European Polymer Journal 58 (2014) 191–200

Penghui Chen ^a, Jingsong Shi ^a, Yalan Zhang ^b, Kemin Wang^a,⇑, Jun Nie ^c,⇑

In this study, the b-diketones groups functionalized polymer D-HEA-C was first synthesized by chemically attaching D-HEA to the side chains of polycaprolactone and then coordinated with Eu(III) to form b-diketones macromolecular complexes. 1H NMR, FT-IR, GPC, ICP-AES, ultraviolet absorption and florescence emission were used to characterize the polymeric rare earth complex materials composed of D-HEA-C and Eu3+ ion. The synthesized b-diketones macromolecular complexes were doped into EVA film to test the energy conversion efficiency. TGA, Tran**ittance, UV absorption spectra, florescence emission and SEM were used to study the properties of the doped EVA film. The macromolecular complexes could not only limit the coordination of **all molecules to effectively avoid the fluorescence quenching, but also enhance the fluorescence intensity of the complex. Moreover, the b-diketones macromolecular complexes have good compatibility with the EVA matrix, and could increase the photovoltaic conversion efficiency and service life of EVA film. Therefore, the b-diketones macromolecular complexes could act as efficient light conversion molecular devices, and have a broad prospect in the solar packaging film.