Synthesis of a Water-Stable Zn(II)-Based Metal-Organic Framework for Luminescence Detecting Fe3+ and 2,6-Dichloro-4-nitroaniline

A novel thermal-stable and water-stable Zn(II)-based metal-organic framework (MOF), [Zn-2(bcpp)(2)(1,4-bib)(2)]center dot 1.5H(2)O (1) was synthesized by solvothermal method based on 3,5-bis(4-carboxylphenoxy)pyridine (H(2)bcpp) and 1,4-bis(1-imidazoly)benzene (1,4-bib). Complex 1 belongs to the monoclinic system with space group I2/a, which exhibits a 1D tubular structure. The adjacent 1D tubular structures are interpenetrated with each other to obtain a 3D supramolecular structure. Moreover, complex 1 exhibits excellent photoluminescence property, which can be applied as a "turn-off" fluorescence probe to detect Fe3+ ion and pesticide 2,6-dichloro-4-nitroaniline in an aqueous solution with high selectivity and sensitivity.