Chemistry Letters, Vol.30, No.7, 692-693, 2001
Ruthenium(II) complex having crown-ether moiety at 3,3'-positions on 2,2'-bipyridine ligand: Spectroscopic responses upon ion recognition
Ru(bpy)(2)(CE-bpy)(2+) was prepared where bpy and CE-bpy were 2,2 ' -bipyridine and bpy having a crown-ether moiety at the 3,3 ' positions, respectively. Although the Ru(II) complex showed only very weak emission in acetonitrile, recognition of Na+ or Li+ by the crown-ether moiety in CE-bpy resulted in an increase in the emission intensity of the complex.