Method for preparing rare earth europium ternary complex

Abstract

The invention relates to a method for preparing a rare earth europium ternary complex, which comprises the following steps of: using europium chloride hexahydrate, benzoyl acetone and triphenylphosphine oxide as raw materials, using absolute ethyl alcohol as a solvent and a detergent, using deionized water as a solvent and a cleaning agent, and using sodium hydrate as an acidity-basicity pH value conditioning agent; preparing a solution added with the benzoyl acetone, the triphenylphosphine oxide and ethanol first, and then preparing an europium chloride hexahydrate ethanol solution and a sodium hydrate aqueous solution; dropping the europium chloride hexahydrate ethanol solution and the sodium hydrate aqueous solution into a four-hole boiling flask under a condition with heating, stirring and water circulation condensation to perform chemical reactions so as to prepare a ternary mixed solution; performing vacuum suction filtration, washing, recrystallization purification and vacuum drying on the ternary mixed solution to prepare white powder of the rare earth europium ternary complex, wherein the chromaticity coordinates are that X is equal to 0.6637 and Y is equal to 0.3351, and the rare earth europium ternary complex glows. The preparation method has the advantages of short process flow, fewer used devices, high yield up to 90 percent, good product purity up to 98 percent, good luminous performance and high luminous efficiency.

Description

technical field [0001] The invention relates to a preparation method of a rare earth europium ternary complex, which belongs to the technical field of organic electroluminescence material europium complexes and preparation methods. Background technique [0002] Rare earth complexes are coordination compounds formed by ligands surrounding rare earth metal ions. [0003] Because the rare earth metal ions in the rare earth complexes have a special electronic layer structure, after being excited by light, the organic ligands will absorb the radiation energy, so that the electrons of the rare earths will fluoresce due to energy level transitions. A highly stable luminescent material, commonly used in light-emitting devices and light energy converters, to emit red and blue light. [0004] Rare earth europium complex is a kind of element in rare earth complexes. In addition to the properties of rare earth complexes, it also has the characteristic fluorescence of pure europium ions...

AI Technical Summary

Problems solved by technology

[0005] The preparation of rare earth europium complexes is very important. At present, due to improper selection of ligands, poor structure design, and imperfect technology, there are many disadvantages in the preparation of rare earth europium complexes. For example, the structure of organic ligands is not good, and the preparation The method is unreasonable, the luminous efficiency is low, the energy transfer efficiency is low, and the molecular properties are not stable enough, so the synthesis of rare earth europium complexes needs further discussion and research

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