Optimizing selectivity via membrane molecular packing manipulation for simultaneous cation and anion screening.

ABSTRACT: Advancing membranes with enhanced solute-solute selectivity is essential for expanding membrane technology applications, yet it presents a notable challenge. Drawing inspiration from the unparalleled selectivity of biological systems, which benefit from the sophisticated spatial organization of functionalities, we posit that manipulating the arrangement of the membrane's building blocks, an aspect previously given limited attention, can address this challenge. We demonstrate that optimizing the face-to-face orientation of building blocks during the assembly of covalent-organic-framework (COF) membranes improves ion-π interactions with multivalent ions. This optimization leads to extraordinary selectivity in differentiating between monovalent cations and anions from their multivalent counte

SUBMITTER: Meng QW 

PROVIDER: S-EPMC11423885 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature