DETAILED STUDIES OF THE SUBPICOSECOND KINETICS IN THE PRIMARY ELECTRON-TRANSFER OF REACTION CENTERS OF RHODOPSEUDOMONAS-VIRIDIS

被引：79

作者：

DRESSLER, K ^{[1
]}

UMLAUF, E ^{[1
]}

SCHMIDT, S ^{[1
]}

HAMM, P ^{[1
]}

ZINTH, W ^{[1
]}

BUCHANAN, S ^{[1
]}

MICHEL, H ^{[1
]}

机构：

[1] MAX PLANCK INST BIOPHYS,W-6000 FRANKFURT,GERMANY

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 183卷 / 3-4期

关键词：

D O I：

10.1016/0009-2614(91)80062-3

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 primary, light-induced charge separation in reaction centers of Rhodopseudomonas viridis is investigated with femtosecond time resolution. The absorption changes after direct excitation of the primary donor P at 955 nm are investigated in the time range from 100 fs to 600 ps. The experimental data, taken at various probing wavelengths, reveal one subpicosecond and two picosecond time constants: 0.65 +/- 0.2 ps, 3.5 +/- 0.4 ps, and 200 +/- 20 ps. The previously undetected 0.65 ps kinetics can be observed clearly in the spectral range of the Q(x) and Q(y) transitions of the monomeric bacteriochlorophylls. The experimental data support the idea that the accessory bacteriochlorophyll B(A) participates in the electron-transfer process.

引用

页码：270 / 276

页数：7

共 28 条

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