Molecular Structures of Porphyrin−Quinone Models for Electron Transfer

Autor:	J. Fajer, K. M. Barkigia, D. Melamed, R. M. Sweet, H. Kurreck, J. von Gersdorff, M. Plato, H.-C. Rohland, G. Elger, K. Möbius
Rok vydání:	1996
Předmět:	Photosynthetic reaction centre Chemistry General Engineering Photochemistry Electron transport chain Porphyrin Benzoquinone law.invention Electron transfer chemistry.chemical_compound law Molecule Physical and Theoretical Chemistry Electron paramagnetic resonance Cis–trans isomerism
Zdroj:	The Journal of Physical Chemistry. 100:14236-14239
ISSN:	1541-5740 0022-3654
DOI:	10.1021/jp961422r
Popis:	Synthetic porphyrin−quinone complexes are commonly used to mimic electron transport in photosynthetic reaction centers and to probe the effects of energetics, distances, and relative orientations on rates of electron transfer between donor−acceptor couples. The structures of two such models have been determined by X-ray diffraction. The redox pairs consist of a zinc porphyrin covalently linked to benzoquinone in cis and trans configurations via a cyclohexanediyl bridge. The crystallographic studies were undertaken to provide a structural foundation for the extensive body of experimental and theoretical results that exists for these compounds in both the ground and photoinduced charge-separated states. The results validate conclusions reached from theoretical calculations, EPR and two-dimensional NMR results for these states.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f3369d887ba7e53ecfcaef4a2942b8d https://doi.org/10.1021/jp961422r Zobrazit plný text záznamu