Synthesis, Spectroscopy, and Semiempirical Study of a Novel Porphyrin-Flavin Dyad

Autor:	Susanne Stark, Kurt Polborn, Dominik Hermann, Gottfried Grabner, Andreas B. J. Parusel, Rudolf Gompper, Anne Christina Schindler, Gottfried Köhler
Rok vydání:	1999
Předmět:	education.field_of_study Chemistry Organic Chemistry Population General Chemistry Flavin group Photochemistry Porphyrin Acceptor Catalysis Amidine chemistry.chemical_compound Electron transfer Singlet state education Ground state
Zdroj:	Chemistry - A European Journal. 5:3208-3220
ISSN:	1521-3765 0947-6539
Popis:	Potential photosynthetic models, porphyrin dyads with various acceptors, that are separated by a diazaphenylene spacer, are synthesized by a new strategy. The amidine and vinamidinium salts are coupled by pyrimidine rings. In one example (n=1 in the figure), excitation of a flavin acceptor results in energy transfer to the porphyrin singlet (≈60 %) and population of a charge-separated state (≈40 %), which relaxes to the ground state on a subnanosecond time scale.
Databáze:	OpenAIRE
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