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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. doi:10.1021/ja020448v.

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

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 Abstract: 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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Language(s): eng - English
 Dates: 2002-08-21
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28647
ISI: 000177455000060
Other: P-02-104
DOI: 10.1021/ja020448v
 Degree: -

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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
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Affiliations:
Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 124 (33) Sequence Number: - Start / End Page: 9918 - 9925 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870