Bisurea-Functionalized RAFT Agent: A Straightforward and Versatile Tool toward the Preparation of Supramolecular Cylindrical Nanostructures in Water

Gaëlle Mellot 1 Jean-Michel Guigner 2 Jacques Jestin 3, 4 Laurent Bouteiller 1 Francois Stoffelbach 1 Jutta Rieger 1
1 LCP - Chimie des polymères
SU - Sorbonne Université, CNRS - Centre National de la Recherche Scientifique : UMR7610, IPCM - Institut Parisien de Chimie Moléculaire
4 MMB - LLB - Matière molle et biophysique
LLB - UMR 12 - Laboratoire Léon Brillouin : IRAMIS/LLB/MMB
Abstract : We report a versatile and simple approach to produce cylindrical micelles by the direct dissolution of polymers in water. The developed strategy relies on a RAFT agent functionalized by a bisurea sticker that allowed to synthesize a series of α-bisurea-functionalized poly(N,N-dimethylacrylamide) (PDMAc), poly(acrylic acid) (PAA), polyacrylamide (PAM), and poly(2-(N,N-dimethylamino)ethyl acrylate) (PDMAEA) with number-average degrees of polymerization (DPn) varying from about 10 to 50. Their spontaneous self-assembly in water was studied by electron microscopy (cryo-TEM), neutron scattering (SANS), and calorimetry (ITC) analyses which showed that long cylindrical micelles are spontaneously formed in water. The crucial role of the bisurea sticker end-groups was established by comparison with the corresponding bisurea-free model polymers that only formed spherical micelles. Finally, we have shown that it is possible to trigger reversibly the assembly/disassembly of the nanofibers by pH changes.
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Journal articles
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https://hal.archives-ouvertes.fr/hal-02357488
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Submitted on : Sunday, November 10, 2019 - 11:40:15 AM
Last modification on : Thursday, November 14, 2019 - 1:38:36 AM

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Gaëlle Mellot, Jean-Michel Guigner, Jacques Jestin, Laurent Bouteiller, Francois Stoffelbach, et al.. Bisurea-Functionalized RAFT Agent: A Straightforward and Versatile Tool toward the Preparation of Supramolecular Cylindrical Nanostructures in Water. Macromolecules, American Chemical Society, 2018, 51 (24), pp.10214-10222. ⟨10.1021/acs.macromol.8b02156⟩. ⟨hal-02357488⟩

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