Two-Dimensional Graphene-Based Potassium Channels Built at an Oil/Water Interface.

ABSTRACT: Graphene-based laminar membranes exhibit remarkable ion sieving properties, but their monovalent ion selectivity is still low and much less than the natural ion channels. Inspired by the elementary structure/function relationships of biological ion channels embedded in biomembranes, a new strategy is proposed herein to mimic biological K⁺ channels by using the graphene laminar membrane (GLM) composed of two-dimensional (2D) angstrom(Å)-scale channels to support a simple model of semi-biomembrane, namely oil/water (O/W) interface. It is found that K⁺ is strongly preferred over Na⁺ and Li⁺ for transferring across the GLM-supported water/1,2-dichloroethane (W/DCE) interface within the same potential window (-0.1-0.6 V), although the monovalent ion s

SUBMITTER: Wang X 

PROVIDER: S-EPMC10419551 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature