Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 16: Poster: Colloids and Complex Liquids
CPP 16.24: Poster
Dienstag, 27. März 2012, 18:15–20:45, Poster A
Ferrocene-Pyridine Block Copolymers in Solution - Cylindrical Micelles in Methanol — •Stephan Hillmann1, Martin Kraska1, Markus Gallei2, Roland Klein2, Matthias Rehahn2, and Bernd Stühn1 — 1Experimentelle Physik kondensierter Materie, TU Darmstadt — 2Ernst-Berl-Institut für Technische und Makromolekulare Chemie, TU Darmstadt
Ferrocene-containing polymers attract much attention because of their unique mechanical, (electro)chemical, (opto)electronical or magnetic properties [1]. We present structural investigations of the block copolymer poly(vinylferrocene-b-(2-vinylpyridine)) (PVFc-b-P2VP) [2] dissolved in methanol. Results from Small angle X-Ray scattering (SAXS) and polarized and depolarized dynamic light scattering (DLS) are combined leading to a detailed understanding of the structure in solution [3]. We found cylindrical micellar structures with different length to diameter ratios depending on the bulk volume fraction φ of PVFc in P2VP. Cylindrical diameters could be determined by DLS and SAXS. We applied different diffusion models to the DLS data in order to extract cylinder lengths and diameters. Both scattering methods support the image of a solution of isolated dissolved cylinders.
[1] G. R. Whittell, I. Manners, Adv. Mater. 2007, 19, 3439
[2] M. Gallei et al. Macromolecules, 2010, 43 (4), 1844-1854
[3] M. Kraska, S. Hillmann, M. Gallei, R. Klein, M. Rehahn, B. Stühn, in preparation