Three new alkaline earth-based metal-organic frameworks based on two tricarboxylic acid ligands: Structural diversity, stability study and luminescent properties

•Three alkaline earth-based MOFs were synthesized under hydrothermal conditions.•Compounds 1-3 reveal structural diversity owing to different metal ions and organic ligands.•The luminescent properties of compounds 1-3 were studied in detail. The alkaline earth-based metal-organic frameworks (MOFs) h...

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Bibliographic Details
Published in:Journal of molecular structure 2024-04, Vol.1301, p.137363, Article 137363
Main Authors: He, Yuan-Chun, Wang, Jing, Geng, Chang-Sheng, Yu, Hao-Long, Ren, Xiao-Fei, Sun, Ye-Kai, Zhao, Zi-Hao, Lu, Tian, Zhao, Fang-Hua
Format: Article
Language:English
Subjects:
Alkaline earth metal ion
Luminescence
MOF
Stability
Structure
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Summary:•Three alkaline earth-based MOFs were synthesized under hydrothermal conditions.•Compounds 1-3 reveal structural diversity owing to different metal ions and organic ligands.•The luminescent properties of compounds 1-3 were studied in detail. The alkaline earth-based metal-organic frameworks (MOFs) have attracted more and more attention for their beautiful structure and environmental friendliness. In this work, three alkaline earth-based MOFs, namely [Ba(HL1)]n (1), [Ca(HL1)(H2O)2]n (2), and [Ba(HL2)]n (3) (H3L1 = 1-(3-carboxyphenylmethyl)-1H-pyrazol-3,5-dicarboxylic acid and H3L2 = 1-(4-carboxyphenylmethyl)-1H-pyrazol-3,5-dicarboxylic acid), were synthesized under hydrothermal conditions. Compounds 1-3 reveal structural diversity owing to different metal ions and organic ligands. Thermal and solvent stability were characterized by thermogravimetric analyses (TG) and powder X-ray diffraction (PXRD), respectively. The solid-state luminescent properties were also investigated. The result shows a clear correlation between emission bands and excitation wavelengths of compounds 1-3. Three new alkaline earth-based metal-organic frameworks with luminescent properties were synthesized and characterized. [Display omitted]
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2023.137363