Design and Synthesis of a Selective Chemosensor for Zn2+

✍ Scribed by Nan Xie; Yi Chen

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 78 KB
• Volume: 24
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.200690337

✦ Synopsis

Abstract

A hydroxyl substituted phenolic Schiff base 1, used as sensor for detection of Zn^2+^, was synthesized and investigated. It was found that a strong fluorescence emission was observed when 1 bound to Zn^2+^ in acetonitrile, whereas no fluorescence emission was detected when 1 bound to other metal ions (Fe^2+^, Co^2+^, Ni^2+^, Cu^2+^, Cd^2+^, Hg^2+^, Mg^2+^, Pb^2+^, Ca^2+^, Ba^2+^, Sr^2+^) except for Mg^2+^, for which a weak fluorescence emission was detected in the same condition. Competition experiment showed that no obvious interference was observed in its fluorescence while 1 performed the titration with Zn^2+^ in the different mixtures of metal ions. To understand the site where Zn^2+^coordinated to the ligand and the mechanism of binding, three other hydroxyl substituted phenolic Schiff bases 2–4 were synthesized and their binding reactions with Zn^2+^were also investigated.