Novel Eu(III) complex with 2-methyl-5-phenylpentene-1-dione-3,5, metallopolymer based on and copolymer with N-vinylcarbazole were obtained. The kinetics of polymerization was studed by dilatometric method. The complex and metallopolymer were investigated and characterized by a number of physicochemical methods. The obtained results allowed to determine the composition, structure and symmetry of synthesized compounds. On the basis of metallopolymers was constructed the electroluminescent diode.