An anthracene-based multifunctional fluorescent chemosensor for fluoride ion detection and latent fingerprint...

The simple condensation technique was performed to generate 2-(anthracen-9-ylmethylene)-N-(naphthalen-1-yl) hydrazine-1-carbothioamide (NTScA), an anthracene-derived chemosensor. The developed probe is ability to recognize fluoride ion was then thoroughly studied employing different methods. Spectroscopic experiments in an organo-aqueous condition (DMSO/H₂O, 5:95 v/v) indicated that NTScA recognizes fluoride ion more precisely in comparison to interfering anions and cations, producing an evident change in color from yellow to orange the unaided eye. The sensing of fluoride ion detection NTScA was carefully checked using UV-Visible absorption, fluorescence emission, lifetime study, and ¹H-NMR titration. Benesi-Hildebrand analysis and Job^'s plot were predicted the binding constant and stoichiometric ratio. Theoretical calculation of Differential Functional Theory (DFT) and time dependent (DFT) were used for optimizing the geometry, transition state, excite state proton transfer process and binding the mechanism. Other than, real-time sensing study and latent fingerprint studies on different surfaces examined the practical application of NTScA. The both experimental and theoretical results performed NTScA as an effective and multifunctional platform for fluoride ion detection.