Dynamics of energy transfer in the LH2 antenna complex of the purple bacterium Rhodobacter sphaeroides

被引：0
|
作者：
Polívka, T [1 ]
Herek, JL [1 ]
Pullerits, T [1 ]
Dahlbom, M [1 ]
Hunter, CN [1 ]
Sundström, V [1 ]
机构：
[1] Univ Lund, Dept Chem Phys, S-22100 Lund, Sweden
来源：
ULTRAFAST PHENOMENA XI | 1998年 / 63卷
关键词：
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Transient absorption spectra and kinetics are used for detailed studies of energy transfer dynamics within the B850 ring of the LH2 antenna of the purple bacterium Rb. sphaeroides. The initial exciton relaxation was found to occur within the first 100 fs and no temperature dependence of this process was observed. Transient absorption spectra of the LH2 antenna complex at 6 K revealed a new spectral band around 880 nm as a result of energy distribution of the lowest exciton states of B850 rings at cryogenic temperatures.
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页码：669 / 671
页数：3
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