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Iridium metal complex, preparation method thereof and organic electroluminescent device

A technology of iridium metal complexes and compounds, which is applied in the fields of chemical synthesis and optoelectronic materials, can solve the problems of low luminous efficiency and achieve the effects of high product purity, simple preparation steps, and improved luminous efficiency

Active Publication Date: 2020-06-12
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of existing iridium complexes in organic electroluminescent devices still has problems such as low luminous efficiency.

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

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Embodiment 1

[0047] This embodiment provides a kind of iridium metal complex, and its chemical structural formula is formula L001 in the summary of the invention, and the reaction route of the preparation method of this iridium metal complex is as follows:

[0048]

[0049] Its specific preparation method comprises the following steps:

[0050] Step 1: Under nitrogen protection system, weigh compound A-001 (2-phenylpyridine 64.5mmol, 10g), IrC1 3 ·3H 2 0 (24.8mmol, 8.75g) was put into the reaction system, a mixed solution of 300m1 ethylene glycol ether and 100m1 purified water was added, refluxed at 120°C for 24 hours under the protection of nitrogen, and then cooled to 25°C, there was precipitation, and the precipitate was pumped Filter, rinse with water, absolute ethanol, petroleum ether and dry in turn. Intermediate B-001 (6.64 g, yield 50%) was obtained as a yellow powder.

[0051] Step 2: Weigh intermediate B-001 (4.67mmol, 5g), add silver trifluoromethanesulfonate (14mmol, 3.6g...

Embodiment 2

[0055] This embodiment provides a kind of iridium metal complex, and its chemical structural formula is formula L041 in the summary of the invention, and the reaction route of the preparation method of this iridium metal complex is as follows:

[0056]

[0057] Its specific preparation method comprises the following steps:

[0058] Step 1: Under nitrogen protection system, weigh compound A-041 (58mmol, 10g), IrC1 3 ·3H 20 (19.3mmol, 6.8g) was put into the reaction system, a mixed solution of 300m1 ethylene glycol ether and 100m1 purified water was added, refluxed for 24 hours under the protection of nitrogen, and then cooled to 25°C, a precipitate was precipitated, and the precipitate was suction filtered. Rinse and dry in sequence with water, absolute ethanol, and petroleum ether. Intermediate B-041 (6.6 g, yield 60%) was obtained as a yellow powder.

[0059] Step 2: Weigh intermediate B-041 (5.8mmol, 6.6g), add silver trifluoromethanesulfonate (17.4mmol, 4.5g), then ad...

Embodiment 3

[0063] This embodiment provides a kind of iridium metal complex, and its chemical structural formula is formula L065 in the summary of the invention, and the reaction route of the preparation method of this iridium metal complex is as follows:

[0064]

[0065] Its specific preparation method comprises the following steps:

[0066] Step 1: Under nitrogen protection system, weigh compound A-065 (78.65mmol, 20g), IrC1 3 ·3H 2 0 (26.21mmol, 9.2g) was put into the reaction system, a mixed solution of 600m1 ethylene glycol ether and 200m1 purified water was added, refluxed at 120°C for 18 hours under the protection of nitrogen, and then cooled to room temperature 25°C, there was precipitation, and the precipitate Suction filtration, washing and drying with water, absolute ethanol, and petroleum ether in sequence. Intermediate B-065 (9.6 g, 50% yield) was obtained as a yellow powder.

[0067] Step 2: Weigh intermediate B-065 (6.5mmol, 9.6g), add silver trifluoromethanesulfonat...

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Abstract

The invention discloses an iridium metal complex, a preparation method thereof and an organic electroluminescent device, and belongs to the field of chemical synthesis and photoelectric materials. Thestructural general formula of the iridium metal complex is shown in the specification, wherein R1, R2, R3, R4, R5 and R6 are respectively and independently one or more of hydrogen, deuterium, halogen, cyano, alkyl, aryl and aromatic heterocyclic radical; the X and Y are respectively carbon or nitrogen, and are not nitrogen at the same time, wherein when Y is nitrogen, the R6 is hydrogen; the m and n are natural numbers, and m + n = 3. According to the iridium metal complex provided by the invention, the wavelength of the compound can be adjusted by selecting specific heterocyclic ligand binding, and after the iridium metal complex is used for an organic light-emitting device, the light-emitting efficiency of the device can be remarkably improved.

Description

technical field [0001] The invention relates to the fields of chemical synthesis and photoelectric materials, in particular to an iridium metal complex, a preparation method thereof and an organic electroluminescent device. Background technique [0002] Organic electroluminescent technology is the latest generation of flat-panel display technology, which can be used for flat-panel displays and lighting sources. At present, commercialized flat-panel displays have been put into the market, and lighting sources will soon be industrialized due to their own absolute advantages. Organic electroluminescent devices have an all-solid-state structure. Organic electroluminescent materials are the core and foundation of the device. The development of new materials is the driving force for the continuous progress of electroluminescent technology. The preparation of original materials and device optimization are also research hotspots in the organic electroluminescent industry. [0003] ...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185C09K2211/1029C09K2211/1011H10K85/615H10K85/654H10K85/342H10K85/6572H10K50/11
Inventor 王辉李建行赵贺陈明李明姜志远孙峰
Owner JILIN OPTICAL & ELECTRONICS MATERIALS