LIGHT-SCATTERING AND LUMINESCENCE STUDIES OF M(CF3SO3)(X) POLYETHER COMPLEXES CONTAINING TRIVALENT CATIONS

Raman scattering has been used to study ionic interactions in trivalen t M(CF3SO3)(3)-PEO complexes, M=Eu3+, Nd3+ and Ce3+. Both solvated ion s and cation-anion pairs/multiplets were found, and, in the case of Nd 3+ and Ce3+ complexes, the spectra suggest more complicated configurat ions of combined cation-anion-polyether coordinations. The findings ar e discussed in terms of the cationic charge density. Intense luminesce nce was observed in the Eu3+ complexes which converted blue laser ligh t into red radiation. The well defined luminescence spectra support th e concept of several cationic sites in these complexes.