title: Visible colorimetric fluoride ion sensors.
abstract: [structure: see text] Five new urea derivative naphthalene compounds were synthesized by a reaction of 1,8-diaminonaphthalene and the corresponding isocyanates and showed a distinct color change only when treated with fluoride ions.
authors.affiliation: Department of Chemistry and Institute of Basic Science, Chonnam National University, 300 Yongbong-Dong, Bukgu, Gwangju 500-757, Korea.
authors.forename: Eun Jin
authors.initials: EJ
authors.lastname: Cho
authors.forename: Byung Ju
authors.initials: BJ
authors.lastname: Ryu
authors.forename: Young Ju
authors.initials: YJ
authors.lastname: Lee
authors.forename: Kye Chun
authors.initials: KC
authors.lastname: Nam
mesh_terms: D015081:2-Naphthylamine / Q000031:analogs & derivatives / Q000737:chemistry; D003124:Colorimetry / Q000379:methods*; D005459:Fluorides / Q000737:chemistry*; D017953:Isocyanates / Q000737:chemistry; D015394:Molecular Structure; D014508:Urea / Q000031:analogs & derivatives / Q000138:chemical synthesis / Q000737:chemistry
chemical_list: D017953:Isocyanates; D014508:Urea; D015081:2-Naphthylamine; C508862:1,8-diaminonaphthalene; D005459:Fluorides