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., & Barner-Kowollik, C. (2012) Supramolecular three-armed star polymers via cyclodextrin host-guest self-assembly. Polymer Chemistry, 3(11).

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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 D 2O. 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. © 2012 The Royal Society of Chemistry.

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ID Code: 99323
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By :39
Export Date: 5 September 2016
Correspondence Address: Ritter, H.; Lehrstuhl für Präparative Polymerchemie, Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine Universität, Universitätsstrasse 1, Geb. 26.33.00, 40225 Düsseldorf, Germany; email:
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Keywords: Chain transfer agents, Complex formations, Cyclodextrin core, Elevated temperature, Host-guests, Inclusion complex, N ,n-dimethylacrylamide, Reversible addition-fragmentation chain transfer polymerization, Rotating frame nuclear Overhauser effect spectroscopy, Star polymers, Supramolecular self-assemblies, Turbidity measurements, Acrylic monomers, Dynamic light scattering, Self assembly, Supramolecular chemistry, Turbidity, Polymers
DOI: 10.1039/c2py20293j
ISSN: 17599954
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 22 Sep 2016 04:50
Last Modified: 04 Oct 2016 23:56

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