Self-assembly of block copolymer micelles directed by metal-ligand interactions

POLY 8

Pierre Guillet, guillet@chim.ucl.ac.be1, Charles-André Fustin, fustin@chim.ucl.ac.be1, Christina Ott, c.ott@tue.nl2, Ulrich S. Schubert, u.s.schubert@tue.nl3, and Jean-François Gohy, gohy@chim.ucl.ac.be1. (1) Unité de Chimie des Matériaux Inorganiques et Organiques (CMAT), Université catholique de Louvain, Place Louis Pasteur, 1, B-1348 Louvain-la-Neuve, Belgium, (2) Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology, PO Box 513, Eindhoven, 5600 MB, Netherlands, (3) Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute, PO Box 513, Eindhoven, 5600 MB, Netherlands
We demonstrate that the addition of metal ions to micelles formed by alpha-terpyridine-poly(t-butylacrylate)-block-poly(styrene) (]-PtBA-b-PS) copolymer in ethanol, and consisting of a PS core and PtBA coronal chains with terpyridine ligands at their extremity, allows to tune their hydrodynamic radius by changing the conformation of the coronal chains, to create hierarchical self-assembly of isolated micelles into larger structures by promoting inter-micellar connections through metal-ligand complexation, and finally to add a third layer in the micellar structure by complexing a terpyridine-functionalized third block onto the initial micelles. We believe that this new approach significantly broaden the scope of utilization of metal-ligands complexes in self-assembled micellar systems.
 

Metal-Containing and Metallo-Supramolecular Polymers and Materials
8:20 AM-11:35 AM, Sunday, August 19, 2007 Westin Boston Waterfront -- Stone, Oral

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007