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)

Abstract

The aqueous solution properties of amphiphilic tetrathiafulvalene (TTF) end-functionalized poly(<i>N</i>-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-<i>p</i>-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