Dresden 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 29: Colloids and Complex Liquids I
CPP 29.11: Vortrag
Mittwoch, 2. April 2014, 12:15–12:30, ZEU 114
Magnetically controlled supramolecular brushes — •Pedro A. Sánchez1, Joan J. Cerdà2, Tomás Sintes2, and Sofia Kantorovich1,3 — 1University of Vienna, Sensengasse 8, 1090, Wien, Austria. — 2Instituto de Física Interdisciplinar y Sistemas Complejos (UIB-CSIC), E-07122 Palma de Mallorca, Spain. — 3Ural Federal University, Lenin av. 51, Ekaterinburg, 620000, Russia.
The creation of materials with functional surfaces is currently a key topic in nanotechnology. Numerous approaches have been proposed in recent years in order to synthesize coatings that react to different applied stimuli or environment conditions. In most cases such approaches include polymers and polyelectrolytes as building blocks of brushes with a structural behavior controlled by parameters like the temperature, pH or salt concentration of the background fluid, or the presence of an external electric field. The most recent and sophisticated systems also include colloids of diverse materials embedded or grafted in the polymeric brush, either as control or functional elements. In this context, magnetic colloids represent a promising alternative for the design of advanced functional surfaces that remains mostly unexplored. Our study is intended to determine the possibilities of magnetic colloids as the basis of supramolecular brushes that may change their properties under the control of an external magnetic field. In particular, we focus on the effects of the magnetic interactions on the structural behavior of the brushes. We employ different modeling approaches that include analytical calculations and coarse-grained computer simulations to investigate the subject.