Syntheses and Complexing Behavior of New Fluorescent Reagents for Alkaline Earth Metal Ions

Abstract A new fluorescent reagent (1) which has two anthracene moieties at both terminals of linear polyether was synthesized, and the complexation behavior of 1 with alkaline earth metal ions was investigated. At the complexation with the metal ions, the fluorescence spectrum of 1 changed from that of monomer to dimer of anthracene. 1 formed both 1 : 1 and 1 : 2 complexes with alkaline earth metal ions, and the complex formation was selective to Ca2+.