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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 14: Poster: Interfaces and Thin Films

CPP 14.27: Poster

Montag, 22. März 2010, 16:30–18:00, Poster C

Supramolecular assembly of poly(styrene)-b-poly(4-vinylpyridine) and 1-pyrenebutyric acid in thin film and their use for nanofabrication — •Biplab Kumar Kuila and Manfred Stamm — Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, D-01069 Dresden, Germany.

Block copolymer(BCP)based supramolecules are prepared by attaching small additive molecules in to the side chains of one of the BCP blocks1. BCP-based supramolecules also microphase separate similar to block copolymer into arrays of microdomains, tens of nanometers in size. Here, we have studied the supramolecular assembly of 1-pyrenebutyric acid(PBA)with PS-b-P4VP [Poly(styrene-block-(4-vinyl pyridine). The supramolecular assembly of PS-b-P4VP with PBA resulted the switching of block copolymer morphology from cylinder to lamella in thin film due to compositional change.PBA will make supramolecules with the P4VP block due to strong hydrogen bonding between the carboxylic group of 1-pyrenebutyric acid and pyridine ring of P4VP. After fabricating the thin film from the supramolecules, the minor component PBA can be easily removed by dissolving the thin film in ethanol to transform the block copolymer thin film into nanotemplate or membrane for practical application. We have also observed that these nanotemplates can be used for the fabrication of arrays of nanowire of different functional material like metal or semiconductor. Reference: 1.Sidorenko, A.; Tokarev, I.; Minko, S.; Stamm, M. J. Am. Chem. Soc. 2003, 125, 12211.