Hannover 2010 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 8: Poster: Electronic Spectroscopy

MO 8.6: Poster

Dienstag, 9. März 2010, 16:00–18:30, Lichthof

Time resolved spectroscopy of single calix[4]arene-linked perylene bisimide dimers — •Abey Issac¹, Dominique Ernst¹, Catharina Hippius², Frank Würthner², and Jürgen Köhler¹ — ¹Experimental Physics IV and Bayreuth Institute für Macromolecular Research (BIMF), University of Bayreuth, 95440 Bayreuth, Germany — ²Institut für Organische Chemie and Röntgen Research Center for Complex Material Systems, Universität Würzburg, 97074 Würzburg, Germany

Initial studies of single calix[4]arene linked perylene bisimide dimers revealed intensity transients featuring two distinct levels of the signal [1]. The highest intensity level is associated with an efficient energy transfer between the two bisimide units whereas the lower intensity level presumably reflects the photoreduction of one of the bisimides. Here we report about experiments where we monitored the emission intensity and the fluorescence lifetime of the emitting species simultaneously. From these experiments we expect to obtain unambiguous information about the character of the emitting state.

[1] D.Ernst, R.Hildner, C. Hippius, F. Würthner, J. Köhler, Chem.Phys.Lett. 482 (2009) 93