Dresden 2009 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 28: POSTERS Interfaces and Thin Films

CPP 28.12: Poster

Mittwoch, 25. März 2009, 17:00–19:00, P3

Orientation and spatial distribution of dyes binding to SiO2 surfaces — •Schubert Sebastian, Täuber Daniela, Kowerko Danny, Schuster Jörg, and von Borczyskowski Christian — nanoMA TU-Chemnitz, Institut für Physik, 09107 Chemnitz.

Silica surfaces are widely used e.q. in the fabrication of organic electronic devices. Yet many details of the interactions between silica surfaces and organic molecules which are crucial for their electrical properties and thus for device performance are not fully understood.

Here we use ensemble fluorescence and single molecule methods to explore the spatial distribution, molecular orientation and spectral dynamics of differently functionalized dyes on silica surfaces [1]. This allows us to draw conclusions on preferential geometrical orientations and physio-chemical binding affinities depending on the chemical structure of participating molecules and silica surfaces.

[1] D. Kowerko, J. Schuster, Ch. von Borczyskowski: Molecular Physics submitted