Supramolecular three-armed star polymers via cyclodextrin host-guest self-assembly

Schmidt, B. V.K.J. , Rudolph, T., Hetzer, M., Ritter, H., Schacher, F. H. and Barner-Kowollik, C. (2012) Supramolecular three-armed star polymers via cyclodextrin host-guest self-assembly. Polymer Chemistry, 3(11), pp. 3139-3145. (doi:10.1039/c2py20293j)

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Abstract

Three-armed star polymers with a cyclodextrin core and polyacrylamide arms were prepared via inclusion complex formation. A novel adamantyl-functionalized chain transfer agent was utilized in the reversible addition–fragmentation chain transfer (RAFT) polymerization of N,N-dimethylacrylamide and N,N-diethylacrylamide to afford guest-functionalized polymers. In combination with a three-pronged β-cyclodextrin core, supramolecular self-assembly was exploited for the formation of star-shaped architectures. This was demonstrated via a combination of dynamic light scattering (DLS) and 2D rotating frame nuclear Overhauser effect spectroscopy (ROESY) in D2O. Furthermore, turbidity measurements in the case of PDEAAm showed a rise in the LCST of the system. The complex formation was shown to be reversible, as DLS at elevated temperatures (70 °C) indicated a complete disassembly of the star polymers.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Schmidt, Dr Bernhard
Authors: Schmidt, B. V.K.J., Rudolph, T., Hetzer, M., Ritter, H., Schacher, F. H., and Barner-Kowollik, C.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Polymer Chemistry
Publisher:Royal Society of Chemistry
ISSN:1759-9954
ISSN (Online):1759-9962
Published Online:25 May 2012

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