High Emission Zinc Metal‐Organic Framework for Sensitive and Selective Detection of Fe3+, Cr6+ and Nitrofurazone Antibiotic

Based on 3-bpmh ligand (3-bpmh=N, N'-bis-pyridin-3-ylmethylene-hydrazine) and H(2)HPA (H(2)HPA=Homophthalic acid), a new complex, namely, [Zn(HPA)(3-bpmh)](n) (1), was synthesized. Powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), infrared spectroscopy (IR) and elemental analysis (EA) were used to characterize the crystal structure. Complex 1 presents a 2D planar structure, which accumulates into a 3D spatial structure through C-H- horizontal ellipsis pi interactions. Complex 1 has multi-response photoluminescence sensing characteristic. It has excellent selectivity and sensitivity to Fe3+, CrO42- and Cr2O72- in domestic sewage and Nitrofurazone (NFZ) antibiotic. In addition, the fluorescence quenching mechanisms were also discussed.