Dual Naked-Eye Optical Sensor Based on Imidazolium Cation and Napthalamide for Specific Detection of Fluoride
A novel naked eye fluorescence sensor ( ANI ) based on naphthalimide and imidazolium moieties for fluoride detection has been designed and synthesized by multiple step synthesis. The fluorescence response of ANI sensor was significantly quenched in the presence of fluoride ion upon the interaction b...
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Veröffentlicht in: | Journal of fluorescence 2020-03, Vol.30 (2), p.259-267 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A novel naked eye fluorescence sensor
(
ANI
)
based on naphthalimide and imidazolium moieties for fluoride detection has been designed and synthesized by multiple step synthesis. The fluorescence response of
ANI
sensor was significantly quenched in the presence of fluoride ion upon the interaction between an acidic amide proton and acidic C2 proton (-C(2)
H
-) of imidazolium compound. The binding behavior of
ANI
and F
−
ion was extensively explored by using NMR titration. Comparison of binding ability of
ANI
and
AN
sensors addressed the dominant electrostatic and hydrogen bonding interaction with F
−
ion. Consequently,
ANI
sensor highlights a strong binding with F
−
ions with a high selectivity over
AN
. Interestingly,
ANI
demonstrated a naked-eye response with colorimetric and fluorometric assay. |
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ISSN: | 1053-0509 1573-4994 |
DOI: | 10.1007/s10895-020-02494-2 |