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Benzofuran-containing organic iridium complex, preparation method thereof and photoelectric device

A technology of iridium complex and benzofuran, applied in indium organic compounds, platinum group organic compounds, electric solid devices, etc., can solve problems such as hindering the commercialization of OLEDs, and short lifespan of high-efficiency OLEDs of phosphorescent materials.

Inactive Publication Date: 2020-10-30
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

The practical application of OLED requires high efficiency and long life. However, the life of high-efficiency OLEDs of phosphorescent materials is still very short, which seriously hinders the commercialization of OLEDs of red, green and blue phosphorescent materials.

Method used

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  • Benzofuran-containing organic iridium complex, preparation method thereof and photoelectric device
  • Benzofuran-containing organic iridium complex, preparation method thereof and photoelectric device
  • Benzofuran-containing organic iridium complex, preparation method thereof and photoelectric device

Examples

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Comparison scheme
Effect test

Embodiment 1

[0069] The example of the complex provides a benzofuran-containing organic iridium complex, whose chemical structural formula is the formula K001 in the summary of the invention. The reaction scheme of the preparation method of the organic iridium complex is as follows:

[0070]

[0071] Its specific preparation method comprises the following steps:

[0072] (1) Under the nitrogen protection system, weigh compound A001 (67.72mmol, 20g) into the reaction flask, and put IrCl 3 ·3H 2 O (22.57mmol, 7.96g) was put into the reaction system, a mixed solution of 400mL ethylene glycol ether and 133mL pure water was added, and the temperature was raised to 120°C (reflux) under nitrogen protection for 24 hours. After the reaction was stopped, the system was cooled to room temperature. A red precipitate was precipitated, and the precipitate was suction-filtered, washed with water, absolute ethanol, and petroleum ether in sequence, and dried in a vacuum drying oven at 65°C to obtain an...

Embodiment 2

[0082] The example of the complex provides a benzofuran-containing organic iridium complex, whose chemical structural formula is the formula K035 in the summary of the invention. The reaction scheme of the preparation method of the organic iridium complex is as follows:

[0083]

[0084] Its specific preparation method comprises the following steps:

[0085] (1) Under the nitrogen protection system, weigh compound A035 (61.85mmol, 20g) into the reaction flask, and put IrCl 3 ·3H 2 O (20.62mmol, 7.27g) was put into the reaction system, a mixed solution of 400mL ethylene glycol ether and 133mL purified water was added, and the temperature was raised to 120°C (reflux) under nitrogen protection for 24 hours, and the system was cooled to room temperature after the reaction stopped. An orange-red precipitate precipitated, and the precipitate was suction-filtered, washed with water, absolute ethanol, and petroleum ether in sequence, and dried in a vacuum drying oven at 65° C. to ...

Embodiment 3

[0095] The example of the complex provides a benzofuran-containing organic iridium complex, whose chemical structural formula is the formula K049 in the summary of the invention. The reaction scheme of the preparation method of the organic iridium complex is as follows:

[0096]

[0097] Its specific preparation method comprises the following steps:

[0098] (1) Under the nitrogen protection system, weigh compound A049 (56.91mmol, 20g) and pack it into a reaction flask, and put IrCl 3 ·3H 2 O (18.97mmol, 6.69g) was put into the reaction system, a mixed solution of 400mL ethylene glycol ether and 133mL pure water was added, and the temperature was raised to 120°C (reflux) under nitrogen protection for 24 hours, and the system was cooled to room temperature after the reaction stopped. A dark red precipitate was precipitated, the precipitate was suction filtered, washed with water, absolute ethanol, and petroleum ether in sequence, and dried in a vacuum drying oven at 65°C to...

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Abstract

The invention discloses a benzofuran-containing organic iridium complex and a preparation method thereof, and a photoelectric device, and belongs to the technical field of luminescent materials, the structural general formula of the organic iridium complex is shown in the specification, in the formula, R1 and R2 are respectively independently represented as mono-, di- or non-substituent group; R3and R4 are independently represented as mono-, di-, tri-, tetra- or non-substituent; R5, R6 and R7 each independently represent a single substituent or no substituent; and R1, R2, R3, R4, R5, R6 and R7 are each independently at least one of hydrogen, deuterium, halogen, cyano, substituted or unsubstituted C1-C8 alkyl, substituted or unsubstituted C3-C15 cycloalkyl, substituted or unsubstituted C6-C18 aryl, and substituted or unsubstituted C4-C12 aromatic heterocyclic groups. The organic iridium complex can significantly reduce the driving voltage of the photoelectric device, significantly improve the current efficiency and power efficiency of the photoelectric device and prolong the service life of the photoelectric device.

Description

technical field [0001] The invention relates to the technical field of luminescent materials, in particular to an organic iridium complex containing benzofuran, a preparation method thereof and a photoelectric device. Background technique [0002] In 1987, Professor C.W.Tang Deng Qingyun made the "sandwich sandwich" structure OLED, which attracted a lot of attention from scholars. Since then, C.W.Tang has been honored as the father of OLED. In 2001, the phosphorescent device prepared by Prof. Adachi and others reached 100% internal quantum efficiency. In the same year, they used the DCM:Ir(ppy)3:CBP doping system to prepare a multilayer structure device, and obtained a high-efficiency device with an EQE of 9%, and the efficiency of the phosphorescent device was gradually improved. [0003] In addition to using high-efficiency materials to improve device performance, researchers have also improved the luminous performance and stability of OLEDs by improving the device struct...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185H10K85/342H10K50/11
Inventor 王艳丽陈剑锋陈明孙峰赵贺李明马晓宇
Owner 奥来德(上海)光电材料科技有限公司
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