期刊
INORGANIC CHEMISTRY FRONTIERS
卷 4, 期 2, 页码 256-260出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6qi00362a
关键词
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资金
- NSFC [21371102, 21531005, 21673120]
- 973 Program of China [2014CB845600]
- NSF of Tianjin [16JCZDJC36900]
Aluminum ions are harmful to human health and can damage the central nervous system leading to brain cell injury in excessive amounts. Hence, sensing and detection of Al3+ ions are important and require a method with high sensitivity and high selectivity. Here, a metal-organic framework {[Zn-2(O-BTC)(4,4'-BPY)(0.5)(H2O)(3)]center dot(H2O)(1.5)center dot(DMA)(0.5)}(n) (NUM-2) was constructed by ligands 2-hydroxy-benzene-1,3,5-tricarboxylic acid (HO-H3BTC) and 4,4'-bipyridine (4,4'-BPY) based upon chain-shaped secondary building units (SBUs). NUM-2 itself exhibits extremely weak fluorescence emission, however, the luminescence intensity of NUM-2 is enhanced obviously when there are Al3+ ions in ethanol solutions, and the detection limit calculated using 3 sigma/k could reach 0.10 ppm, indicating that NUM-2 could be used as an efficient turn-on-based fluorescent sensor with high sensitivity and high selectivity for Al3+ ions.
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