Journal
MICROCHEMICAL JOURNAL
Volume 155, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.microc.2020.104768
Keywords
Spectroscopic probe; Luminescence sensing; Covalently functionalized metal-organic frameworks; Detection of nitrite
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Funding
- National Natural Science Foundation of China [21571142, 21971194]
- Developing Science Funds of Tongji University
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A functionalized MOF-based hybrid material (UiO-66-NH2-Cit) is synthesized based on the covalent attachment of UiO-66-NH2 with citric acid (Cit) through a condensation reaction between them. The transformation of the amino groups is validated by FTIR and PXRD, etc. UiO-66-NH2-Cit is further developed as a luminescent probe to detect NO2- (one kind of food preservative). The results show that it has selectivity and sensitivity in photo response to nitrite comparing with other preservatives. The sensing mechanism is also discussed.
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