NDLI: The solid-state photo-CIDNP effect

Content Provider	Springer Nature Link
Author	Matysik, Jörg Diller, Anna Roy, Esha Alia, A.
Copyright Year	2009
Abstract	The solid-state photo-CIDNP effect is the occurrence of a non-Boltzmann nuclear spin polarization in rigid samples upon illumination. For solid-state NMR, which can detect this enhanced nuclear polarization as a strong modification of signal intensity, the effect allows for new classes of experiments. Currently, the photo- and spin-chemical machinery of various RCs is studied by photo-CIDNP MAS NMR in detail. Until now, the effect has only been observed at high magnetic fields with $^{13}$C and $^{15}$N MAS NMR and in natural photosynthetic RC preparations in which blocking of the acceptor leads to cyclic electron transfer. In terms of irreversible thermodynamics, the high-order spin structure of the initial radical pair can be considered as a transient order phenomenon emerging under non-equilibrium conditions and as a first manifestation of order in the photosynthetic process. The solid-state photo-CIDNP effect appears to be an intrinsic property of natural RCs. The conditions of its occurrence seem to be conserved in evolution. The effect may be based on the same fundamental principles as the highly optimized electron transfer. Hence, the effect may allow for guiding artificial photosynthesis.
Starting Page	427
Ending Page	435
Page Count	9
File Format	PDF
ISSN	01668595
Journal	Photosynthesis Research
Volume Number	102
Issue Number	2-3
e-ISSN	15735079
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-02-24
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electron transfer Spin polarization Radical pair Bacterial RC Solid-state NMR Plant Genetics & Genomics Plant Sciences Biochemistry Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science Medicine Biochemistry

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