Complexation of thermoresponsive dialkoxynaphthalene end-functionalized poly(oligoethylene glycol acrylate)s with CBPQT4+in water

Yeniad, B., Ryskulova, K., Fournier, D., Lyskawa, J., Cooke, G. , Woisel, P. and Hoogenboom, R. (2016) Complexation of thermoresponsive dialkoxynaphthalene end-functionalized poly(oligoethylene glycol acrylate)s with CBPQT4+in water. Polymer Chemistry, 7(22), pp. 3681-3690. (doi:10.1039/c6py00303f)

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Abstract

Four different oligoethylene glycol acrylates (OEGA), namely hydroxypropylacrylate (HPA), methoxy diethylene glycol acrylate (mDEGA), methoxy triethylene glycol acrylate (mTEGA) and 2-hydroxyethylacrylate (HEA) were homopolymerized via RAFT polymerization employing a naphthalene functionalized chain transfer agent resulting in thermoresponsive naphthalene-functionalized POEGAs with different hydrophilicities. Supramolecular inclusion complexes of these POEGAs with electron-deficient cyclophane cyclobis(paraquat-p-phenylene) tetrachloride (CBPQT4+) in water were studied. The association constants (Ka) were determined to study the effect that polymer hydrophilicity has on the Ka and results indicated that the nature of the polymer did not significantly influence the complexation strength and the association is mostly enthalpy driven. The impact of temperature on the host–guest complexes was also investigated. A continuous partial thermally induced dissociation of complexes was observed upon raising the temperature with a more distinct decrease in complexation around the cloud point temperature (TCP) of the POEGA employed, indicating the importance of the polymer phase transition for tuning the recognition properties of dialkoxynaphthalene end-decorated poly(oligoethylene glycol acrylate)s in water.

Item Type:Articles
Additional Information:BY, KR and RH greatly acknowledge Ghent University, FWO-Flanders and BELSPO (IAP VII/5 Functional Supramolecular Systems FS2) for financial support. PW gratefully acknowledges the financial support from the Agence Nationale de la Recherche for funding (STRAPA project, ANR-12-BS08- 0005).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cooke, Professor Graeme
Authors: Yeniad, B., Ryskulova, K., Fournier, D., Lyskawa, J., Cooke, G., Woisel, P., and Hoogenboom, R.
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
Copyright Holders:Copyright © 2016 Royal Society of Chemistry
First Published:First published in Polymer Chemistry 7(22):3681-3690
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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