title: Novel heterocyclic thiosemicarbazones derivatives as colorimetric and "turn on" fluorescent sensors for fluoride anion sensing employing hydrogen bonding.
abstract: Two novel heterocyclic thiosemicarbazone derivatives have been synthesized, and characterized, by means of spectroscopic and single crystal X-ray diffraction methods. Their chromophoric-fluorogenic response towards anions in competing solvent dimethyl sulfoxide (DMSO) was studied. The receptor shows selective recognition towards fluoride anion. The binding affinity of the receptors with fluoride anion was calculated using UV-visible and fluorescence spectroscopic techniques.
authors.affiliation: Department of Chemistry, Centre of Excellence in Corrosion and Surface Engineering, National Institute of Technology - Tiruchirappalli, Tiruchirappalli 620 015, Tamil Nadu, India.
authors.forename: S L
authors.initials: SL
authors.lastname: Ashok Kumar
authors.forename: M
authors.initials: M
authors.lastname: Saravana Kumar
authors.forename: P B
authors.initials: PB
authors.lastname: Sreeja
authors.forename: A
authors.initials: A
authors.lastname: Sreekanth
mesh_terms: D000042:Absorption; D000838:Anions; D003116:Color; D003124:Colorimetry / Q000379:methods*; D018360:Crystallography, X-Ray; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D005459:Fluorides / Q000032:analysis*; D006571:Heterocyclic Compounds / Q000737:chemistry*; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013882:Thiosemicarbazones / Q000737:chemistry*
chemical_list: D000838:Anions; D005456:Fluorescent Dyes; D006571:Heterocyclic Compounds; D013882:Thiosemicarbazones; D005459:Fluorides; D004121:Dimethyl Sulfoxide
keywords: Chromophoric and fluorogenic sensor; Deprotonation; Heterocyclic; Single crystal XRD; Thiosemicarbazone; UV–visible spectroscopy