EU(II)/ORGANOPHOSPHOROUS COMPLEXES, A METHOD FOR PREPARATION OF EU(II)/ORGANOPHOSPHOROUS COMPLEXES AND APPLICATION TO BLUE EMITTING DEVICES

摘要

PURPOSE: A bivalent europium complex and a blue emitting device using the same are provided to ensure high solubility in organic solvent and to easily form a thin film. CONSTITUTION: A bivalent europium transition metal complex is denoted by chemical formula 1 or 2. A method for preparing the complex comprises: a step of preparing europium halide salt with 2 oxidation number; and a step of directly refluxing the europium halide salt and organophosphate in oxygen-free organic solvent to prepare Eu(II)/organophosphorous complexes; a step of purifying the complexes.