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Iridium complex electroluminescent material, preparation method thereof and electroluminescent device thereof

A technology of electroluminescent materials and electrodes, which is applied in the directions of luminescent materials, electro-solid devices, electrical components, etc., to achieve the effect of long service life and improved luminous efficiency

Active Publication Date: 2020-05-08
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Iridium is combined with electroluminescent material F001, and the structural formula is:

[0089]

[0090] Concrete synthetic steps are as follows:

[0091] (1) Under nitrogen protection system, weigh A-001 (64.4mmol, 10.0g), IrC1 3 ·3H 2 O (21.48mmol, 7.57g) was put into the reaction system, a mixed solvent of 300mL ethylene glycol ether and 100mL pure water was added, refluxed at 130°C for 30h under the protection of nitrogen, and then cooled to room temperature, a precipitate was precipitated, and the precipitate was suction filtered. Rinse and dry in sequence with water, absolute ethanol, and petroleum ether to obtain bridging ligand B-001 (5.8 g, yield 50.4%) as a yellow powder;

[0092] (2) Weigh intermediate B-001 (4.66mmol, 5.0g), add silver trifluoromethanesulfonate (14mmol, 3.6g), then add 100mL of dichloromethane to the system, add 40mL of methanol, under nitrogen protection, Reflux at 55°C for 30 hours, cool to room temperature, and concentrate the fi...

Embodiment 2

[0104] Iridium is combined with electroluminescent material F009, and the structural formula is:

[0105]

[0106] Concrete synthetic steps are as follows:

[0107] (1) Under nitrogen protection system, weigh A-009 (64.43mmol, 10.0g), IrC1 3 ·3H 2 O (21.48mmol, 7.75g) was put into the reaction system, a mixed solvent of 300mL ethylene glycol ether and 100mL pure water was added, refluxed at 132°C for 28h under the protection of nitrogen, and then cooled to room temperature, a precipitate was precipitated, and the precipitate was suction filtered. Rinse and dry sequentially with water, absolute ethanol, and petroleum ether to obtain bridging ligand B-009 (5.8 g, yield 50.4%) as a yellow powder;

[0108] (2) Weigh intermediate B-009 (4.66mmol, 5g), add silver trifluoromethanesulfonate (14mmol, 3.6g), then add dichloromethane 100mL to the system, add methanol 40mL, under nitrogen protection, 58 Refluxed at ℃ for 28 hours, cooled to room temperature, and concentrated the fil...

Embodiment 3

[0120] Iridium is combined with electroluminescent material F019, and the structural formula is:

[0121]

[0122] Concrete synthetic steps are as follows:

[0123] (1) Under the nitrogen protection system, weigh A-019 (59.09mmol, 10g), IrC1 3 ·3H 2 O (19.7mmol, 6.95g) was put into the reaction system, a mixed solvent of 300mL ethylene glycol ether and 100mL purified water was added, refluxed at 135°C for 24h under the protection of nitrogen, and then cooled to room temperature, a precipitate was precipitated, and the precipitate was suction filtered. Rinse and dry in sequence with water, absolute ethanol, and petroleum ether to obtain bridging ligand B-019 (5.4 g, yield 48.6%) as a yellow powder;

[0124] (2) Weigh intermediate B-019 (4.43mmol, 5g), add silver trifluoromethanesulfonate (13.3mmol, 3.42g), then add 90mL of dichloromethane to the system, add 30mL of methanol, under nitrogen protection, Reflux at 60°C for 24 hours, cool to room temperature, and concentrate ...

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Abstract

The invention discloses an iridium complex electroluminescent material, and the structural formula is shown in the specification. A preparation method comprises the following steps: under the protection of nitrogen, carrying out a heating reaction on a compound A and iridium trichloride trihydrate to generate B, carrying out a reaction on the B and silver trifluoromethanesulfonate to generate C, and finally, carrying out a reaction on the C and a compound D to obtain the iridium complex electroluminescent material. 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, a 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 improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical 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...

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 王辉谢星冰陈明李明李建行赵贺马晓宇
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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