Spectroscopy of single light-harvesting complexes from purple photosynthetic bacteria at 1.2 K

被引：60
|
作者：
van Oijen, AM
Ketelaars, M
Köhler, J
Aartsma, TJ
Schmidt, J
机构：
[1] Leiden Univ, Huygens Lab, Ctr Study Excited States Mol, NL-2300 RA Leiden, Netherlands
[2] Leiden Univ, Huygens Lab, Dept Biophys, NL-2300 RA Leiden, Netherlands
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 1998年 / 102卷 / 47期
关键词：
D O I：
10.1021/jp9830629
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：
In this Letter we present the first observation of the fluorescence-excitation spectra of individual light-harvesting complexes (LH2) from purple photosynthetic bacteria at 1.2 K. The spectra reveal the electronic transitions to the individual excitonic states of the assembly of absorbing bacteriochlorophyll a (BChl a) molecules. From the experiment we can extract information about site energies of the individual pigments, degree of disorder, dipolar coupling, excited-state dynamics, and spectral diffusion.
引用
收藏
页码：9363 / 9366
页数：4
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