A novel fluoride selective optical chemosensor based on internal charge transfer signaling |
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| Authors: | Sabir H. Mashraqui Rupesh Betkar David Quinonero |
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| Affiliation: | a Department of Chemistry, University of Mumbai, Vidyanagari, Santacruz-E, Mumbai 400098, India
b Department de Quimica, Universitat de les Illes Balears, Palma de Mallorca 07122, Baleares, Spain |
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| Abstract: | A new internal charge transfer probe, NAPH-1, synthesized by incorporating photoemitive naphthalimide core with an acidic imidazolium ring, offers highly selective colorimetric and ratiometric ‘off-on’ signaling for targeting F−, while Cl−, Br−, I−,  , SCN−, AcO−, and  do not appreciably perturb the photophysical properties of the probe even at relatively higher concentrations than the F−. Deprotonation of the imidazolium ring, supported by the 1H NMR and theoritical studies, seems to cause the spectral modulations. |
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