VIBRATIONAL COHERENCE AND RELAXATION DYNAMICS IN THE PRIMARY DONOR STATE OF THE MUTANT REACTION-CENTER OF RHODOBACTER-CAPSULATUS - THEORETICAL-ANALYSIS OF PUMP-PROBE STIMULATED-EMISSION

被引：25

作者：

GU, XZ ^{[1
]}

HAYASHI, M ^{[1
]}

SUZUKI, S ^{[1
]}

LIN, SH ^{[1
]}

机构：

[1] ACAD SINICA, INST ATOM & MOLEC SCI, TAIPEI 107, TAIWAN

来源：

BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS | 1995年 / 1229卷 / 02期

关键词：

PHOTOSYNTHETIC REACTION CENTER; ELECTRON TRANSFER; VIBRATIONAL RELAXATION; VIBRATIONAL COHERENCE; ULTRAFAST SPECTROSCOPY (R-CAPSULATUS);

D O I：

10.1016/0005-2728(94)00197-D

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The effects of vibrational coherence and vibrational relaxation on the pump-probe stimulated emission are theoretically studied on the basis of the perturbative density operator method and the transient linear susceptibility theory. The time-resolved profiles are simulated for the system with the single vibrational mode at the several temperature at the several probing frequencies. The quantum beats appeared in the profiles are shown to rapidly dephase as the temperature increases. The calculations imply that the time constant of the vibrational relaxation of the intra-dimer mode in the special pair of the D-LL mutant of Rhodobacter capsulatus is approximately the order of 300 femtosecond at the low temperatures.

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页码：215 / 224

页数：10

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