Dresden 2009 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 42: Poster Session II (Nanostructures at surfaces: arrays; Nanostructures at surfaces: Dots, particles, clusters; Nanostructures at surfaces: Other; Nanostructures at surfaces: Wires, tubes; Metal substrates: Adsorption of O and/or H; Metal substrates: Clean surfaces; Metal substrates: Adsorption of organic/bio moledules; Metal substrates: Solid-liquid interfaces; Metal substrates: Adsorption of inorganic molecules; Metal substrates: Epitaxy and growth; Heterogeneous catalysis; Surface chemical reactions; Ab-initio approaches to excitations in condensed matter; Organic, polymeric, biomolecular films– also with adsorbates; Particles and clusters)
O 42.107: Poster
Mittwoch, 25. März 2009, 17:45–20:30, P2
Design of composite materials via textured polymer brushes — •Manuela Pluntke1, Sabine Letsche2, Dirk Volkmer2, and Othmar Marti1 — 1Institute of Experimental Physics, Ulm University, Albert-Einstein-Allee 11, 89069 Ulm — 2Institute of Inorganic Chemistry II, Ulm University, Albert-Einstein-Allee 11, 89069 Ulm
Acidic matrix macromolecules are involved in the production of biomaterials such as bone and nacre. Therefore polyelectrolyte brushes exposing a multitude of acidic groups are attractive tools to control the growth of biogenic minerals.
To obtain crystalline thin mineral films we deposit inorganic material in a lithographically structured organic matrix of polymer brushes grown by surface-initiated atom-transfer radical polymerisation. The initial metastable amorphous thin film is converted into a polycrystalline phase by thermal treatment.
To find optimal conditions for the specific deposition of different minerals we varied the matrix properties by altering the functional groups of the brushes and the experimental parameters.
Our current studies focus on the analysis of the brush swelling behaviour in the mineralization media by AFM as well as on the mechanical properties of the materials.
After all our investigations contribute to the understanding of the interactions between the inorganic minerals and the organic matrix molecules and offer attractive perspectives for potential applications like optical information processing and regenerative medicine.