期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 22, 期 30, 页码 10484-10493出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201601322
关键词
Forster and Dexter mechanisms; platinum; porphyrinoids; singlet energy transfer
资金
- Universite de Strasbourg
- CNRS
- Labex CSC [ANR-10-LABX-0026CSC]
- French Ministry of Research
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Fonds de Recherche du Quebec - Nature et Technologies (FRQNT)
- Centre Quebequois des Materiaux Fonctionnels (CQMF)
- Centre d'Etudes des Materiaux Optiques et Photoniques de l'Universite de Sherbrooke (CEMOPUS)
We report the preparation of several new porphyrin homodimers bridged by a platinum(II) ion in which very intense electronic communication through the coordination link occurs. Moreover, the synthesis of a new porphyrin dyad and its photophysical properties are reported. This dyad exhibits the fastest singlet energy transfer ever reported for synthetic systems between a zinc(II) porphyrin and a porphyrin free base. This extremely fast transfer (approximate to 100 femtoseconds) is in the same range as the fastest one measured in natural systems. This feature is due to the platinum(II) linker, which allows for strong MO couplings between the two porphyrin units as experimentally supported by electrochemistry and corroborated by DFT computations.
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