Journal of Hebei University (Natural Science Edition) ›› 2020, Vol. 40 ›› Issue (4): 372-378.DOI: 10.3969/j.issn.1000-1565.2020.04.006

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Synthesis of naphthyl-perimidium based receptor and selective recognition of fluoride

DONG Zhiyun, JIA Jia, WANG Shimei, XI Fugui   

  1. Department of Chemistry, Xinzhou Teachers University, Xinzhou 034000, China
  • Received:2019-10-20 Online:2020-07-25 Published:2020-07-25

Abstract: A novel naphthyl-perimidium based receptor 1 was synthesized. The interaction between receptor 1 and nine common anions(F-, Cl-, Br-, I-, CH3COO-, HSO-4, H2PO4-, ClO4-, NO-3)were studied by UV-Vis and FL spectroscopies. The results indicated that receptor 1 should selective recognition of F-. In UV-Vis spectra, When F- was added, the color of receptor 1 solution changed from yellow to colorless, the results indicated that 1 could behave as a colorimetric chemosensor for F-. Job plot demonstrated that receptor 1 formed 1∶1 complex with F-, and the binding constant is(3.05±0.15)×103 L/mol. In fluorescent spectra, the non-fluorescent solution of 1 exhibited strong blue fluorescence when F- was added, and a strong emission peak at 403 nm was found with the turn-on effect. The detection linear range for F- was 1.0×10-6—3.0×10-5 mol/L, and the detection limit was 8.5×10-6 mol/L. The 1H NMR investigation confirmed that the hydrogen bond was formed between F- and the C(2)-H of receptor 1, the excessive of F- will cause deprotonation of receptor 1.

Key words: perimidium, fluoride, colorimetric recognition, fluorescent probe

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