期刊名称:Proceedings of the National Academy of Sciences
印刷版ISSN:0027-8424
电子版ISSN:1091-6490
出版年度:1987
卷号:84
期号:16
页码:5511-5515
DOI:10.1073/pnas.84.16.5511
语种:English
出版社:The National Academy of Sciences of the United States of America
摘要:An effective Hamiltonian formalism is used to calculate the homogeneous linewidth of long-wavelength absorption in the photosynthetic reaction center. Agreement with the experimental values of {approx}400 cm-1 for the hole width of the 990-nm band of Rhodopseudomonas viridis is obtained. The anomalously (two orders of magnitude) large width is explained in terms of resonant coupling to charge transfer states. These results support a dynamical model of primary charge separation [Friesner, R. & Wertheimer, R. (1982) Proc. Natl. Acad. Sci USA 79, 2138-2142] in which such resonant coupling was also concluded to be important.
关键词:photosynthetic electron transfer ; vibronic coupling theory