LUMINESCENCE OF POLYMER ELECTROLYTES CONTAINING EUROPIUM(III)

The excitation and emission spectra of polymeric matrices - poly(ethylene oxide), PEO, and poly(propylene oxide), PPO - containing different concentrations of EuBr3 were recorded and most of the observed transitions identified. The Stark components of the F-7(0-4), 5D0 levels and the corresponding barycenters were calculated based on the emission lines assignment to the 5D0.1 --> F-7(0-4) transitions. The spectra were discussed in terms of a C2v local Eu3+ coordination. The relative intensity of the 5D0 --> F-7(2) hypersensitive transition was related to the electrolyte morphological changes due to increasing europium concentration.