Reversible pore gating in aqueous mixtures via external potential

Sela Samin; Yoav Tsori

doi:10.1016/j.colcom.2016.04.002

Reversible pore gating in aqueous mixtures via external potential

Sela Samin, Yoav Tsori

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We examine theoretically porous membranes in aqueous mixtures. We show that large membrane pores can be reversibly gated from 'off' (co-solvent-rich, poor conductor of ions and other solutes) to 'on' (water-rich, good conductor) states by an external potential. The transition voltage or charge for switching depends on the membrane hydrophilicity/hydrophobicity, the salt content, the preferential solvation of the salt ions, and the temperature. These parameters also determine whether the filling transition is abrupt or gradual.

Original language	English
Pages (from-to)	9-12
Number of pages	4
Journal	Colloids and Interface Science Communications
Volume	12
DOIs	https://doi.org/10.1016/j.colcom.2016.04.002
State	Published - 1 May 2016

ASJC Scopus subject areas

Biotechnology
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Colloid and Surface Chemistry
Materials Chemistry

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10.1016/j.colcom.2016.04.002

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abstract = "We examine theoretically porous membranes in aqueous mixtures. We show that large membrane pores can be reversibly gated from 'off' (co-solvent-rich, poor conductor of ions and other solutes) to 'on' (water-rich, good conductor) states by an external potential. The transition voltage or charge for switching depends on the membrane hydrophilicity/hydrophobicity, the salt content, the preferential solvation of the salt ions, and the temperature. These parameters also determine whether the filling transition is abrupt or gradual.",

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AB - We examine theoretically porous membranes in aqueous mixtures. We show that large membrane pores can be reversibly gated from 'off' (co-solvent-rich, poor conductor of ions and other solutes) to 'on' (water-rich, good conductor) states by an external potential. The transition voltage or charge for switching depends on the membrane hydrophilicity/hydrophobicity, the salt content, the preferential solvation of the salt ions, and the temperature. These parameters also determine whether the filling transition is abrupt or gradual.

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JO - Colloids and Interface Science Communications

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Reversible pore gating in aqueous mixtures via external potential

Abstract

ASJC Scopus subject areas

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