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Thermo-responsive metallo-supramolecular gels based on terpyridine end-functionalized amphiphilic diblock copolymers

Published online by Cambridge University Press:  10 April 2013

Jérémy Brassinne ,
Charles-André Fustin  and
Jean-François Gohy
Jérémy Brassinne
Affiliation:
Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter (BSMA), Université catholique de Louvain (UCL), Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium.
Charles-André Fustin*
Affiliation:
Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter (BSMA), Université catholique de Louvain (UCL), Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium.
Jean-François Gohy*
Affiliation:
Institute of Condensed Matter and Nanosciences (IMCN), Bio and Soft Matter (BSMA), Université catholique de Louvain (UCL), Place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium.
*
*E-mail: jean-francois.gohy@uclouvain.be, charles-andre.fustin@uclouvain.be Tel./Fax: +32-10-479269.
*E-mail: jean-francois.gohy@uclouvain.be, charles-andre.fustin@uclouvain.be Tel./Fax: +32-10-479269.
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Abstract

A thermo-responsive hydrogel was prepared on the basis of terpyridine endfunctionalized polystyrene-block-poly(N-isopropylacrylamide) diblock copolymer. As a first level of assembly, the copolymer was dissolved in a selective solvent to yield micelles bearing terpyridine ligands at the extremity of the coronal chains. The second level of self-assembly was triggered upon addition of metal ions to the micellar solution. Mechanical properties of the accordingly obtained micellar gel were finally characterized by rotational rheometry, below and above the lower critical solution temperature.

Keywords

self-assemblypolymerstress/strain relationship

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