کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5399115 1392674 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Environmental coupling and population dynamics in the PE545 light-harvesting complex
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Environmental coupling and population dynamics in the PE545 light-harvesting complex
چکیده انگلیسی
Long-lived quantum coherences have been shown experimentally in the Fenna-Matthews-Olson (FMO) complex of green sulfur bacteria as well as in the phycoerythrin 545 (PE545) photosynthetic antenna system of marine algae. A combination of classical molecular dynamics simulations, quantum chemistry and quantum dynamical calculations is employed to determine the excitation transfer dynamics in PE545. One key property of the light-harvesting system concerning the excitation transfer and dephasing phenomena is the spectral density. This quantity is determined from time series of the vertical excitation energies of the aggregate. In the present study we focus on the quantum dynamical simulations using the earlier QM/MM calculations as input. Employing an ensemble-averaged classical path-based wave packet dynamics, the excitation transfer dynamics between the different bilins in the PE545 complex is determined and analyzed. Furthermore, the nature of the environmental fluctuations determining the transfer dynamics is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 169, Part B, January 2016, Pages 406-409
نویسندگان
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