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Switchable Hydrogels Obtained by Supramolecular Cross-Linking of Adamantyl-Containing LCST Copolymers with Cyclodextrin Dimers

Authors

  • Oliver Kretschmann,

    1. Heinrich-Heine-Universität Düsseldorf, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, 40225 Düsseldorf, Germany, Fax: (+49) 211-811-5840
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  • Soo Whan Choi Dr.,

    1. Heinrich-Heine-Universität Düsseldorf, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, 40225 Düsseldorf, Germany, Fax: (+49) 211-811-5840
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  • Masahiko Miyauchi Dr.,

    1. Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
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  • Itsuro Tomatsu,

    1. Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
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  • Akira Harada Prof. Dr.,

    1. Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
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  • Helmut Ritter Prof. Dr.

    1. Heinrich-Heine-Universität Düsseldorf, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstrasse 1, 40225 Düsseldorf, Germany, Fax: (+49) 211-811-5840
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  • LCST=lower critical solution temperature.

Abstract

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En route to intelligent hydrogels: Copolymers of N-isopropylacrylamide containing adamantyl groups can be cross-linked noncovalently with cyclodextrin dimers. This results in thermosensitive hydrogels with cloud points that are lower than those of the pure copolymers. Addition of monomeric methylated cyclodextrin results in an increase in the cloud points but has no significant influence on the viscosity of the copolymer solution.

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