Theoretical Modeling of the Optical Properties and Exciton Dynamics of the PSII Reaction Center

Авторы: Pishchainikov Roman Y., Mueller Marc G., Holzwarth Alfred R.
Сборник: Photosynthesis. Energy from the Sun: 14th International Congress on Photosynthesis. Allen JF, Gantt E, Golbeck JH, Osmond B eds
Год издания: 2008
Издательство: SPRINGER HEIDELBERG
Местоположение издательства: TIERGARTENSTRASSE 17, HEIDELBERG, GERMANY,D-69121
Первая страница: 163
Последняя страница: 165
Аннотация: The transient absorption kinetics and spectra of isolated reaction centers of photosystem II (PSIIRC) have been modeled using modified Redfield theory. This yielded the site energies of the eight RC pigments, and the intrinsic charge separation rate as well as the charge recombination rate between the excited state and the first radical pair (RP) state. The intrinsic charge separation rate was found to be 0.67 ps-1 for the accessory chlorophyll on the D1 branch as primary electron donor. This is consistent with an average effective primary charge separation time of 5–6 ps. The site energies on the D1 and D2 branches were found asymmetric, with the site energies of all D2 branch pigments substantially higher than for the symmetrically equivalent D1 branch pigments. This is partially at variance with the results of other exciton modeling studies.
Добавил в систему: Пищальников Роман Юрьевич

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