Host–guest modulation of the micellization of a tetrathiafulvalene-functionalized poly(N-isopropylacrylamid)

Sambe, L., Stoffelba, F., Lyskawa, J., Delattre, F., Fournier, D., Bouteiller, L., Charleux, B., Cooke, G. and Woisel, P. (2011) Host–guest modulation of the micellization of a tetrathiafulvalene-functionalized poly(N-isopropylacrylamid). Macromolecules, 44(16), pp. 6532-6538. (doi:10.1021/ma2009854)

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Publisher's URL: http://dx.doi.org/10.1021/ma2009854

Abstract

The aqueous solution properties of amphiphilic tetrathiafulvalene (TTF) end-functionalized poly(N-isopropylacrylamide) (PNIPAM) derivative 1 have been studied. Fluorescence spectroscopy, dynamic light scattering (DLS) and differential scanning calorimetry (Nano-DSC) were used to monitor the temperature-induced micellization and showed that 1 underwent two successive phase transitions corresponding to unimer-to-micelle and lower critical solution temperature (LCST) transitions, respectively. We have investigated the complexation properties of the TTF unit toward cyclobis(paraquat-p-phenylene) (CBPQT4+) or the randomly methylated β-cyclodextrin (RAMEB) to manipulate the amphiphilicity of 1 and to control the unimer-to-micelle phase transition by forming pseudorotaxane-like architectures. For the RAMEB complex with 1, the addition of a competitive guest such as 1-adamantanol resulted in the restoration of amphiphilicity of polymer 1 and consequently the reformation of micelles.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cooke, Professor Graeme
Authors: Sambe, L., Stoffelba, F., Lyskawa, J., Delattre, F., Fournier, D., Bouteiller, L., Charleux, B., Cooke, G., and Woisel, P.
Subjects:Q Science > QD Chemistry
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Macromolecules
Publisher:American Chemical Society
ISSN:0024-9297
ISSN (Online):1520-5835

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