Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 200, Issue -, Pages 307-312Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2018.04.040
Keywords
Calix[4]arene; Thiourea; Coumarin; Fluorescent probe; Fluoride ion
Categories
Funding
- National Natural Science Foundation of China [21572026, 21702020]
- Natural Science Foundation of Jiangsu Colleges and Universities [14KJA150002]
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology [BM2012110]
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center [ACGM2016-06-05]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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A novel calix[4]arene based chemosensor L which contains coumarin and thiourea group has been synthesized and characterized. Interestingly, probe L exhibits both fluorescent and colorimetric response to fluoride anion with high selectivity and sensitivity. The addition of F- to a solution of probe L resulted in obvious naked-eye color change from colorless to orange under daylight and prominent fluorescence quenching. Further studies showed that the recognition process was less affected by other anions. The binding property of L with F- was studied by a combination of combination of various spectroscopic techniques, such as absorption spectra, fluorescence titration, Job's plot and H-1 NMR titration. We are anticipating that this architecture with functional group attached to upper rim of calix[4]arene platform may provide a new approach for the development of F- chemosensor. (C) 2018 Elsevier B.V. All rights reserved.
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