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  Photoinduced electron transfer in a rigid first generation triphenylamine core dendrimer substituted with a peryleneimide acceptor

Lor, M., Thielemans, J., Viaene, L., Cotlet, M., Hofkens, J., Weil, T., et al. (2002). Photoinduced electron transfer in a rigid first generation triphenylamine core dendrimer substituted with a peryleneimide acceptor. Journal of the American Chemical Society, 124(33), 9918-9925.

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 Urheber:
Lor, M., Autor
Thielemans, J., Autor
Viaene, L., Autor
Cotlet, M., Autor
Hofkens, J., Autor
Weil, T., Autor
Hampel, C.1, Autor           
Müllen, Klaus1, Autor           
Verhoeven, J. W., Autor
Van der Auweraer, M., Autor
De Schryver, F. C., Autor
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Zusammenfassung: The electron-transfer process of a first generation dendrimer with a triphenylamine core substituted with one peryleneimide chromophore at the rim (N1P1) was investigated by steady-state and time-resolved spectroscopic techniques in two different solvents of medium and low polarity. Single photon counting experiments showed a fast charge separation and a thermally activated back reaction, which is uncommon for a polyaryl bridge or long-distance through-space electron transfer. The four exponential fluorescence decay can be traced to the presence of two subsets of molecules, which are constitutional isomers of N1P1. Although formally N1P1 resembles a donor- bridge-acceptor compound, detailed analysis of the data shows that the electron transfer occurs by a through-space mechanism. This amine core dendrimer has peculiar and unique characteristics resulting in the observation of efficient back transfer and delayed peryleneimide fluorescence in diethyl ether at 293 K and very long-lived charge recombination luminescence at 77 K.

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Sprache(n): eng - English
 Datum: 2002-08-21
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Keine Begutachtung
 Identifikatoren: eDoc: 28647
ISI: 000177455000060
Anderer: P-02-104
 Art des Abschluß: -

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Titel: Journal of the American Chemical Society
  Alternativer Titel : J. Am. Chem. Soc.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 124 (33) Artikelnummer: - Start- / Endseite: 9918 - 9925 Identifikator: ISSN: 0002-7863