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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 10: Interfaces and Thin Films II

CPP 10.6: Talk

Tuesday, March 27, 2012, 11:00–11:15, C 130

Interfacial effects on single dye dynamics in ultrathin liquid and thin liquid crystal films — •Daniela Täuber and Christian von Borczyskowski — nanoMA, TU-Chemnitz, Institut für Physik

Silica surfaces are widely used e.q. in the fabrication of organic electronic devices. Minimization of devices thereby induces strong confinement on the organic compound and thus enhances interfacial effects. 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 single molecule methods to explore the dynamics of dye molecules within ultrathin liquid films [1,2] and thin liquid crystal films [3] on differently treated silica surfaces. This allows us to draw conclusions on diffusion coefficients and physio-chemical binding affinities depending on the chemical structure of participating molecules and silica surfaces.

[1] D. Täuber, C. von Borczyskowski et al: Diff. Fund. J. 11 (2009) 76.

[2] D. Täuber, Dissertation, TU Chemnitz, 2011.

[3] B. Schulz, D. Täuber, J. Schuster, T. Baumgärtel, and C. von Borczyskowski, Soft Matter 7 (2011) 7431.