Regensburg 2004 – scientific programme
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CPP: Chemische Physik und Polymerphysik
CPP 15: POSTER: Polymers and Biomaterials
CPP 15.5: Poster
Tuesday, March 9, 2004, 17:00–19:00, B
Chemical Modification of microphase-separated Triblock Terpolymer Films — •Kristin Schmidt, Sabine Ludwigs, Andrej Voronv, Robert Magerle, and Georg Krausch — Physikalische Chemie II, Universität Bayreuth, Bayreuth, Germany
In this presentation we discuss a polystyrene-b-poly(2-vinylpyridine)-b-poly(tertbutylme thacrylate) triblock terpolymer (SVT) exhibiting a core-shell cylinder structure in bulk (φPS=0.16, φP2VP=0.21, φPtBMA=0.63, Mw=140 k, Mw/Mn=1.02) which was synthesized via sequential living anionic polymerization1.
After annealing in controlled solvent vapour atmosphere thin films of these triblock terpolymer self-assemble into a highly ordered perforated lamellae structure with PS-core and a P2VP-shell in the PtBMA matrix phase.
A chemical modification of the poly(tertbutylmethacrylate) matrix phase to poly(methacrylic acid) via acid-catalyzed saponification leads to a pH-responsive nanostructure which was investigated with scanning force microscopy in aqueous environment. Furthermore, we show that the perforated lamella might serve as a lithographic mask by selective UV-depolymerization of the poly(tertbutylmethacrylate) matrix phase2.
1 Ludwigs, S.; Böker, A.; Abetz, V.; Müller, A.H.E.; Krausch, G. Polymer 2003, 44, 6815
2 Ludwigs, S.; Böker, A.; Voronov, A.; Rehse, N.; Magerle, R.; Krausch, G. Nature Materials 2003, 2, 744