Berlin 2015 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 43: P8: Nanoparticles and Compsite Materials

CPP 43.8: Poster

Wednesday, March 18, 2015, 10:00–13:00, Poster A

Polymer metal oxide hybrid materials and films — •Michael Bahr, Ezzeldin Metwalli, and Peter Müller-Buschbaum — TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching

Materials with novel electrical, optical and magnetic properties are possible thanks to the implementation of metal-polymer nanocomposite (MPN) structures. In future, thin films of MPN will be suitable for applications like sensors and memory devices. In such composites diblock copolymers are the matrix of choice for providing the desired arrangement of the metal, since they exhibit structure formation due to micro phase separation. Metal attaches preferentially to one of the two copolymer blocks, thereby forming a well-ordered structure inside the polymer matrix.

In this work we use an in-depth investigation of the system poly(strerene-b-methylmethacrylate) (PS-b-PMMA), which forms a lamellar structure, and a Cobalt salt based on a 2,2’ bipyridine ring (C₁₀H₈Cl₂CoN₂). Bulk samples and thin films are prepared with different molar ratios of the salt and block copolymer by solution casting and by spin coating, where the cobalt content oxidizes. Bulk samples are characterized with in-situ thermal SAXS. Thin films are investigated with FTIR, AFM and SEM. We observe a well-ordered structure of the polymer matrix and a change of morphology with different molar ratios.