Lanthanide coordination compounds with organic ligands as prospective electroluminescent materials

Summary form only. One of the ways to improve of OEL materials is applying metal coordination compounds with organic ligands. Metal coordination compounds combine the features of both inorganic and organic compounds and offer a variety of molecular structures by changing the metals, ligands, coordination numbers and so on. This diversity of molecular structure gives one an opportunity to tone the electronic properties of the molecules, and hence to tune the optical properties. The basic aim of this work is design, synthesis and characterization of a novel and known Eu(lII) and Tb(lII) complexes which not only display a good electron transportability but also give a high luminescent efficiency. On the basis of analysis of literature data, some criteria of efficiency of EL compounds were formulated, and terbium complexes with substituted aromatic carboxylic acids and trivalent europium complex with five-membered heterocyclic and six-membered aromatic ring containing P-diketons were chosen for our study.