Abstract: The influence of three types of blending polymer including polyvinylpyrrolidone(PVP), polyvinyl alcohol(PVA) and polymethyl methacrylate(PMMA) on the luminescence property of ^Eu/thenoyl trifluoroacetone/^N-methyl -2-pyrrolidone [Eu(TTA)₃·2NMP] was studied. From the results, we found that the fluoresence intensity of ternary complex compounded with polymer was stronger than that of ternary complex, no matter that the ternary complex was either liquid or film. This paper offered the important experment foundation for membrane-forming and processing of luminescent rare earths. These systems were characterized by elementary analysis, FT-IR and fluorescent spectrometry. {Eu(TTA)}₃·2NMP keeps the coordination structure of β-diketones to Eu³⁺ , but some supramolecular interactions exist between the complex and polymers, leading to the slight change of the luminescent characteristics of the composites compared to complex.

Key words: Eu³⁺, α-Thenoyl trifluoroacetone(TTA), PVP, PVA, PMMA, Luminesence property