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Current Trends in Metal–Organic and Covalent Organic Framework Membrane Materials
Author(s) -
Hosseini Monjezi Bahram,
Kutonova Ksenia,
Tsotsalas Manuel,
Henke Sebastian,
Knebel Alexander
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202015790
Subject(s) - membrane , stacking , zeolitic imidazolate framework , materials science , metal organic framework , gas separation , porosity , covalent bond , template , nanotechnology , polymer , imidazolate , covalent organic framework , chemical engineering , nanopore , organic chemistry , chemistry , composite material , adsorption , engineering , biochemistry
Abstract Metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) have been thoroughly investigated with regards to applications in gas separation membranes in the past years. More recently, new preparation methods for MOFs and COFs as particles and thin‐film membranes, as well as for mixed‐matrix membranes (MMMs) have been developed. We will highlight novel processes and highly functional materials: Zeolitic imidazolate frameworks (ZIFs) can be transformed into glasses and we will give an insight into their use for membranes. In addition, liquids with permanent porosity offer solution processability for the manufacture of extremely potent MMMs. Also, MOF materials influenced by external stimuli give new directions for the enhancement of performance by in situ techniques. Presently, COFs with their large pores are useful in quantum sieving applications, and by exploiting the stacking behavior also molecular sieving COF membranes are possible. Similarly, porous polymers can be constructed using MOF templates, which then find use in gas separation membranes.