Abstract
A two-fold interpenetrated metal-organic framework{[Zn(bpydb)(H2O)](DMF)0.75} (1, DMF=N,N-dimethylformamide), involving the aromatic trigonal heterofunctional ligand 4,4′-(4,4′-bipyridine-2,6-diyl) dibenzoic acid (bpydbH2) and Zn(II) metal center has been successfully synthesized under solvothermal condition. The structure of 1 was characterized by single-crystal X-ray diffraction, which shows a two-fold interpenetrated 3-connected framework with ThSi2-type topology. The luminescent sensing of different nitro-explosives was investigated, and the results indicated that 1 could behave as an effective sensor for detecting picric acid (PA) with high selectivity and sensitivity. Furthermore, the quenching mechanism has also been investigated in detail.
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