Heidelberg 2015 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 19: Electronic Spectroscopy
MO 19.2: Vortrag
Donnerstag, 26. März 2015, 15:00–15:15, PH/HS1
Exciton coupling in [AB](N) copolymers — •Klaus Renziehausen1, Christoph Lambert2, and Volker Engel1 — 1Institut für Physikalische und Theoretische Chemie, Emil-Fischer-Str. 42, Universität Würzburg, 97074 Würzburg, Germany — 2Institut für Organische Chemie, Universität Würzburg, Center for Nanosystems Chemistry, Am Hubland, 97074, Würzburg, Germany
In order to understand basic optical properties of alternating copolymers we use exciton coupling theory in which the excited states of the polymers are generated by coupling of localized excited states of the monomers A and B. The mathematical description of the copolymers follows essentially the work of Kasha [1]. Within this model it is possible to explain the absorption lineshape of a squaraine-squaraine copolymer which was measured recently [2].
[1] Kasha, M. Radiat. Res. 20, 55-71 (1963)
[2] S. F. Völker, A. Schmiedel, M. Holzapfel, K. Renziehausen, V. Engel, Ch. Lambert J. Phys. Chem. C 118, 17467 (2014).