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Comparative Absorption Dynamics of the Singlet Excited States of Chlorophylls a and dстатья
- Авторы: Cherepanov Dmitry A., Petrova Anastasia A., Mamedov Mahir D., Vishnevskaya Anna I., Gostev Fedor E., Shelaev Ivan V., Aybush Arseniy V., Nadtochenko Victor A.
- Журнал: Biochemistry (Moscow)
- Том: 87
- Номер: 10
- Год издания: 2022
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 1179
- Последняя страница: 1186
- DOI: 10.1134/S000629792210011X
- Аннотация: Transient absorption dynamics of chlorophylls a and d dissolved in tetrahydrofuran was measured by the broadband femtosecond laser pump-probe spectroscopy in a spectral range from 400 to 870 nm. The absorption spectra of the excited S1 singlet states of chlorophylls a and d were recorded, and the dynamics of the of the Qy band shift of the stimulated emission (Stokes shift of fluorescence) was determined in a time range from 60 fs to 4 ps. The kinetics of the intramolecular conversion Qx→Qy (electronic transition S2→S1) was measured; the characteristic relaxation time was 54 ± 3 and 45 ± 9 fs for chlorophylls a and d, respectively.
- Добавил в систему: Мамедов Махир Джафар оглы