title: Efficient and simple colorimetric fluoride ion sensor based on receptors having urea and thiourea binding sites.
abstract: [structure: see text] Novel colorimetric receptors for selective fluoride ion sensing containing anthraquinone as chromogenic signaling subunit and urea (N,N' '-(9,10-dihydro-9,10-dioxo-1,2-anthracenediyl)bis[N'-phenyl])/thiourea (N,N' '-(9,10-dihydro-9,10-dihydro-9,10-dioxo-1,2-antrhacenediyl)bis[N-phenyl]) binding sites have been reported. These receptors have shown no affinity for other halide ions (Cl-, Br-, and I- ions). Well-defined color change in the visible region of the spectrum was observed upon addition of fluoride ion in DMSO/CH3CN solution of the receptors 1 and 2.
authors.affiliation: Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India.
authors.forename: D Amilan
authors.initials: DA
authors.lastname: Jose
authors.forename: D Krishna
authors.initials: DK
authors.lastname: Kumar
authors.forename: Bishwajit
authors.initials: B
authors.lastname: Ganguly
authors.forename: Amitava
authors.initials: A
authors.lastname: Das
mesh_terms: D000880:Anthraquinones / Q000737:chemistry; D001665:Binding Sites; D002151:Calorimetry / Q000379:methods*; D005459:Fluorides / Q000032:analysis*; D008968:Molecular Conformation; D015394:Molecular Structure; D013890:Thiourea / Q000138:chemical synthesis / Q000737:chemistry*; D014508:Urea / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000880:Anthraquinones; D014508:Urea; D013890:Thiourea; D005459:Fluorides