13C and 15N photo-CIDNP MAS NMR has been demonstrated to be a valuable 4EGI-1 ic50 analytical tool for the functional analysis of the primary photochemical machinery of RCs, although several possible applications have not yet been explored. It appears that the solid-state photo-CIDNP effect is an intrinsic property of natural RCs and correlated to efficient ET. The spin-chemical mechanisms causing the solid-state photo-CIDNP effect are understood, but it still has to be explored why nature has chosen and conserved a set of electronic and kinetic parameters leading to both, efficient
ET and the solid-state photo-CIDNP effect. Acknowledgments The authors thank E. Daviso, G. Jeschke, T. Rohmer, K·B. Sai Sankar Gupta, PI3K Inhibitor Library G.J. Janssen and S. Thamarath-Surendran for stimulating discussions. This project has been supported by a grant of the Volkswagen-Stiftung (I/78010, Förderinitiative Elektrontransfer) and by an NWO Vidi grant (700 53 423) to J.M. Open Access This article is distributed under the terms of the Creative
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