Charge‐Separated and Lewis Paired Metal–Organic Framework for Anion Exchange and CO₂ Chemical Fixation

Abstract

Charge-separated metal-organic frameworks (MOFs)a re au nique class of MOFs that can possess added properties originating from the exposed ionic species. A new charge-separated MOF,n amely,U NM-6 synthesized from atetrahedral borate ligand and Co 2 + cation is reported herein. UNM-6c rystalizes into the highly symmetric P43n space group with fourfold interpenetration, despite the stoichiometrici mbalance between the Ba nd Co atoms,w hich also leads to loosely bound NO 3 À anions within the crystal structure. These NO 3 À ions can be quantitatively exchangedw ith various other anions, leadingt o Lewis acid (Co 2 +)a nd Lewis base (anions) pairs within the pores and potentially cooperative catalytic activities.F or example, UNM-6-Br,t he MOF after anion exchange with Br À anions, displays high catalytic activity and stability in reactions of CO 2 chemical fixation into cyclic carbonates. The field of metal-organic framework (MOF) has expanded at an incredible rate with constantly emerging new MOF structures possessing tailor-designed surface areas and functionalities, pore sizes and shapes,a nd pore volumes for am yriado f promisinga pplications. [1-9] The majority of existing MOFs con

Nonredox CO2 Fixation in Solvent-Free Conditions Using a Lewis Acid Metal–Organic Framework Constructed from a Sustainably Sourced Ligand

“…While a number of MOF-based catalysts have been explored for CO 2 epoxidation reactions in recent times, a majority of such MOFs either consist of ligands derived from nonrenewable sources such as fossil fuels, , or are constructed using complex linkers, , which are synthetically challenging and therefore not scalable. Figure shows a comparison of various MOF catalysts toward CO 2 epoxidation with our best UOW-1 catalyst.…”

Free Volume and Permeability of Mixed Matrix Membranes Made from a Terbutil-M-terphenyl Polyamide and a Porous Polymer Network

“…In this context, a wide variety of filler materials has been used as fillers to manufacture these novel materials, including hyper-crosslinked polymers [ 13 ], metal-organic frameworks [ 14 , 15 ], zeolitic imidazolate frameworks [ 9 , 16 ], porous aromatic frameworks [ 17 ], porous polymer networks (PPNs) [ 18 ], etc. These fillers have been shown to enhance the gas transport properties of polymer matrixes.…”

Carboxymethyl Cellulose/Zn-Organic Framework Down-Regulates Proliferation and Up-Regulates Apoptosis and DNA Damage in Colon and Lung Cancer Cell Lines

“…MOF porosity may be adjusted using a variety of techniques, including ex situ and in situ operations. Different methodologies may be used to create MOFs with hierarchical porous architectures [ 37 , 38 , 39 ]. Water remediation [ 40 ], adsorption [ 41 ], pollutant removal [ 42 ], catalysis [ 43 ], biocatalysis [ 44 ], nanomedicine [ 45 ], biosensors [ 46 ], energy source creation [ 47 ], fuel cells [ 48 ], and environmental-based applications [ 49 ] have all used MOFs.…”