title: A Schiff-based sensor with turn-on fluorescence  for selective detection of Hg2+.
abstract: A simple Schiff-base colorimetric receptor 1 was prepared. It exhibits an ‘off–on-type’ mode with high sensitivity in the presence of Hg2+. The change in color is very easily observed by the naked eye in the presence of Hg2+, whereas other metal cations do not induce such a change. A Job plot indicated a 1 : 1 complexation stoichiometry between receptor 1 and Hg2+. The association constant for 1–Hg2+ in Tetrahydrofuran (THF) was determined to be 1.3 × 10(9)M-1 using a Hill plot.
authors.forename: Chin-Feng
authors.initials: CF
authors.lastname: Wan
authors.forename: Hsiang-Yi
authors.initials: HY
authors.lastname: Lin
authors.forename: Cho
authors.initials: C
authors.lastname: Chien
authors.forename: An-Tai
authors.initials: AT
authors.lastname: Wu
mesh_terms: D003124:Colorimetry; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008628:Mercury / Q000032:analysis*; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
chemical_list: C495462:2-hydroxynaphthalene-1-carboxaldehyde; D005456:Fluorescent Dyes; D009281:Naphthalenes; D011725:Pyridines; D012545:Schiff Bases; D008628:Mercury; C505797:2,6-diaminopyridine