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Iridium metal complex, preparation method thereof and organic electroluminescent device

An iridium metal complex, selected technology, applied in electric solid devices, electrical components, luminescent materials, etc., can solve the problems of easy environmental pollution, high synthesis cost, and high purification requirements

Inactive Publication Date: 2020-04-21
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the high synthesis cost and high synthesis process requirements of phosphorescent materials, it is easy to pollute the environment during the synthesis process, the purification requirements are high, the life is short, and the efficiency is low.

Method used

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  • Iridium metal complex, preparation method thereof and organic electroluminescent device
  • Iridium metal complex, preparation method thereof and organic electroluminescent device
  • Iridium metal complex, preparation method thereof and organic electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Example 1 Preparation of compound numbered L001

[0089]

[0090] Step 1. Under the nitrogen protection system, weigh A-001 (64.5mmol, 10.00g), IrC1 3 ·3H 2 Put O (24.8mmo1, 8.75g) into the reaction system, add a mixed solution of 300mL ethylene glycol ether and 100mL purified water, reflux for 24 hours under nitrogen protection, and then cool to room temperature, where a precipitate precipitates. The precipitate is filtered off with water , Anhydrous ethanol and petroleum ether were washed and dried in sequence to obtain a yellow powder bridging ligand B-001 (7.05 g, yield 53%).

[0091] Step 2. Weigh intermediate B-001 (4.67mmol, 5.00g), add silver trifluoromethanesulfonate (14mmol, 3.58g), then add 100mL of dichloromethane to the system, add 40mL of methanol, and under nitrogen protection, After refluxing for 24 hours, cooling to room temperature, the column chromatography (short column) filtrate was concentrated until a solid precipitated to obtain the iridium complex in...

Embodiment 2

[0098] Example 2 Preparation of compound numbered L091

[0099]

[0100] Step 1. Under the nitrogen protection system, weigh A-091 (64.5mmol, 16.85g), IrC1 3 ·3H 2 Put O (24.8mmo1, 8.75g) into the reaction system, add a mixed solution of 300mL ethylene glycol ether and 100mL purified water, reflux for 24 hours under nitrogen protection, and then cool to room temperature, where a precipitate precipitates. The precipitate is filtered off with water , Anhydrous ethanol, and petroleum ether followed by washing and drying to obtain a yellow powder bridging ligand B-091 (9.65 g, yield 52%).

[0101] Step 2. Weigh intermediate B-091 (4.67mmol, 6.99g), add silver trifluoromethanesulfonate (14.00mmol, 3.58g), then add 100mL of dichloromethane to the system, add 40mL of methanol, and under nitrogen protection Reflux for 24 hours, cool to room temperature, and concentrate the filtrate by column chromatography (short column) until a solid precipitates to obtain the iridium complex intermediate...

Embodiment 3

[0108] Example 3 Preparation of compound numbered L126

[0109]

[0110] Step 1. Under the nitrogen protection system, weigh A-126 (64.5mmol, 16.84g), IrC1 3 ·3H 2 Put O (24.8mmo1, 8.75g) into the reaction system, add a mixed solution of 300mL ethylene glycol ether and 100mL purified water, reflux for 24 hours under nitrogen protection, and then cool to room temperature, where a precipitate precipitates. The precipitate is filtered off with water , Anhydrous ethanol, and petroleum ether followed by washing and drying to obtain a yellow powder bridging ligand B-126 (10.20 g, yield 55%).

[0111] Step 2. Weigh intermediate B-126 (4.67mmol, 6.99g), add silver trifluoromethanesulfonate (14mmol, 3.58g), then add 100mL of dichloromethane to the system, add 40mL of methanol, and under nitrogen protection, It was refluxed for 24 hours, cooled to room temperature, and the column chromatography (short column) filtrate was concentrated until a solid precipitated to obtain the iridium complex ...

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Abstract

The invention provides an iridium metal complex. The iridium metal complex has a structure shown as a formula I. According to the organic metal compound, metal iridium is combined with a specific heterocyclic ligand, and the wavelength of the compound is adjusted, so that after the obtained organic metal compound is applied to an organic electroluminescent device, the light-emitting efficiency andbrightness of the device can be remarkably improved. Meanwhile, the preparation method of the iridium metal complex provided by the invention has the characteristics of simple synthesis steps, low condition requirements, high target product yield and the like.

Description

Technical field [0001] The present invention relates to the technical field of organic photoelectric materials, in particular to an iridium metal complex, a preparation method thereof, and an organic electroluminescent device. Background technique [0002] In 1987, Dr. Qingyun Deng reported on the electroluminescent diode technology based on organic light-emitting materials, which mainly used vacuum evaporation to prepare double-layer devices with a transmission layer and a light-emitting layer. The quantum efficiency was increased to 1%, and the quantum efficiency was increased to 1%. Can reach 1000cd / m under the working voltage 2 Its brightness has attracted widespread attention from science enthusiasts around the world, and promotes organic electroluminescence technology to the practical stage. The electroluminescent device has an all-solid-state structure, and organic electroluminescent material is the core and foundation of the device. The development of new materials is th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185H10K85/342H10K50/11
Inventor 王辉刘志远李猛李国强李小龙魏忠义马晓宇
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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