Self-healing mixed matrix membranes containing metal–organic frameworks. Issue 41 (10th October 2022)

• Record Type: Journal Article
• Authors: Mondal, Prantik; Cohen, Seth M.
• Is Part Of: Chemical science. Volume 13:Issue 41(2022)
• Page Start: 12127
• Page End: 12135
• Publication Date: 2022-10-10
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2sc04345a
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : Self-healable mixed-matrix membranes (MMMs) are described with adjustable mechanical strength, dynamic covalent chemistry, and metal–organic frameworks (MOFs) that degrade a toxic chemical warfare agent (CWA) simulant. Abstract : Mixed-matrix membranes (MMMs) provide a means to formulate metal–organic frameworks (MOFs) into processable films that can help to advance their use in various applications. Conventional MMMs are inherently susceptible to craze or tear upon exposure to impact, cutting, bending, or stretching, which can limit their intended service life and usage. Herein, a simple, efficient, and scalable in situ fabrication approach was used to prepare self-healing MMMs containing Zr(iv )-based MOFs. The ability of these MMMs to self-heal at room temperature is based on the reversible hydrolysis of boronic-ester conjugates. Thiol–ene 'photo-click' polymerization yielded robust MMMs with ∼30 wt% MOF loading and mechanical strength that varied based on the size of MOF particles. The MMMs could undergo repeated self-healing with good retention of mechanical strength. In addition, the MMMs were catalytically active toward the degradation of the chemical warfare agent (CWA) simulant dimethyl-4-nitrophenyl phosphate (DMNP) with no change in activity after two damage-healing cycles.