期刊
RSC ADVANCES
卷 11, 期 52, 页码 32622-32629出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra06590d
关键词
-
资金
- National Natural Science Foundation of China [21771096]
A new luminescent Zn-MOF material was successfully synthesized for the detection of Al3+ and antibiotics pollutants in water, demonstrating excellent water stability and luminescent performance. This material can serve as a dual-responsive chemical sensor for turn-on and turn-off luminescent detection of Al3+ and SNT in aqueous media, showing great potential for practical applications in monitoring metal ions and antibiotics pollutants in environmental water matrices.
The effective detection of Al3+ and antibiotics pollutants is crucial for environmental protection and human health due to their high toxicity and nondegradability, but it is still currently challenging. In this work, a methyl-decorated acylamide-containing dicarboxylate ligand H2L was elaborately designed and successfully synthesized, which was further employed to react with Zn(ii) ions and dpe ligands to construct a new luminescent Zn-MOF, namely {[Zn(L)(dpe)]center dot DMF center dot 3H(2)O}(n) (1). X-ray crystallography reveals that MOF 1 is a 3D 8-fold [4 + 4] interpenetrated diamondoid framework with isolated DMF and water molecules in the pores, in which the uncoordinated acylamide groups are found and facilitate the Zn-MOF to recognize analyte molecules. The activated solvent-free MOF sample (denoted as 1a) exhibits excellent water stability and good luminescent performance. The luminescence sensing experiments show that 1a could behave as a bi-responsive chemical sensor for turn-on and turn-off luminescent detection of Al3+ and SNT in aqueous media, respectively. The sensing mechanisms have also been discussed. Furthermore, MOF 1a was successfully applied to the effective determination of Al3+ and SNT in real water samples. This represents, to our knowledge, the first example of a MOF material for turn-on and turn-off luminescent detection of Al3+ and SNT in water, which will promote the practical application of water-stable luminescent MOF sensors in monitoring metal ions and antibiotics pollutants in the environmental water matrices.
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