PMID: 8943011Nov 26, 1996Paper

Ultrafast exciton relaxation in the B850 antenna complex of Rhodobacter sphaeroides

Proceedings of the National Academy of Sciences of the United States of America
V NagarajanW W Parson

Abstract

Spectral changes were measured with femtosecond resolution following low-intensity, broad-band excitation of the peripheral antenna complex of the purple photosynthetic bacterium Rhodobacter sphaeroides. Absorption anisotropy decays also were measured. We identified a 35-fs relaxation of the absorption and emission spectra of the excited state, as well as a 20-fs anisotropy decay. We interpret these results as interlevel relaxation and dephasing, respectively, of extensively delocalized exciton states of the circular bacteriochlorophyll aggregate.

Citations

Nov 5, 1997·Current Opinion in Structural Biology·G R Fleming, R van Grondelle
Jan 27, 2011·The Journal of Physical Chemistry. a·Vladimir I NovoderezhkinRienk van Grondelle
Dec 20, 2013·Journal of the Royal Society, Interface·Francesca FassioliGregory D Scholes
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