Fluorescence Studies on the Complexes of Europium Terbium o Amino Benzoate

The o amino benzoate complexes with the different molar ratio of Eu(Ⅲ) to Tb(Ⅲ) have been synthesized.The experimental results of the emission spectra excited by 369 nm UV light showed that the fluorescence intensities of one rare earth ion were influenced by the other.In the complexes,the fluorescence intensities of europium ions were sensitized by terbium ions and those of terbium ions were quenched by europium ions.