OBSERVATION OF ULTRAFAST ENERGY-TRANSFER FROM THE ACCESSORY BACTERIOCHLOROPHYLLS TO THE SPECIAL PAIR IN PHOTOSYNTHETIC REACTION CENTERS

被引：60

作者：

JIA, YW ^{[1
]}

JONAS, DM ^{[1
]}

JOO, TH ^{[1
]}

NAGASAWA, Y ^{[1
]}

LANG, MJ ^{[1
]}

FLEMING, GR ^{[1
]}

机构：

[1] UNIV CHICAGO,JAMES FRANCK INST,CHICAGO,IL 60637

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1995年 / 99卷 / 17期

关键词：

D O I：

10.1021/j100017a001

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 energy transfer from accessory bacteriochlorophyll molecules (B) to the special pair (P) in the reaction center of Rb. capsulatus and Rb, sphaeroides R26 has been time-resolved using 23 fs pulses. In both reaction centers, the B* transient bleaching decays biexponentially, with a fast component of approximately 100 fs which gives a characteristic time scale for excitation energy transfer from B* to P. In Rb. capsulatus, the amplitudes for this component and a 360 +/- 40 fs decay of uncertain origin reported in previous experiments are approximately equal. Several models for the two components are discussed.

引用

页码：6263 / 6266

页数：4