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Metal organic light-emitting material and application thereof in OLED (organic light-emitting diode) device

A luminescent material, a metal-organic technology, applied in luminescent materials, organic chemistry, electric solid-state devices, etc., can solve the problems of low phosphorescence efficiency, poor stability and life, and obstacles to commercialization

Pending Publication Date: 2022-03-01
北京燕化集联光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the U.S. patent of EP 3825320 A1 discloses a class of Ir complexes containing dibenzofuran ligands. Due to the serious problems of low phosphorescence efficiency, poor stability and lifespan in these compounds, their commercial use has been hindered. the possibility of

Method used

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  • Metal organic light-emitting material and application thereof in OLED (organic light-emitting diode) device
  • Metal organic light-emitting material and application thereof in OLED (organic light-emitting diode) device
  • Metal organic light-emitting material and application thereof in OLED (organic light-emitting diode) device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] Embodiment 1: the synthesis of compound I-1

[0130]

[0131] The synthesis path is as follows:

[0132]

[0133] In a 500mL three-necked flask equipped with mechanical stirring, reflux condensing device and nitrogen protection device, M1 (14.2g, 0.01mol) and H1 (3.4g, 0.01mol) were added in turn, and then 200ml of ethanol was added, and the mixture was heated to reflux for 24 After 1 hour, the reactant was cooled to room temperature, and the resulting yellow solid was filtered, dissolved in dichloromethane, and separated by column chromatography to obtain 4.36 g of a bright yellow solid with a yield of 52%.

[0134] Elemental analysis (C46H27D5IrN3O): theoretical C, 65.77; H, 4.44; Ir, 22.88; N, 5.00; O, 1.90; found C, 65.71, H, 4.38, N, 5.02.

Embodiment 2

[0135] Embodiment 2: the synthesis of compound 1-19

[0136]

[0137] The synthesis path is as follows:

[0138]

[0139] H4 was used to replace H1, an appropriate material ratio was selected, other raw materials and steps were the same as in Example 1, and 5.45 g of product I-19 was obtained with a yield of 61%.

[0140] Elemental analysis (C49H30D13IrN3O): theoretical C, 65.74; H, 6.30; Ir, 21.47; N, 4.69; O, 1.79; found C, 65.77, H, 6.32, N, 4.66.

Embodiment 3

[0141] Embodiment 3: the synthesis of compound I-21

[0142]

[0143] The synthesis path is as follows:

[0144]

[0145] Replace M1 with M2, replace H1 with H2, select the appropriate material ratio, and other raw materials and steps are the same as in Example 1 to obtain 4.88g of product I-21 with a yield of 55%.

[0146] Elemental analysis (C48H27D13FIrN3O): theoretical value C, 64.12; H, 5.94; F, 2.11; Ir, 21.38; N, 4.67;

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Abstract

The invention relates to the technical field of organic electroluminescent display, particularly discloses a metal organic light-emitting material, and also discloses an application of the metal organic light-emitting material in an organic electroluminescent device. The metal organic light-emitting material provided by the invention has a structure as shown in the specification. The electroluminescent device prepared from the metal organic light-emitting material disclosed by the invention shows excellent performances of high purity, high brightness and high efficiency.

Description

[0001] The invention relates to the technical field of organic electroluminescence display, and specifically discloses a metal-organic light-emitting material. This type of metal complex has significantly improved device luminescence life and efficiency, and also discloses its use in organic electroluminescence devices. Applications. Background technique [0002] In 1987, Tang et al. from Eastman Kodak Company of the United States reported for the first time a green electroluminescent device made of a double-layer organic film. The device uses indium tin oxide (ITO) as the anode, and a layer thickness of A 75nm amorphous non-pinhole aromatic diamine film is used for hole transport, and then a 60nm-thick 8-hydroxyquinoline aluminum film is coated on the aromatic diamine film to serve as an electron transport layer and The light-emitting layer uses magnesium-silver alloy as the cathode. This double-layer film structure successfully reduces the turn-on voltage to 5.5V, achieving ...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/54H01L51/50
CPCC07F15/0033C09K11/06C09K2211/185C09K2211/1029C09K2211/1092C09K2211/1096C09K2211/104C09K2211/1037C09K2211/1033C09K2211/1088H10K85/342H10K50/11
Inventor 段陆萌张小玲李仲庆呼建军杭德余程丹丹班全志
Owner 北京燕化集联光电技术有限公司
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