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Catanionic Coacervate Droplets as a Surfactant-Based Membrane-Free Protocell Model

Abstract : We report on the formation of surfactant-based complex catanionic coacervate droplets in mixtures of decanoic acid and cetylpyridinium chloride or cetyltrimethylammonium bromide. We show that coacervation occurs over a broad range of composition, pH, and ionic strength. The catanionic coacervates consist of elongated micelles, sequester a wide range of solutes including water-soluble organic dyes, polysaccharides, proteins, enzymes, and DNA, and can be structurally stabilized by sodium alginate or gelatin-based hydrogelation. These results suggest that catanionic coacervates could be exploited as a novel surfactant-based membrane- free protocell model.
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Contributor : Nadine Laffargue <>
Submitted on : Tuesday, March 30, 2021 - 2:54:48 PM
Last modification on : Monday, May 10, 2021 - 2:58:01 PM


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Jean-Paul Douliez, Nicolas Martin, Cédric Gaillard, Thomas Beneyton, Jean-Christophe Baret, et al.. Catanionic Coacervate Droplets as a Surfactant-Based Membrane-Free Protocell Model. Angewandte Chemie International Edition, Wiley-VCH Verlag, 2017, 56 (44), pp.13689 - 13693. ⟨10.1002/anie.201707139⟩. ⟨hal-01742806⟩



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