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Spectral hole burning of a strongly exciton-coupled bacteriochlorophyll a antenna complex

✍ Scribed by S.G. Johnson; G.J. Small

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 412 KB
Volume: 155
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(89)87171-4

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✦ Synopsis

Persistent spectral hole burning is reported for the antenna complex of the photosynthetic bacterium Prosthecochloris aestuarii. This complex contains subunits which contain seven BChl a molecules. The hole burning data are shown to be consistent with an excitonically coupled system. The data also provide the magnitude of the inhomogeneous broadening, a decay time of z 250 fs for an upper exciton level and the magnitude of the linear exciton-phonon coupling of the optical transition associated with the lowest energy absorption system.

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