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Article Dans Une Revue Polymer Chemistry Année : 2023

Photo-responsive disassembly of supramolecular polymer bottlebrushes in water

Résumé

We report the 5-step synthesis and self-assembly of an azobenzene-bisurea sticker flanked by two alkyl spacers and poly(ethylene oxide) arms. In the trans-azobenzene configuration, long nano-cylinders can be obtained by first molecularly dissolving the polymer in DMSO, followed by the slow addition of water. The addition of water triggers 1D self-assembly through a combination of strong, cooperative H-bonding between urea motifs and hydrophobic effects. UV-light irradiation triggers the photo-isomerization of azobenzene units into their non-planar cis configuration, rapidly and irreversibly disrupting the photo-responsive assemblies.

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Chimie
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Dates et versions

hal-04266473 , version 1 (31-10-2023)

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Luke Harvey, Jean-Michel Guigner, Laurent Bouteiller, Erwan Nicol, Olivier Colombani. Photo-responsive disassembly of supramolecular polymer bottlebrushes in water. Polymer Chemistry, 2023, ⟨10.1039/D3PY00963G⟩. ⟨hal-04266473⟩
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