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Issue 7, 2010
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Synthesis of thermoresponsive phenyl- and naphthyl-terminated poly(NIPAM) derivatives using RAFT and their complexation with cyclobis(paraquat-p-phenylene) derivatives in water

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Abstract

A series of poly(N-isopropylacrylamide)s (poly(NIPAM)s) have been synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization from a functionalized chain transfer agent (CTA) bearing either dialkoxynaphthalene or dialkoxyphenylene moieties. After demonstrating the controlled character of the RAFT polymerization in the presence of these CTAs, well-defined functionalized poly(NIPAM)s with low PDIs and similar molecular weights were selected and subjected to lower critical solution temperature (LCST) measurements using UV-vis spectroscopy. We have investigated the complexation of the polymers with the tetracationic cyclophane cyclobis(paraquat-p-phenylene) (CBPQT4+) and specifically the role the counter anion (Cl, Br, I) of the cyclophane has on the LCST. Moreover, we have shown that the addition of a competing end-functionalized naphthalene poly(NIPAM) guest to a (CBPQT4+)–end-functionalized phenylene poly(NIPAM) complex results in the dethreading of the original architecture.

Graphical abstract: Synthesis of thermoresponsive phenyl- and naphthyl-terminated poly(NIPAM) derivatives using RAFT and their complexation with cyclobis(paraquat-p-phenylene) derivatives in water

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Publication details

The article was received on 18 Mar 2010, accepted on 14 Apr 2010 and first published on 21 May 2010


Article type: Paper
DOI: 10.1039/C0PY00085J
Citation: Polym. Chem., 2010,1, 1024-1029
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    Synthesis of thermoresponsive phenyl- and naphthyl-terminated poly(NIPAM) derivatives using RAFT and their complexation with cyclobis(paraquat-p-phenylene) derivatives in water

    J. Bigot, D. Fournier, J. Lyskawa, T. Marmin, F. Cazaux, G. Cooke and P. Woisel, Polym. Chem., 2010, 1, 1024
    DOI: 10.1039/C0PY00085J

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