Effect of diagonal energy disorder on circular dichroism spectra of Fenna-Matthews-Olson trimers

被引：10

作者：

Buck, DR

Savikhin, S

Struve, WS

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,USDA,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 42期

关键词：

D O I：

10.1021/jp971758g

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：

Circular dichroism spectra of Fenna-Matthews-Olson trimers (bacteriochlorophyll a-protein antenna complexes from green photosynthetic bacteria) are unusually sensitive to diagonal energy disorder because the resonance interactions between pigments belonging to different protein subunits are weak (less than or equal to 20 cm(-1)). Substantial differences occur between CD spectra in exciton simulations performed with and without realistic inhomogeneous distribution functions for the input pigment diagonal energies. Future simulations of FMO optical properties such as CD and pump-probe anisotropies should consider diagonal disorder in order to accurately describe this antenna's electronic structure.

引用

收藏

页码：8395 / 8397

页数：3

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