title: Moisture-Stable Zn(II) Metal-Organic Framework as a Multifunctional Platform for Highly Efficient CO2 Capture and Nitro Pollutant Vapor Detection.
abstract: A moisture-stable three-dimensional (3D) metal-organic framework (MOF), {(Me2NH2)[Zn2(bpydb)2(ATZ)](DMA)(NMF)2}n (1, where bpydb = 4,4'-(4,4'-bipyridine-2,6-diyl)dibenzoate, ATZ = deprotonated 5-aminotetrazole, DMA = N,N-dimethylacetamide, and NMF = N-methylformamide), with uncoordinated N-donor sites and charged framework skeleton was fabricated. This MOF exhibits interesting structural dynamic upon CO2 sorption at 195 K and high CO2/N2 (127) and CO2/CH4 (131) sorption selectivity at 298 K and 1 bar. Particularly, its CO2/CH4 selectivity is among the highest MOFs for selective CO2 separation. The results of Grand Canonical Monte Carlo (GCMC) simulation indicate that the polar framework contributes to the strong framework-CO2 binding at zero loading, and the tetrazole pillar contributes to the high CO2 uptake capacity at high loading. Furthermore, the solvent-responsive luminescent properties of 1 indicate that it could be utilized as a fluorescent sensor to detect trace amounts of nitrobenzene in both solvent and vapor systems.
authors.affiliation: Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P. R. China.
authors.forename: Di-Ming
authors.initials: DM
authors.lastname: Chen
authors.affiliation: Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P. R. China.
authors.forename: Jia-Yue
authors.initials: JY
authors.lastname: Tian
authors.affiliation: Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P. R. China.
authors.forename: Min
authors.initials: M
authors.lastname: Chen
authors.affiliation: Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P. R. China.
authors.forename: Chun-Sen
authors.initials: CS
authors.lastname: Liu
authors.affiliation: Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P. R. China.
authors.forename: Miao
authors.initials: M
authors.lastname: Du
keywords: GCMC simulation; dynamic structure; metal−organic framework; moisture stability; nitrobenzene vapor detection; selective CO2 sorption