Organic iridium metal complex, preparation method and application thereof

A technology of iridium metal complexes and organic compounds, applied in indium organic compounds, platinum group organic compounds, organic chemistry and other directions, can solve problems such as restricting the development and application of organic phosphorous luminescent materials, and achieve luminous efficiency and brightness improvement, high yield, Ease of purification

Pending Publication Date: 2020-06-26
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the efficiency of organic phosphorous luminescent materials in the prior art is insufficient when applied to organic

Method used

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  • Organic iridium metal complex, preparation method and application thereof
  • Organic iridium metal complex, preparation method and application thereof
  • Organic iridium metal complex, preparation method and application thereof

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preparation example Construction

[0048] The embodiment of the present invention also discloses a preparation method of an organic iridium metal complex, comprising the following steps:

[0049] 1) Under an inert gas protection system, add solvent A to the mixed system of compound A and iridium trichloride, and reflux at 110-130°C for 20-28h, cool and filter, and wash the precipitate to obtain compound B;

[0050] 2) Add solvent B and base to the mixed system of compound B and compound C, react for 20-28h under the protection of inert gas, and the reaction temperature is 110-130°C, after the reaction, wash the precipitate with alcohol, dry it, and chromatograph, Product 1 is obtained;

[0051] Its synthetic route is as follows:

[0052]

[0053] For further optimizing technical scheme of the present invention, in step (1), solvent A is the mixture of ethylene glycol ether and pure water, and the volume ratio of ethylene glycol ether and pure water is: 3:1; Washing is to use water, dehydrated alcohol Wash ...

Embodiment 1

[0060] A kind of organic iridium metal complex (numbering is L01), concrete synthetic steps are as follows:

[0061] 1) Under nitrogen protection system, weigh A-01 (35.2mmol, 10g), IrCl 3 ·3H 2 O (14.1mmo15g) was put into the reaction system, after adding a mixed solution of 200mL ethylene glycol ether and 67mL pure water, reflux at 120°C for 24 hours under the protection of nitrogen, after the reaction was completed, cool 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 a red powder of bridging ligand B-01 (7.3 g, yield 65%);

[0062] 2) Weigh the intermediate B-01 (4.6mmol, 7.3g), add the ligand acetylacetone C-01 (13.8mmol, 1.5g), then add 150mL of ethylene glycol ether and potassium carbonate (6.3g) to the system Finally, under the protection of nitrogen, stir at 120°C for 24 hours. After the reaction, the precipitate was suction-filtered, ...

Embodiment 2

[0070] An organic iridium metal complex (numbered as L17), the specific synthesis steps are as follows:

[0071] 1) Under nitrogen protection system, weigh A-17 (35mmol, 10g), IrCl 3 ·3H 2 O (16mmol, 5.6g) was put into the reaction system, after adding a mixed solution of 300mL ethylene glycol ether and 100mL pure water, refluxed at 110°C for 28 hours under the protection of nitrogen, and then cooled to room temperature, there was precipitation, and then the precipitate was pumped Filter, rinse and dry with water, absolute ethanol, and petroleum ether successively to obtain bridging ligand B-17 (7.6 g, yield 60%) of red powder;

[0072] 2) Weigh intermediate B-17 (4.8mmol, 7.6g), add ligand C-17 (14.4mmol, 2.2g), and then add ethylene glycol ether 150mL and potassium carbonate (6.6g) to the system, Under the protection of nitrogen, stir at 123°C for 20 hours. After the reaction, the precipitate was suction-filtered, washed with alcohol, dried, and dichloromethane was used as...

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Abstract

The invention discloses an organic iridium metal complex, a preparation method and application thereof, and belongs to the technical field of organic light-emitting materials. The structural general formula of the organic iridium metal complex provided by the invention is shown as chemical formula 1, and the target product shown as the chemical formula 1 is obtained by reacting a compound shown asgeneral formula A with iridium trichloride to obtain a compound shown as a general formula B of a bridging ligand and then reacting the compound shown as the general formula B with a compound shown as general formula C. When the organic iridium metal complex provided by the invention is applied to organic light-emitting devices, the light-emitting efficiency and the light-emitting brightness of the light-emitting devices can be improved, thus facilitating the use.

Description

technical field [0001] The invention relates to the technical field of organic luminescent materials, and more specifically relates to an organic iridium metal complex and its preparation method and application. 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, commercial flat-panel displays have been put into the market. Electroluminescent devices have an all-solid-state structure, organic electroluminescent materials are the core and foundation of the device, and the development of new materials is the driving force for the continuous progress of electroluminescent technology. An organic light-emitting device (OLED) is composed of a cathode, an anode, and an organic layer inserted between the cathode and the anode, that is, the device is composed of a transparent ITO anode, a hole injection layer (ETL), a hole transport la...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/05H01L51/30H01L51/42H01L51/46H01L51/50H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185H10K85/342H10K10/46H10K30/00H10K50/11Y02E10/549
Inventor 王辉李建行王海迪卢振阳郎兴旺张国旭马晓宇
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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