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THE LIFETIME OF THE EXCITED SINGLET STATE OF β‐CAROTENE: CONSEQUENCES TO PHOTOSYNTHETIC LIGHT HARVESTING
Author(s) -
Dallinger R. F.,
Woodruff W. H.,
Rodgers M. A. J.
Publication year - 1981
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1981.tb05339.x
Subject(s) - picosecond , nanosecond , photochemistry , resonance raman spectroscopy , singlet state , excited state , raman spectroscopy , carotene , chemistry , photosynthesis , spectroscopy , resonance (particle physics) , energy transfer , excitation , materials science , chemical physics , physics , optics , atomic physics , laser , biochemistry , organic chemistry , quantum mechanics
The mechanism of singlet‐singlet energy transfer to chlorophyll from carotenoid auxiliary pigments in photosynthetic apparatus is considered. Transmittance studies and resonance‐enhanced Raman spectroscopy on a picosecond time scale lead to the conclusion that the de–excitation lifetime of the β‐carotene singlet state is not greater than one picosecond. This would require close contiguity on the part of the transferring partners.