title: Aminobenzohydrazide based colorimetric and 'turn-on' fluorescence chemosensor for selective recognition of fluoride.
abstract: Chemosensors based on aminobenzohydrazide Schiff bases bearing pyrene/anthracene as fluorophores have been designed and synthesized for F(-) ion recognition. The addition of fluoride ions to the receptors causes a dramatically observable colour change from pale yellow to brown/red. (1)H NMR studies confirm that the F(-) ion facilitates its recognition by forming hydrogen bond with hydrogens of amide and amine groups. Moreover these sensors have also been successfully applied to detection of fluoride ion in commercial tooth paste solution.
authors.affiliation: School of Chemistry, Madurai Kamaraj University, Madurai 625021, India.
authors.forename: Thangaraj
authors.initials: T
authors.lastname: Anand
authors.affiliation: School of Chemistry, Madurai Kamaraj University, Madurai 625021, India; Institute for Stem Cell Biology and Regenerative Medicine (inStem), NCBS, Bangalore 560065, India.
authors.forename: Gandhi
authors.initials: G
authors.lastname: Sivaraman
authors.affiliation: School of Chemistry, Madurai Kamaraj University, Madurai 625021, India.
authors.forename: Murugan
authors.initials: M
authors.lastname: Iniya
authors.affiliation: School of Chemistry, Madurai Kamaraj University, Madurai 625021, India.
authors.forename: Ayyanar
authors.initials: A
authors.lastname: Siva
authors.affiliation: School of Chemistry, Madurai Kamaraj University, Madurai 625021, India. Electronic address: dcmku123@gmail.com.
authors.forename: Duraisamy
authors.initials: D
authors.lastname: Chellappa
mesh_terms: D000586:Amination; D001555:Benzene Derivatives / Q000737:chemistry; D003124:Colorimetry; D003358:Cosmetics / Q000032:analysis; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D005459:Fluorides / Q000032:analysis*; D006834:Hydrazines / Q000737:chemistry*; D012545:Schiff Bases / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D001555:Benzene Derivatives; D003358:Cosmetics; D005456:Fluorescent Dyes; D006834:Hydrazines; D012545:Schiff Bases; D005459:Fluorides
keywords: Aminobenzohydrazide; Colorimetric; Fluoride; Real sample analysis; Time-dependent density functional theory; Turn-on