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Two-Photon Excitation Spectroscopy of Carotenoid-Containing and Carotenoid-Depleted LH2 Complexes from Purple Bacteriaстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Stepanenko Ilya, Kompanetz Viktor, Makhneva Zoya, Chekalin Sergey, Moskalenko Andrei, Razjivin Andrei
- Журнал: Journal of Physical Chemistry B
- Том: 113
- Номер: 34
- Год издания: 2009
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 11720
- Последняя страница: 11723
- DOI: 10.1021/jp906565m
- Аннотация: We applied two-photon fluorescence excitation spectroscopy to LH2 complex from purple bacteria Allochromatium minutissimum and Rhodobacter sphaeroides. Bacteriochlorophyll fluorescence was measured under two-photon excitation of the samples within the 1200-1500 rim region. Spectra were obtained for both carotenoid-containing and -depleted complexes of each bacterium to allow their direct comparison. The depletion of carotenoids did not alter the two-photon excitation spectra of either bacteria. The spectra featured a wide excitation band around 1350 nm (2 x 675 nm, 14 800 cm(-1)) which strongly resembled two-photon fluorescence excitation spectra of similar complexes published by other authors. We consider obtained experimental data to be evidence of direct two-photon excitation of bacteriochlorophyll excitonic states in this spectral region.
- Добавил в систему: Разживин Андрей Павлович