Citation: Ruikui YAN, Xiaoli CHEN, Miao CAI, Jing REN, Huali CUI, Hua YANG, Jijiang WANG. Design, synthesis, and fluorescence sensing performance of highly sensitive and multi-response lanthanide metal-organic frameworks[J]. Chinese Journal of Inorganic Chemistry, ;2024, 40(4): 834-848. doi: 10.11862/CJIC.20230301 shu

Design, synthesis, and fluorescence sensing performance of highly sensitive and multi-response lanthanide metal-organic frameworks

School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Laboratory of New Energy & New Function Materials, Yan′an University, Yan′an, Shaanxi 716000, China

Corresponding author: Xiaoli CHEN, chenxiaoli003@163.com
Received Date: 7 August 2023
Revised Date: 13 December 2023

Figures(9)

Based on the 5-(3, 4-dicarboxyphenoxy) isophthalic acid (H₄dppa) ligand, two lanthanide metal-organic frameworks (Ln-MOFs) were designed and synthesized by hydrothermal synthesis: {(dima)[Dy(dppa)(H₂O)₂]·2.5H₂O}_n (Dy - MOF) and {(dima) [Eu(dppa) (H₂O)₂]·1.5H₂O}_n (Eu - MOF) (dima=dimethylamine cation). The structures were characterized by elemental analysis, infrared spectroscopy, single-crystal X-ray diffraction, etc. Dy-MOF and Eu- MOF are hetero-isomorphic 2D network structures, and adjacent 2D networks further form 3D supramolecular network structures through hydrogen bonding. Fluorescence analysis shows that Dy-MOF and Eu-MOF have excellent fluorescence properties at room temperature, and Dy-MOF has excellent fluorescence sensing properties, which can efficiently and high-sensitively detect a variety of pollutants in water: aniline (ANI), nitrobenzene (NB), tetracycline (TC), pyrimethanil (PTH), and tryptophan (Trp). The fluorescence quenching mechanism of Dy-MOF in detecting pollutants was also investigated.
- lanthanide metal-organic frameworks,
- 5-(3, 4-dicarboxyphenoxy) isophthalic acid,
- crystal structure,
- fluorescence sensing
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