ArticleAdvanced science (Weinheim, Baden-Wurttemberg, Germany)2026
Architecture-Engineered Semi-Crystalline Microporous Polymer Membranes for Precise Molecular Separation.
Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Amorphous polymer membranes typically suffer from low fractional free volume (FFV) due to structural flexibility, limiting separation performance and operational stability. Herein, we propose a strategy that constrains segmental motion by π-π-driven ordered stacking. Guided by Random Forest (RF) analysis of substructure marginal contributions, we selected a pre-existing high FFV aromatic substructure (p-terphenyl) and, inspired by articular joints, assembled it into rigid π-π-stacked domains linked by flexible amide units, creating a semi-crystalline membrane (DATP) characterized by short-range order embedded within long-range disorder. Organic-organic interfacial polymerization (OOIP) yields this scalable network, further reducing transport resistance by tuning ordered and disordered domain arrangements. The DATP membrane features rigidly interconnected channels, increasing FFV by 14% to 35.5% compared to the amorphous membrane (DAB), while reducing interconnected volume loss during operation by 14.3%. This achieves a record-high methanol permeability of 2779 L m
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