title: Amido-Schiff base derivatives as colorimetric fluoride sensor: Effect of nitro substitution on the sensitivity and color change.
abstract: A series of Schiff bases synthesized by the condensation of benzohydrazide and -NO2 substituted benzaldehyde have been used as selective fluoride ion sensor. Test paper coated with these synthetic Schiff bases (test kits) can detect fluoride ion selectively with a drastic color change and detection can be achieved by just using the naked-eye without the help of any optical instrument. Interestingly, the position of -NO2 group in the amido Schiff bases has an effect on the sensitivity as well as on the change of color of species.
authors.affiliation: Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India.
authors.forename: Soumen
authors.initials: S
authors.lastname: Ghosh
authors.affiliation: Department of Chemistry, Aliah University, DN-18, Sector-V, Saltlake, Kolkata 700091, India. Electronic address: alam_iitg@yahoo.com.
authors.forename: Md Akhtarul
authors.initials: MA
authors.lastname: Alam
authors.affiliation: Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India.
authors.forename: Aniruddha
authors.initials: A
authors.lastname: Ganguly
authors.affiliation: Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India. Electronic address: nguchhait@yahoo.com.
authors.forename: Nikhil
authors.initials: N
authors.lastname: Guchhait
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D000577:Amides / Q000737:chemistry*; D000838:Anions; D003116:Color; D003124:Colorimetry / Q000379:methods*; D005459:Fluorides / Q000032:analysis*; D007700:Kinetics; D009574:Nitro Compounds / Q000737:chemistry*; D066244:Proton Magnetic Resonance Spectroscopy; D012545:Schiff Bases / Q000737:chemistry*; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000097:Acetonitriles; D000577:Amides; D000838:Anions; D009574:Nitro Compounds; D012545:Schiff Bases; D012997:Solvents; D005459:Fluorides; C032159:acetonitrile
keywords: Amido-Schiff base; Colorimetric sensing; Fluoride detection; Nitro-substitution; Test kits