Swell and Destroy: A Metal–Organic Framework-Containing Polymer Sponge That Immobilizes and Catalytically Degrades Nerve Agents

Abstract

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Function–Topology Relationship in the Catalytic Hydrolysis of a Chemical Warfare Simulant in Two Zr‐MOFs

“…N 2 sorption isotherms measured at 77 Ki ndicated that Zr-fcu-tmuc and Zr-bcu-tmuc have Brunauer-Emmett-Teller (BET) surface areas of around1 480 and 758 m 2 g À1 ,r espectively,w hich are comparable to reportedv alues [35,37] (see Figure S4). Because Zr-MOFs have attracted intense interest as heterogeneous catalysts for the detoxificationo fO PNs, [38,39] the catalytic hydrolysis of DMNP (as an OPN simulant) was assessed on these two Zr-MOFs. Possessing the same organic and inorganic buildingb locks (tmuc 2À ligand and Zr 6 cluster), similar particle and pore aperture size, butd ifferent network topology,t hese two Zr-MOFs presented themselves as an interesting pair for a comparative catalytic study.…”

“…Because Zr‐MOFs have attracted intense interest as heterogeneous catalysts for the detoxification of OPNs, [38, 39] the catalytic hydrolysis of DMNP (as an OPN simulant) was assessed on these two Zr‐MOFs. Possessing the same organic and inorganic building blocks (tmuc 2− ligand and Zr 6 cluster), similar particle and pore aperture size, but different network topology, these two Zr‐MOFs presented themselves as an interesting pair for a comparative catalytic study.…”

Advances in applied supramolecular technologies

“…114,118 In recent work funded by the Defence Science and Technology Laboratories (Dstl), Holder, Blight and co-workers examined the immobilisation of a catalytic metal organic framework (MOF) inside a polymer sponge network. 119 This work combined the previously reported ability of styrenic poly high internal phase emulsions (pHIPEs) to swell and trap a range of OP and mustard series nerve agents 120 with the known propensity of zirconium MOFs to function as heterogeneous catalysts for the hydrolysis of OPs. 121 The authors prepared a composite material consisting of a styrene or vinyl based pHIPEs and zirconium MOF-808 at a loading of 25 wt% relative to the monomer weight.…”

Molecular Recognition of Nerve Agents and Their Organophosphorus Surrogates: Toward Supramolecular Scavengers and Catalysts

“…In addition to their ability to scoop and arrest toxic OPs by encapsulation, the polyoxometalates-Zr(IV) were shown to promote their hydrolysis in aqueous environments. Likewise, Blight and coworkers described [138] a composite polymeric material composed of polystyrene polymer containing Zr(IV) MOF catalysts. Remarkably, a block of this material was shown to act as an effective sponge to absorb VX (with minimal leaching) [139] and then promote its hydrolysis in the presence of water; note that even ambient humidity was found to be sufficient to promote the reaction.…”