1. Three new alkaline earth-based metal-organic frameworks based on two tricarboxylic acid ligands: Structural diversity, stability study and luminescent properties.
- Author
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He, Yuan-Chun, Wang, Jing, Geng, Chang-Sheng, Yu, Hao-Long, Ren, Xiao-Fei, Sun, Ye-Kai, Zhao, Zi-Hao, Lu, Tian, and Zhao, Fang-Hua
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METAL-organic frameworks , *TRICARBOXYLIC acids , *ALKALINE earth metals , *COORDINATION polymers , *LIGANDS (Chemistry) , *X-ray powder diffraction , *ALKALINE earth ions - Abstract
• 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(HL 1)] n (1), [Ca(HL 1)(H 2 O) 2 ] n (2), and [Ba(HL 2)] n (3) (H 3 L 1 = 1-(3-carboxyphenylmethyl)-1H-pyrazol-3,5-dicarboxylic acid and H 3 L 2 = 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] [ABSTRACT FROM AUTHOR]
- Published
- 2024
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