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A Robust Multifunctional Eu6‑Cluster Based Framework for Gas Separation and Recognition of Small Molecules and Heavy Metal Ions

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journal contribution
posted on 26.09.2019 by Falu Hu, Zhengyi Di, Mingyan Wu, Maochun Hong, Jing Li
We report a multifunction lanthanide-based metal organic framework (Eu-SPFF) constructed by a hexanuclear Eu­(III) cluster and a tetracarboxylate ligand 4,4′,4″,4‴-(9,9′-spirobi­[fluorene]-2,2′,7,7′-tetrayl)­tetrakis­(2-fluorobenzoic acid) (H4SPFF). The (4,12)-connected ftw topological three-dimensional structure contains octahedral and cubic cages with permanent porosity (BET: 1891.3 m2 g–1). Eu-SPFF not only exhibits high performance for the separation of light hydrocarbons but also shows highly selective recognition of 4-nitrophenol and Cu2+ ions.