Iridium complex electroluminescent material, preparation method and application thereof

An electroluminescent material and luminescent technology, applied in the direction of luminescent materials, chemical instruments and methods, circuits, etc.

Inactive Publication Date: 2020-11-06
奥来德(上海)光电材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phosphorescent materials still need to be improved and developed in terms of reducing the cost of material preparation process, improving the basic photoelectric properties of materials, and improving the overall durability and weather resistance of materials after device integration.

Method used

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  • Iridium complex electroluminescent material, preparation method and application thereof
  • Iridium complex electroluminescent material, preparation method and application thereof
  • Iridium complex electroluminescent material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1 prepares compound F001

[0064]

[0065] Step 1. Under nitrogen protection system, weigh A-001 (73.70mmol, 20g), IrCl3 3H2O (24.57mmol, 8.66g) into the reaction system, add a mixed solution of 600mL ethylene glycol ether and 200mL pure water , refluxed under the protection of nitrogen for 24 hours, then cooled to room temperature, and a precipitate was precipitated, and the precipitate was filtered by suction, washed and dried with water, absolute ethanol, and petroleum ether in sequence to obtain the bridging ligand B-001 (11.2g, Yield 59.3%).

[0066] Step 2. Weigh intermediate B-001 (7.29mmol, 11.2g), add ligand C-001 (21.86mmol, 2.19g), then add ethylene glycol ether 250mL and potassium carbonate (72.88mmol, 10.07 g), under the protection of nitrogen, stirred at 120°C for 24 hours, suction filtered, washed with alcohol, dried, and used dichloromethane as a solvent, followed by silica gel column chromatography, and the filtrate was concentrated and s...

Embodiment 2

[0072] Embodiment 2 prepares compound F004

[0073]

[0074] Step 1. Under the nitrogen protection system, weigh A-004 (69.12mmol, 20g), IrCl 3 ·3H 2 O (23.04mmol, 8.12g) was put into the reaction system, a mixed solution of 600mL ethylene glycol ether and 200mL pure water was added, refluxed for 24 hours under the protection of nitrogen, and then cooled to room temperature, a precipitate was precipitated, the precipitate was suction filtered, and water , absolute ethanol, and petroleum ether were washed and dried in turn to obtain a red powder of bridging ligand B-004 (11.7 g, yield 63.13%).

[0075] Step 2. Weigh intermediate B-004 (7.27mmol, 11.7g), add ligand C-004 (21.82mmol, 2.18g), then add ethylene glycol ether 250mL and potassium carbonate (72.73mmol, 10.05 g), under the protection of nitrogen, stirred at 120°C for 24 hours, suction filtered, washed with alcohol, dried, used dichloromethane as solvent, and used silica gel column chromatography. The filtrate was c...

Embodiment 3

[0079] Embodiment 3 prepares compound F010

[0080]

[0081] Step 1. Under the nitrogen protection system, weigh A-010 (66.59mmol, 20g), IrCl 3 ·3H 2 O (22.2mmol, 7.83g) was put into the reaction system, a mixed solution of 600mL ethylene glycol ether and 200mL pure water was added, refluxed for 24 hours under the protection of nitrogen, and then cooled to room temperature, a precipitate was precipitated, and the precipitate was suction filtered, and water , absolute ethanol, and petroleum ether were washed and dried in turn to obtain a red powder of bridging ligand B-010 (11.6 g, yield 63.24%).

[0082] Step 2. Weigh the intermediate B-010 (7.02mmol, 11.6g), add the ligand C-010 (21.06mmol, 2.11g), then add ethylene glycol ether 250mL and potassium carbonate (70.19mmol, 9.70 g), under the protection of nitrogen, stirred at 120°C for 24 hours, suction filtered, washed with alcohol, dried, and used dichloromethane as a solvent, followed by silica gel column chromatography,...

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Abstract

The invention discloses an iridium complex electroluminescent material. The specific structural general formula of the iridium complex electroluminescent material is shown as the specification. The preparation method comprises the following steps of: 1, adding a raw material A and iridium trichloride into a mixed solvent of ethylene glycol monoethyl ether / water, and carrying out full reaction to prepare a bridging ligand intermediate B; and 2, adding potassium carbonate and ethylene glycol monoethyl ether into the intermediate B and an intermediate C, and carrying out full reaction to obtain the product. The invention also discloses an organic electroluminescent device containing the iridium complex electroluminescent material, the organic electroluminescent device comprises a first electrode, a second electrode and one or more organic matter layers arranged between the first electrode and the second electrode, and the organic matter layers contain the iridium complex electroluminescent material. According to the iridium complex electroluminescent material, the specific heterocyclic ligand is selected for combination, the wavelength of the compound is adjusted, and after the obtained iridium complex electroluminescent material is used for an organic electroluminescent device, the luminous efficiency of the device is remarkably improved, and the service life of the device is remarkably prolonged.

Description

technical field [0001] The invention relates to the field of organic photoelectric materials, and more specifically relates to an iridium complex electroluminescence material, a preparation method thereof and an electroluminescence device thereof. Background technique [0002] Organic electroluminescent technology is the latest generation of display technology. Light-emitting devices made of organic light-emitting materials have the advantages of lightness, thinness, and flexibility in appearance, especially flexible devices, which cannot be compared with other light-emitting materials. advantage. Over the past decade, organic electroluminescent technology has made some progress on the road to commercialization. For example, organic electroluminescent diodes (OLEDs) have been found in advanced displays for smartphones, televisions, and digital cameras. widely used. Organic electroluminescent materials are the core and foundation of electroluminescent devices. The developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185C09K2211/1088C09K2211/1029H10K85/342
Inventor 王辉谢星冰陈明曹淼王进政马晓宇
Owner 奥来德(上海)光电材料科技有限公司
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