Dresden 2011 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 24: Poster: Polymer Dynamics

CPP 24.7: Poster

Dienstag, 15. März 2011, 18:00–20:00, P2

Patterned Polymer Carpets — •Ihsan Amin¹, André Beyer², Marin Steenackers³, Rene Schubel¹, Ning Zhang³, Armin Gölzhäuser², and Rainer Jordan¹ — ¹Professur für Makromolekulare Chemie, Department Chemie, TU Dresden, Zellescher Weg 19, 01069 Dresden, Germany — ²Physik supramolekularer Systeme, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany — ³Wacker-Lehrstuhl für Makromolekulare Chemie, TU München, Lichtenbergstrasse 4, 85747 Garching, Germany

We report on the first example for the fabrication of patterned polymer carpets. Polymer brushes of styrene and 4-vinyl pyridine were grafted by self-initiated surface photopolymerization and photografting (SIPGP) on a 2D framework of fully crosslinked and chemically patterned nanosheets. The grafted polymer brushes were observed over the entire nanosheets with a preferred grafting on the functionalized nanosheet areas. This results in continuous polymer carpets with an intact nanosheet framework but with amplification of the chemical patterning into a 3D topography of the grafted polymer brush. In the case of negative patterned nanosheet, the patterned carpet could be prepared as freestanding ultrathin membranes. Furthermore, swelling experiments with poly(4-vinyl pyridine) carpets showed that the direction of the resulting buckling of the flexible carpet is correlated to the patterning. This may open the possibility of the development of micro- or nanoactuator devices with anisotropic responds upon environmental changes.