A novel Sm-metal-organic framework (MOF) sensor with the molecular formula Sm(HDBA)·HO has been prepared based on a penta-carboxyl organic ligand (HDBA = 3,5-di(2',4'-dicarboxylphenyl)benzoic acid) and samarium nitrate under solvothermal conditions. Sm-MOF is characterized by single-crystal X-ray diffraction analysis, elemental analysis, thermogravimetric analysis, and powder X-ray diffraction analysis. Structural analysis shows that the dimer metal units are alternately connected to form a one-dimensional chain, and this chain is connected by the bridging carboxyl oxygen of the ligand HDBA to form a two-dimensional double-layer plane, which then expands into a three-dimensional microporous framework. Fluorescence detection studies show that Sm-MOF can detect Ag ions, MnO anions, and cimetidine tablets with high sensitivity and selectivity and can also be used to electrochemically detect -nitrophenol in water. High-sensitivity detection capability of the Sm-MOF can enrich the application of samarium complexes in multifunctional sensors.
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| http://dx.doi.org/10.1021/acsomega.0c05867 | DOI Listing |
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