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Ultralarge Free-Standing Imine-Based Covalent Organic Framework Membranes Fabricated via Compression.

ABSTRACT: Demand continues for processing methods to shape covalent organic frameworks (COFs) into macroscopic objects that are needed for their practical applications. Herein, a simple compression method to prepare large-scale, free-standing homogeneous and porous imine-based COF-membranes with dimensions in the centimeter range and excellent mechanical properties is reported. This method entails the compression of imine-based COF-aerogels, which undergo a morphological change from an elastic to plastic material. The COF-membranes fabricated upon compression show good performances for the separation of gas mixtures of industrial interest, N₂ /CO₂ and CH₄ /CO₂ . It is believed that the new procedure paves the way to a broader range of COF-membranes.

SUBMITTER: Martin-Illan JA

PROVIDER: S-EPMC8895050 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

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Ultralarge Free-Standing Imine-Based Covalent Organic Framework Membranes Fabricated via Compression.

Martín-Illán Jesús Á JÁ Suárez José Antonio JA Gómez-Herrero Julio J Ares Pablo P Gallego-Fuente Daniel D Cheng Youdong Y Zhao Dan D Maspoch Daniel D Zamora Félix F

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20220117 7

Demand continues for processing methods to shape covalent organic frameworks (COFs) into macroscopic objects that are needed for their practical applications. Herein, a simple compression method to prepare large-scale, free-standing homogeneous and porous imine-based COF-membranes with dimensions in the centimeter range and excellent mechanical properties is reported. This method entails the compression of imine-based COF-aerogels, which undergo a morphological change from an elastic to plastic ...[more]

PMID: 35038248

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