Magnetic field dependence of 13C photo-CIDNP MAS NMR in plant photosystems I and II

被引：8
|
作者：
Roy, E.
Diller, A.
Alia
Gast, P.
van Gorkom, H. J.
de Groot, H. J. M.
Jeschke, G.
Matysik, J.
机构：
[1] Leiden Inst Chem, Gorlaeus Labs, NL-2300 RA Leiden, Netherlands
[2] Leiden Inst Phys, Huygens Lab, Leiden, Netherlands
[3] Univ Konstanz, Fachbereich Chem, D-7750 Constance, Germany
来源：
APPLIED MAGNETIC RESONANCE | 2007年 / 31卷 / 1-2期
关键词：
D O I：
10.1007/BF03166256
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Photochemically induced dynamic nuclear polarization is observed in the two photosynthetic reaction centers of plants, photosystem I (PSI) and photosystem 11 (PSII) by `C magic-angle spinning nuclear magnetic resonance (NMR) at three different magnetic fields 17.6, 9.4, and 4.7 T. There is a significant difference in field dependence detected in the light-induced signal pattern of the two photosystems. For PSII the optimal NMR enhancement factor of about 5000 is observed at 4.7 T. On the other hand, the maximal light-induced signals of PSI are observed at 9.4 T.
引用
收藏
页码：193 / 204
页数：12
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