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Organic iridium metal complex and preparation method and application thereof

An iridium metal complex, organic technology, applied in indium organic compounds, platinum group organic compounds, organic chemistry, etc., can solve the problems of low blue light color purity and luminous efficiency, and achieve the effects of high yield and easy reaction

Inactive Publication Date: 2015-03-18
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a new organic iridium metal complex to solve the technical problems of the existing organic iridium metal complexes with low blue light color purity and low luminous efficiency

Method used

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

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preparation example Construction

[0038] Correspondingly, the embodiment of the present invention also provides a method that can be used to prepare the organic iridium metal complex of the general molecular structure formula (I), the preparation method flow is as follows figure 1 shown. The preparation method of the organic iridium metal complex comprises the following steps:

[0039] S01. Provide the compound A of the general formula of the following structural formula;

[0040]

[0041]S02. Using compound A to prepare chlorine bridge dimer B: in an oxygen-free environment, the compound A provided in step S01 is subjected to heat reflux reaction with iridium trichloride hydrate or sodium chloroiridite hydrate in a reaction solvent, Generate the chlorine bridge dimer B of following structural formula general formula:

[0042]

[0043] S03. Ligand exchange reaction between chlorine bridge dimer B and 3-trifluoromethyl-5-(2'-pyridyl)-1,2,4-triazole to prepare organic compound with general molecular stru...

Embodiment 1

[0084] Bis(2-(4',6'-difluoro-5'-cyanophenyl)-5-phenylpyrimidine-N,C 2 ')(3-trifluoromethyl-5-(2'-pyridyl)-1,2,4-triazole) iridium metal complex and its synthesis method:

[0085] (1) Synthesis of 2-(2',4'-difluoro-3'-cyanophenyl)-5-phenylpyrimidine:

[0086] The specific steps are: under nitrogen protection, mix 2.35g (10mmol) 2-bromo-5-phenylpyrimidine, 2.20g (12mmol) 2,4-difluoro-3-cyanophenylboronic acid and 0.58g (0.5mmol) Tetrakis(triphenylphosphine)palladium (ie palladium catalyst) was dissolved in 50mL of toluene, and then 25mL of an aqueous solution containing 2.76g (20mmol) of potassium carbonate was added dropwise to the reaction system. Stir the reaction under heating to 100°C for 10 h. After the reaction solution was cooled to room temperature, it was extracted with dichloromethane, separated, washed with water until neutral, and dried over anhydrous magnesium sulfate. After filtration, the filtrate was distilled off the solvent under reduced pressure to obtain ...

Embodiment 2

[0098] Bis(2-(4',6'-difluoro-5'-cyanophenyl)-4-(fluoren-9'-yl)pyrimidine-N,C 2 ')(3-trifluoromethyl-5-(2'-pyridyl)-1,2,4-triazole) iridium metal complex and its synthesis method:

[0099] (1) Synthesis of 2-(2',4'-difluoro-3'-cyanophenyl)-4-(fluoren-9'-yl)pyrimidine:

[0100] The specific steps are: under nitrogen protection, mix 3.23g (10mmol) 2-bromo-4-(fluoren-9'-yl)pyrimidine, 1.83g (10mmol) 2,4-difluoro-3-cyanophenylboronic acid and 0.21g (0.3mmol) dichlorobis(triphenylphosphine) palladium was dissolved in 60mL N,N-dimethylformamide solution (ie DMF), then 30mL containing 1.59g (15mmol) carbonic acid was added dropwise to the reaction system Aqueous solution of sodium. Stir the reaction under heating to 90°C for 12h. After the reaction solution was cooled to room temperature, it was extracted with dichloromethane, separated, washed with water until neutral, and dried over anhydrous magnesium sulfate. After filtration, the filtrate was distilled off the solvent under r...

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Abstract

The invention discloses an organic iridium metal complex and a preparation method and an application thereof. A molecular structure general formula of the organic iridium metal complex is shown in (I), wherein, R in (I) is an aromatic group. The preparation method comprises the steps of preparing a chlorine bridge biopolymer and using the chlorine bridge biopolymer to prepare the organic iridium metal complex with the structure general formula (I). The above organic iridium metal complex takes 2-(2',4'-difluoro-3'-cyanogens radical)pyrimidine as a main structure of an iridium metal ligand, and the organic iridium metal complex has high blue light purity and luminescence efficiency, and the organic iridium metal complex has high blue light purity and luminescence efficiency.

Description

technical field [0001] The invention belongs to the technical field of organic electrophosphorescent materials, and in particular relates to an organic iridium metal complex and its preparation method and application. Background technique [0002] Organic electroluminescence refers to a luminescence phenomenon in which organic materials directly convert electrical energy into light energy under the action of an electric field. In the early days, the research on organic electroluminescence was stagnant because of the high driving voltage and low luminous efficiency of organic electroluminescent devices. Until 1987, Tang et al. from Kodak Corporation of the United States invented 8-hydroxyquinoline aluminum (Alq3) as a light-emitting material, and made a uniform and dense high-quality film with aromatic diamines, which produced low operating voltage, high brightness, High-efficiency organic electroluminescent devices have opened a new prelude to the research on organic electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/54
CPCC09K11/06C07F15/0033C09K2211/1059C09K2211/1044C09K2211/1029C09K2211/185H10K85/342
Inventor 周明杰王平张娟娟黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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