Radical pair quantum yield in reaction centers of photosystem II of green plants and of the bacterium Rhodobacter sphaeroides. Saturation behavior with sub-picosecond pulses

被引：10

作者：

Groot, ML

vanGrondelle, R

Leegwater, JA

vanMourik, F

机构：

[1] VRIJE UNIV AMSTERDAM,DEPT PHYS & ASTRON,NL-1081 HV AMSTERDAM,NETHERLANDS

[2] VRIJE UNIV AMSTERDAM,INST MOL BIOL SCI,NL-1081 HV AMSTERDAM,NETHERLANDS

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 39期

关键词：

D O I：

10.1021/jp971113g

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：

We have measured the radical pair quantum yield of reaction centers of photosystem II of green plants and of the purple bacterium Rhodobacter sphaeroides as a function of excitation density using sub-picosecond pulses at 77 K. The saturation behavior of both RCs can be described consistently by taking into account stimulated emission and the geometry of the polarized (magic angle) laser experiment. Our results show that the quantum yield of charge separation for the PS II RC is very high, about 1, and that no annihilation occurs under these conditions.

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页码：7869 / 7873

页数：5

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