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Lipophilic Polyelectrolyte Gel Derived from Phosphonium Borate Can Absorb Wide Range of Organic Solvents

Abstract

Herein, we demonstrate a polyelectrolyte gel which can absorb wide range of organic solvent from dimethylsulfoxide (DMSO, permittivity: ε = 47.0) to tetrahydrofuran (ε = 5.6). The gel consists of polystyrene chain with small amount (~5 mol%) of lipophilic electrolyte derived from triphenylphosphonium tetraaryl borate. The swelling ability of the polyelectrolyte gel was higher than that derived from alkyl ammonium tetraaryl borate previously reported by us, which is attributed higher compatibility with organic solvent, as well as dissociating ability, of the triphenyl phosphonium salt. The role of ionic moiety was additionally confirmed by post modification of the polyelectrolyte gel via conventional Wittig reaction, resulting in nonionic gel. Our findings introduced here will lead to a clear-cut molecular design for polyelectrolyte gel absorbing all solvents.

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Publication details

The article was received on 13 Sep 2017, accepted on 07 Dec 2017 and first published on 07 Dec 2017


Article type: Paper
DOI: 10.1039/C7SM01841J
Citation: Soft Matter, 2017, Accepted Manuscript
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    Lipophilic Polyelectrolyte Gel Derived from Phosphonium Borate Can Absorb Wide Range of Organic Solvents

    S. Sunaga, K. Kokado and K. Sada, Soft Matter, 2017, Accepted Manuscript , DOI: 10.1039/C7SM01841J

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