Dresden 2009 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 3: Focus Session: Interactions of Molecules with Dielectric Surfaces

DF 3.5: Hauptvortrag

Montag, 23. März 2009, 16:10–16:40, WIL A317

Fluoresence and ordering of aromatic molecules on thin dielectric films — •Moritz Sokolowski — Institut für Physikalische und Theoretische Chemie der Universität Bonn, Germany

The fluorescence of organic molecules adsorbed on well-defined surfaces constitutes an interesting and powerful probe that completes surface science experiments. In particular, the interplay of structural order and the resulting optical properties due to the intermolecular dipole-dipole coupling is of interest and offers new possibilities to tune the emitting properties. Among the substrate materials, thin epitaxial films of wide-band gap materials are most interesting, since they allow parallel investigations by electron based surface techniques, e.g., low energy electron diffraction or STM, but avoid the ultrafast fluorescence quenching that is otherwise present on metal surfaces. In this talk, the present status of fluorescence experiments on different dielectric thin film (e.g., NaCl, AlO_x) will be reported.