Monovalent anion-selective membranes fabricated via in situ interfacial polymerization.

ABSTRACT: Developing monovalent anion-selective membranes (MAPMs) faces challenges, including the trade-off between flux and selectivity, membrane stability, and cost-effective fabrication. Overcoming these requires advanced material design and scalable techniques. Here, we introduce in situ interfacial polymerization (ISIP) to prepare MAPMs. Base membranes are synthesized via superacid polymerization and modified with anion channels and -NH₂ groups. During ISIP, trimesoyl chloride reacts with surface -NH₂ groups, forming a partially crosslinked structure with -COOH groups to regulate ion transport via electrostatic interactions. This results in low membrane resistance (4.7 Ω cm²) and selective transport of weakly hydrated ions (Cl^-, Br^-, NO

SUBMITTER: Ul Afsar N 

PROVIDER: S-EPMC12521509 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature