A new ligand containing a pyridine, a 2,2′-bipyridine and a carboxylate moiety and its lanthanide polymeric complexes: Synthesis, characterization and photophysical studies

The synthesis, characterization and photophysical properties of soluble polymeric complexes obtained from a new ligand 1 and its Eu(III), Tb(III) and Gd(III) ions, is described. The 1H NMR, FTIR, absorption and excitation spectra reveal chelation of the metal with the ligand via a carboxylate and excludes the pyridinics moieties coordination.