Berlin 2012 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 1: Interfaces and Thin Films I

CPP 1.7: Vortrag

Montag, 26. März 2012, 11:30–11:45, C 130

Self-assembled membranes from bionanoparticle-polymer conjugates — •Patrick van Rijn, Nathalie Mougin, Christine Kathrein, and Alexander Böker — DWI an der RWTH Aachen e.V., IPC RWTH Aachen University, Germany

New bionanoparticles have been prepared by using Horse spleen Ferritin (HSF) as a scaffold for the grafting from of thermo-responsive poly(N-isopropyl acrylamide) and photo-cross-linkable (2-(dimethyl maleinimido)-N-ethyl-acrylamide. The amino-groups on the exterior of HSF were modified to form a macro-initiator from which sequentially atom transfer radical polymerization was performed.[Mougin, et. al. Adv. Funct. Mater. 2011, 21, 2470] The newly formed bionanoparticles-polymer composites are excellent candidates for the stabilization of polar/apolar interfaces.[van Rijn, et. al., Langmuir, submitted] and oil-in-water and water-in-oil emulsions have been prepared and stabilized by cross-linking, forming soft capsules which are stable enough to be collected, transferred and are able to endure co-solvents like ethanol.[van Rijn, et. al. Chem. Commun., 2011, 47, 8376] A similar process can also be used for the formation of 2-D membranes which display interesting properties. Here the protein is used as a sacrificial template which creates defined pores after denaturation. The membranes are highly stable, easily formed and used for the separation of various nano-sized species.