Synthesis and electrochemical characterization of the new luminescent metal-chelate complexes

Organic electroluminescent devices (OELD) with multilayer structures have been studied actively for the application to a flat-panel display. Metal-chelate complexes have been intensively investigated as an emitting layer and recognized to have excellent electroluminescence (EL) properties. In this study, we synthesized several metal-chelate complexes which display blue emission. The complexes prepared herein are beryllium and zinc complexes coordinated by quinaldate or 8-quinolinecarboxylate. These complexes were characterized by FT-IR, MS/FAB, 1H-NMR, UV-vis and photoluminescence (PL). More importantly, the electrochemical gap (Eg), electron affinity(EA) and ionization potential (IP) of these complex films were investigated. Data from cyclic voltammetry(CV) were compared with the bandgap obtained from UV-vis and discussed. Further studies on the EL of these new materials are now in progress