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Determination of the S2 lifetime of β-carotene

✍ Scribed by A.P. Shreve; J.K. Trautman; T.G. Owens; A.C. Albrecht

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
771 KB
Volume
178
Category
Article
ISSN
0009-2614

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✦ Synopsis

The Sz lifetime of &carotene has been determined by both femtosecond transient absprption experiments and emission yield studies. For barotene dissolved in ethanol and in C&, the initially excited SI was found to live for 200 to 250 fs at room temperature. Implcations of this result for carotenoid-toxhlorophyll energy transfer in photosynthetic systems are discussed.

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