期刊
INORGANIC CHEMISTRY
卷 59, 期 5, 页码 2803-2810出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.9b03152
关键词
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资金
- National Natural Science Foundation of China [21761012, 21861018]
- Natural Science Foundation of Jiangxi Province of China [20192BAB203001, 20192ACBL20013, 20182BCB22010]
- Program for Qjngjiang Excellent Young Talents, JXUST
A novel Co-based metal-organic framework (MOF) with the formula of {[Co-3(BIBT)(3)(BTC)(2)(H2O)(2)]center dot solvents}(n) (JXUST-2, where JXUST denotes Jiangxi University of Science and Technology, BIBT = 4,7-bi(1H-imidazol-1-yl)benzo[2,1,3]thiadiazole, and H3BTC = 1,3,5-benzenetricarboxylic acid) has been solvothermally prepared, which takes 3D structure with a rare 3,4,6-c topology and contains intramolecular hydrogen bonds. Interestingly, the sensing investigations suggest that JXUST-2 could be considered as a multifunctional fluorescence sensor toward Fe3+, Cr3+, and Al3+ via a turn-on effect with good reusability and detection limits of 0.13, 0.10, and 0.10 mu M, respectively. The turn-on effect of JXUST-2 could be ascribed to an absorbance caused enhancement (ACE) mechanism. Notably, JXUST-2 is the first turn-on MOF fluorescent sensor for Fe3+, Cr3+, and Al3+ simultaneously.
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