol···Sol•-).
Библиографическая ссылка:
Konovalova T.A.
, Kispert L.D.
, Konovalov V.V.
Photoinduced Electron Transfer between Carotenoids and Solvent Molecules
The Journal of Physical Chemistry B. 1997. V.101. N39. P.7858–7862. DOI: 10.1021/jp9708761 WOS Scopus РИНЦ
Photoinduced Electron Transfer between Carotenoids and Solvent Molecules
The Journal of Physical Chemistry B. 1997. V.101. N39. P.7858–7862. DOI: 10.1021/jp9708761 WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 10 мар. 1997 г. |
Принята к публикации: | 8 июл. 1997 г. |
Опубликована в печати: | 1 сент. 1997 г. |
Опубликована online: | 25 сент. 1997 г. |
Идентификаторы БД:
Web of science | WOS:A1997XX85300027 |
Scopus | 2-s2.0-0031233220 |
РИНЦ | 47574807 |
Chemical Abstracts | 1997:575569 |
Chemical Abstracts (print) | 127:245604 |
OpenAlex | W2089498046 |