Heteronuclear bimetallic complex light-emitting material and preparation method and application thereof

Abstract

The invention discloses a heteronuclear bimetallic complex light-emitting material. The invention also discloses a preparation method of the light-emitting material and application of the light-emitting material and aims at providing a material which is high in thermal stability, high in light stability and relatively high in light-emitting efficiency. The technical point is that the metal complex is provided with a structural formula which comprises an Al atom, an Eu atom, an 8-hydroxyquinoline and phenanthroline dual-ligand, two phenanthroline ligands and three dibenzoyl methane ligand, wherein the 8-hydroxyquinoline in the dual-ligand and the ligand 8-hydroxyquinoline are in coordination with a central atom Al together; and the phenanthroline dibenzoyl methane is in coordination with rare-earth metal europium. The heteronuclear bimetallic complex light-emitting material belongs to the technical field of light-emitting materials.

Description

technical field [0001] The invention relates to a luminescent material, specifically, a heteronuclear bimetallic complex luminescent material and its preparation and application, belonging to the technical field of luminescent materials. technical background [0002] Luminescent materials have a very wide range of applications, and have important applications in high-tech fields such as communications, satellites, radars, displays, records, optical computers, and biomolecular probes. Especially in today's information age, the demand for various information displays is greatly increased. It has greatly promoted the rapid development of luminescent materials. [0003] The application of luminescent materials includes two applications of photoluminescence and electroluminescence: (1) photoluminescence application, that is, it is used as a fluorescent material. Luminescent materials can be used as fluorescent dyes, fluorescent pigments, fluorescent reagents, laser dyes, etc...

AI Technical Summary

Problems solved by technology

The research and application of inorganic luminescence has a long history, but there are some insurmountable shortcomings in inorganic luminescent materials: few types, small adjustability, harsh use conditions, low energy efficiency, and difficulty in obtaining blue light, etc.

Small molecule organic light-emitting materials usually have good film-forming properties, high carrier mobility and good thermal stability, and are easy to obtain high-purity products through sublimation, but their luminous brightness is not as good as that of metal complexes, and they are prone to recrystallization , leading to a decrease in device stability

Organic polymer light-emitting materials usually have a high glass transition temperature, good thermal stability, and the manufacturing process of EL devices is relatively simple, especially easy to make large-area devices, but its biggest shortcoming is that it is difficult to obtain high purity; metal complexes Luminescent materials have the advantages of easy purification of small molecular organics and high fluorescence quantum efficiency, and usually have higher thermal stability and photostability, so they are considered to be the most promising type of luminescent materials, and they are especially concerned by people.

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