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URL: http://opus.kobv.de/ubp/volltexte/2007/1246/
Dosche, Carsten ; Mickler, Wulfhard ; Löhmannsröben, Hans-Gerd ; Agent, Nicolas ; Vollhardt, K. Peter C.
Photoinduced electron transfer in [N]phenylenes
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Kurzfassung auf Englisch
First studies of electron transfer in [N]phenylenes were performed in bimolecular quenching reactions of angular [3]- and triangular [4]phenylene with various electron acceptors. The relation between the quenching rate constants kq and the free energy change of the electron transfer (ΔG0CS ) could be described by the Rehm-Weller equation. From the experimental results, a reorganization energy λ of 0.7 eV was derived.Intramolecular electron transfer reactions were studied in an [N]phenylene bichomophore and a corresponding reference compound. Fluorescence lifetime and quantum yield of the bichromophor display a characteristic dependence on the solvent polarity, whereas the corresponding values of the reference compound remain constant. From the results, a nearly isoenergonic ΔG0CS can be determined. As the triplet quantum yield is nearly independent of the polarity, charge recombination leads to the population of the triplet state.
| Freie Schlagwörter (englisch): | [N]phenylenes , photoinduced electron transfer , [N]phenylene dyads | |
| RVK - Regensburger Verbundklassifikation | RVK | |
| Collection | Universität Potsdam / Aufsätze (Pre- und Postprints) / Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie / Physikalische Chemie | |
| Institut 1: | Institut für Chemie | |
| Institut 2: | Extern | |
| DDC-Sachgruppe: | Chemie | |
| Dokumentart: | c Postprint | |
| Schriftenreihe: | Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, ISSN 1866-8372 | |
| Band Nummer: | paper 023 | |
| Quelle: | Journal of Photochemistry and Photobiology A: Chemistry, In Press, Accepted Manuscript | |
| Sprache: | Englisch | |
| Erstellungsjahr: | 2007 | |
| Publikationsdatum: | 12.02.2007 | |
| Bemerkung: |
This paper is accepted for publication in: Journal of Photochemistry and Photobiology A: Chemistry ISSN: 1010-6030 DOI: 10.1016/j.jphotochem.2006.12.038 Copyright © 2007 Elsevier |
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