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 |
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Rok vydání: | 1999 |
Předmět: | |
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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