Sorption Properties and Nitroaromatic Explosives Sensing Based on Two Isostructural Metal–Organic Frameworks

Abstract

We firstly designed and synthesized a new semi-rigid tripodal ligand with tetrazole groups, 1, 3, 5-tri(4-(2H-tetrazol-5-yl)phenoxy)benzene (H 3 TTPB). Two isostructural microporous metal-organic frameworks (MOFs), namely [Cu 3 (TTPB) 2 (H 2 O) 6 ]·5DMF (JUC-130) and [Cd 3 (TTPB) 2 (H 2 O) 6 ]·6DMF (JUC-131) (JUC = Jilin University, China), were successfully synthesized under solvothermal reactions based on this ligand, which both possess two-dimensional (2D) frameworks based on similar trinuclear metal centers as secondary building units (SBUs). H 3 TTPB was designed as the organic building block, not only because itis suitable to construct functionalized microporous frameworks with numerous nitrogen atoms, but also by reason of its blue luminescent emission. Gas sorption measurements indicated that they are both microporous frameworks. JUC-130 showed a high stability in water and selective sorption capabilities for alcohol and water vapors, which may be further used for the separation

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