Host–Guest Modulation of the Micellization of a Tetrathiafulvalene‐Functionalized Poly( \textitN ‐isopropylacrylamide) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Macromolecules Année : 2011

Host–Guest Modulation of the Micellization of a Tetrathiafulvalene‐Functionalized Poly( \textitN ‐isopropylacrylamide)

Résumé

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.

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Chimie
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Dates et versions

hal-01696705 , version 1 (30-01-2018)

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Citer

Léna Sambe, François Stoffelbach, Joel Lyskawa, François Delattre, David Fournier, et al.. Host–Guest Modulation of the Micellization of a Tetrathiafulvalene‐Functionalized Poly( \textitN ‐isopropylacrylamide). Macromolecules, 2011, 44 (16), pp.6532-6538. ⟨10.1021/ma2009854⟩. ⟨hal-01696705⟩
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