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Photophysical study of photoinduced electron transfer in a bis-thiophene substituted peryleneimide

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Abstract

Based on femtosecond time-resolved spectroscopy and single photon timing experiments, intramolecular photoinduced charge transfer has been investigated in two systems containing a peryleneimide chromophore (P) and thiophene (T) groups. The first compound bearing a single thiophene ring (PT1) is used as model and shows a behavior similar to P, studied previously, while in the compound with two thiophene rings attached (PT2) electron transfer from the thiophene donor to the peryleneimide acceptor is observed in benzonitrile. Femtosecond fluorescence upconversion and femtosecond transient absorption experiments in benzonitrile indicate that this ion-pair state formation occurs in 19 ps. This ion-pair state then decays with two time constants of 1400 and 820 ps, probably corresponding to different conformations of the thiophene rings.

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Authors and Affiliations

  1. Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200 F, 3001, Heverlee, Belgium

    Eduard Fron, Marc Lor, Roberto Pilot, Gerd Schweitzer, Haluk Dincalp, Steven De Feyter, Mark Van der Auweraer & Frans C. De Schryver

  2. Department Organic Chemistry II (Organic Materials and Combinatorial Chemistry), University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany

    Jens Cremer & Peter Bäuerle

  3. Max-Planck-Institute for Polymer Research, Ackermannstrasse 10, 55128, Mainz, Germany

    Klaus Müllen

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  1. Eduard Fron
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  2. Marc Lor
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  11. Frans C. De Schryver
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Corresponding author

Correspondence to Frans C. De Schryver.

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Dedicated to Professor Hiroshi Masuhara on the occasion of his 60th birthday.

Electronic supplementary information (ESI) available: Fig. A-D. See http://www.rsc.org/

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Fron, E., Lor, M., Pilot, R. et al. Photophysical study of photoinduced electron transfer in a bis-thiophene substituted peryleneimide. Photochem Photobiol Sci 4, 61–68 (2005). https://doi.org/10.1039/b409346c

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