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Proceedings Paper

From Förster resonance energy transfer to coherent resonance energy transfer and back
Author(s): Robert M. Clegg; Melih Sener; . Govindjee
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Paper Abstract

Photosynthesis converts solar energy into chemical energy. It provides food and oxygen; and, in the future, it could directly provide bioenergy or renewable energy sources, such as bio-alcohol or hydrogen. To exploit such a highly efficient capture of energy requires an understanding of the fundamental physics. The process is initiated by photon absorption, followed by highly efficient and extremely rapid transfer and trapping of the excitation energy. We first review early fluorescence experiments on in vivo energy transfer, which were undertaken to understand the mechanism of such efficient energy capture. A historical synopsis is given of experiments and interpretations by others that dealt with the question of how energy is transferred from the original location of photon absorption in the photosynthetic antenna system into the reaction centers, where it is converted into useful chemical energy. We conclude by examining the physical basis of some current models concerning the roles of coherent excitons and incoherent hopping in the exceptionally efficient transfer of energy into the reaction center.

Paper Details

Date Published: 22 February 2010
PDF: 21 pages
Proc. SPIE 7561, Optical Biopsy VII, 75610C (22 February 2010); doi: 10.1117/12.840772
Show Author Affiliations
Robert M. Clegg, Univ. of Illinois at Urbana-Champaign (United States)
Melih Sener, Univ. of Illinois at Urbana-Champaign (United States)
. Govindjee, Univ. of Illinois at Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 7561:
Optical Biopsy VII
Robert R. Alfano, Editor(s)

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