Organic electroluminescent iridium coordination compound and preparation method and application thereof

An iridium complex, electroluminescence technology, applied in the directions of organic chemistry, luminescent materials, chemical instruments and methods, etc., can solve the problems of difficult synthesis of electroluminescent iridium complexes, low electroluminescence efficiency, poor solution processing performance, etc., Achieve the effect of improving carrier injection and transport capabilities, good host material properties, and promoting energy transfer
CN101759685AInactive Publication Date: 2010-06-30HEILONGJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEILONGJIANG UNIV
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an organic electroluminescent iridium coordination compound and a preparation method and application thereof, relating to an iridium-containing organic electroluminescent material and a preparation method thereof and application thereof. The invention solves the problems of the electroluminescent iridium coordination compound with a host-guest intergraded structure such as difficult synthesis, bad thermo-stabilization performance, bad solution processing performance and low electroluminescent efficiency. The coordination compound has the following formula. The method comprises the steps of: reacting benzaldehyde or ramification of the benzaldehyde with o-phenylenediamine; reacting a product after the reaction with hole transport group-substituted bromine to obtain ligand; reacting the ligand with iridium chloride; and reacting a product with glycerol and potassium carbonate to obtain the coordination compound. The organic electroluminescent iridium coordination compound is used in an organic electroluminescent device. The thermal decomposition temperature of the coordination compound is 402 DEG C, the synthesis is easy, the current density of the electroluminescent device is 200-450 mA / square centimeter, the luminosity is 2800-11000 cd / square meter, and the maximum external quatum efficiency is 6%.
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Description

technical field

[0001] The invention relates to an iridium-containing organic electroluminescent material and its preparation method and application, in particular to an alkyl-substituted phenylbenzimidazole iridium complex modified by a hole transport group, its preparation method and its application in electroluminescence device applications. Background technique

[0002] In the past ten years, optoelectronic information functional materials have received extensive attention and research as new materials with broad application prospects. Among them, organometallic complexes are used in organic electroluminescence and organic memory, or in organic laser and dye-sensitive materials. All of them have shown unique properties and broad application prospects. In recent years, with the gradual popularization of portable electronic devices, people have higher and higher requirements for the light weight and small size of display terminals. As a representative of the next generati...

Claims

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