Hamburg 2009 – scientific programme
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MO: Fachverband Molekülphysik
MO 13: Molekülphysik Poster 1
MO 13.1: Poster
Tuesday, March 3, 2009, 16:30–19:00, VMP 8 Foyer
The impact of geometry on the fluorescence kinetics of poly(perylene bisimide acrylate) — •Florian Spreitler1, Michael Sommer2, Mukundan Thelakkat2, and Jürgen Köhler1 — 1Experimentalphysik IV and BIMF, Universität Bayreuth, Universitätsstrasse 30, 95447 Bayreuth, Germany — 2Angewandte Funktionspolymere, Makromolekulare Chemie I, Universität Bayreuth, Universitätsstrasse 30, 95447 Bayreuth, Germany
Poly(perylene bisimide acrylate) is a novel electron conducting polymer with potential applications in organic photovoltaics and organic field effect transistors. Its steady-state absorption and fluorescence spectra feature considerable differences with respect to the monomer spectra. These are attributed to the aggregation of the perylene bisimide pendant groups.
Here we report on time-resolved ensemble fluorescence experiments on solutions of poly(perylene bisimide acrylate) as a function of chain length. We used a steak-camera setup to monitor spectrally resolved fluorescence decays on timescales between 1 ps and 100 ns. An insight into the geometry of the polymer is obtained by comparing our results with the predictions of the Frenkel exciton theory for different arrangements of the chromophore groups.