Analytical Sciences

Abstract − Analytical Sciences, 19(10), 1353 (2003).

8-Hydroxyquinoline Derivative as a Fluorescent Chemosensor for Zinc Ion
Jun KAWAKAMI,  Masaki OHTA, Yasuhiro YAMAUCHI, and Kunio OHZEKI
Department of Materials Science and Technology, Faculty of Science and Technology,Hirosaki University, Bunkyo-cho 3, Hirosaki, Aomori 036-8561, Japan
8-Hydroxyquinoline derivative 1 as a fluorescent chemosensor for Zn2+ was synthesized. Because Cd2+ is often found with Zn2+ in the environment and can form fluorescent complexes with chelating fluorophores, a potentially important property of chemosensors for Zn2+ is their selectivity for Zn2+ over Cd2+. The Zn2+ or Cd2+ complexes of 1 gave an emission band from the 1:1 complex, but the fluorescence intensity for Cd2+ was a half of that for Zn2+. Ligand 1 is suited for use as a fluorescent chemosensor for Zn2+.