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A Novel Magnesium Metal–Organic Framework as a Multiresponsive Luminescent Sensor for Fe(III) Ions, Pesticides, and Antibiotics with High Selectivity and Sensitivity

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journal contribution
posted on 18.10.2018, 15:50 by Ning Xu, Qinghua Zhang, Baoshan Hou, Qian Cheng, Guoan Zhang
Iron­(III) ions play a vital role in living biological systems, while organic pollutants including pesticides and antibiotics pose a great threat to the ecological environment. Effective detection for these species is crucial for human health and environmental protection. In this work, we designed and synthesized a new amino-decorated bridging ligand H2APDA and employed it to react with the environmentally friendly Mg­(II) ions to construct a novel magnesium luminescent metal–organic framework (Mg-LMOF), namely [Mg2(APDA)2(H2O)3]·5DMA·5H2O (Mg-APDA). The as-synthesized Mg-LMOF is a three-dimensional framework with one-dimensional hexagonal channels. These microporous channels are decorated with Lewis-base amino sites and uncoordinated O atoms, which facilitate the Mg-APDA to anchor and recognize various analytes. Mg-APDA can be used as a multiresponsive luminescent sensor to detect Fe­(III) ions, pesticides, and antibiotics effectively. To the best of our knowledge, this work represents the first amino-decorated Mg-LMOF as an efficient fluorescent sensor for detecting metal ions, pesticides, and antibiotics simultaneously.