Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 30, 2025
Abstract Microporous membranes featuring 3D nanochannels present a compelling avenue for energy‐efficient liquid separations, attributable to their tunable interconnected through‐pore structures. However, the rational design of 3D‐nanochannel that simultaneously achieve high permeance and selectivity remains challenge, arising from scarcity appropriate molecular building blocks reliance on empirical synthetic methods. Herein, an innovative polyacylhydrazone (PAH) membrane with unique pore‐interconnected structures is constructed porous hydrogel using contorted tetrahedral aldehydes (TFS) monomers via in situ interface‐confined strategy. Manipulation side alkyl chain lengths within terephthalohydrazide (TPH) derivates enabled enhancement microporosity pore environment PAH nanofilms. Molecular dynamics simulations revealed TPH EO linkers higher reactivity moderate steric hindrance facilitate superior interconnectivity sharpened size distributions. The resulting achieved exceptional methanol permeances 10.1 L m −2 h −1 bar small weight cut‐offs 310 Da, outperforming state‐of‐the‐art polyamide membranes. This further translated into outstanding capability fractionation active pharmaceutical ingredients organic solvent systems. work demonstrates efficacy developing high‐microporosity tailored nanochannels, underscoring potential microporous accurate separations.
Language: Английский