3D Hydrogen‐Bonded Organic Framework Assembled from 1D Coordination Polymers for Efficient Gas Dehydration

作者：Yingzhi He, Lingyao Wang, Yunjia Jiang, Guangzu Xiong, Banglin Chen, Yuanbin Zhang · 发表于：Angewandte Chemie International Edition · 年份：2025 · DOI：10.1002/anie.202515257 · 被引用次数：8 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Covalent Organic Framework Applications、Luminescence and Fluorescent Materials

Abstract Two ‐(2D) and three‐dimensional (3D) porous coordination polymers have been extensively explored for their porous nature and thus gas separation, but one‐dimensional (1D) materials remain much less explored due to their reliance on weaker, non‐covalent interactions to sustain the permanent porosity. Recent significant advances on the construction of porous hydrogen‐bonded organic frameworks (HOFs) through synergistic weak interactions have provided us with the promise and motivated us to explore porous HOFs using 1D coordination polymers (CPs), and their multifunctional properties. In this work, we present such a HOF, [Cu(bpy)(H 2 PO 4 )∙H 2 O] n (ZNU‐30), constructed from a linear CP via hydrogen bonds, C─H⋯π, and π–π interactions. Upon thermal activation at 373 K under vacuum, ZNU‐30 undergoes a reversible single‐crystal‐to‐single‐crystal transformation, yielding ZNU‐30a with 1D channels. Notably, ZNU‐30a exhibits exceptional hydrophilicity, featuring considerable water uptake at low humidity, rapid adsorption–desorption kinetics, mild regeneration conditions, and outstanding cycling stability over 100 adsorption–desorption cycles. Single‐component gas adsorption isotherms reveal unique molecular sieving behavior, with preferential adsorption of water (100 mg g −1 ) over CO 2 and C 1 ─C 3 alkene/alkanes (CH 4 , C 2 H 4 , C 2 H 6 , C 3 H 6 , and C 3 H 8 ) at 298 K. Single‐crystal structural analysis and DFT calculations indicate that the selective adsorption of H 2 ...