DETERMINATION OF THE S2 LIFETIME OF BETA-CAROTENE

被引：145
|
作者：
SHREVE, AP [1 ]
TRAUTMAN, JK [1 ]
OWENS, TG [1 ]
ALBRECHT, AC [1 ]
机构：
[1] CORNELL UNIV,PLANT SCI SECT,ITHACA,NY 14853
来源：
CHEMICAL PHYSICS LETTERS | 1991年 / 178卷 / 01期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0009-2614(91)85058-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The S2 lifetime of beta-carotene has been determined by both femtosecond transient absorption experiments and emission yield studies. For beta-carotene dissolved in ethanol and in CS2, the initially excited S2 was found to live for 200 to 250 fs at room temperature. Implications of this result for carotenoid-to-chlorophyll energy transfer in photosynthetic systems are discussed.
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页码：89 / 96
页数：8
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