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Tetradentate cyclometalated platinum (II) complex based on carboxyl coordination and containing pyridyl acridine, and application thereof

A pyridyl acridine, metal platinum technology, applied in the field of tetradentate ring metal platinum complexes, can solve problems such as low quantum efficiency

Active Publication Date: 2020-08-11
ZHEJIANG UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a tetradentate ring metal platinum (II) complex based on carboxyl coordination and containing pyridyl acridine and its application, so as to solve the problem of low quantum efficiency in existing phosphorescent materials. The material has high quantum efficiency and good stability, and can be used as a light-emitting material in OLED devices

Method used

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  • Tetradentate cyclometalated platinum (II) complex based on carboxyl coordination and containing pyridyl acridine, and application thereof
  • Tetradentate cyclometalated platinum (II) complex based on carboxyl coordination and containing pyridyl acridine, and application thereof
  • Tetradentate cyclometalated platinum (II) complex based on carboxyl coordination and containing pyridyl acridine, and application thereof

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Embodiment 1

[0029] Embodiment 1: Platinum complex Pt1 can be synthesized according to the following route:

[0030]

[0031]

[0032] Synthesis of intermediate 2b: Add intermediate 1a (1.50g, 4.11mmol, 1.00 equivalents), pinacol borate (1.57g, 6.17mmol, 1.50 equivalents) successively to a dry three-necked flask with a magnetic stirring rotor, [1,1'-bis(diphenylphosphino)ferrocene]palladium dichloride (120mg, 0.16mmol, 0.04eq), potassium acetate (1.61g, 16.44mmol, 4.00eq), then pump nitrogen three times , and added dimethyl sulfoxide (25 mL) under nitrogen protection. The mixture was stirred and reacted in an oil bath at 80° C. for 24 hours, cooled to room temperature, extracted with ethyl acetate, the organic layer was washed twice with water, and the aqueous layer was extracted twice with ethyl acetate. The organic phases were combined, dried over anhydrous sodium sulfate, filtered, and the solvent was distilled off under reduced pressure. The obtained crude product was separated...

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Abstract

The invention relates to the technical field of organic luminescent materials, and provides a tetradentate cyclometalated platinum (II) complex based on carboxyl coordination and containing pyridyl acridine and application of the tetradentate cyclometalated platinum (II) complex. The tetradentate cyclometalated platinum (II) complex has a structure as shown in a general formula (I) which is described in the specification. According to the tetradentate cyclometalated platinum (II) complex, a tetradentate ligand containing an oxygen anion strong field ligand is adopted, so coordination capacityis high, rigidity is high, and quantum efficiency and light stability can be improved at the same time.

Description

technical field [0001] The invention relates to the technical field of organic luminescent materials, in particular to a tetradentate ring metal platinum (II) complex based on carboxyl coordination and containing pyridyl acridine and an application thereof. Background technique [0002] OLED is an organic light-emitting diode (Organic Light-Emitting Diode) is an autonomous light-emitting device that does not require a backlight source. It has the advantages of fast response, low energy consumption, high luminous efficiency, high contrast, simple production process, and large-area production. . The luminescent materials used in early devices are mainly organic small molecule fluorescent materials, but spin statistical quantum studies show that the theoretical internal quantum efficiency of fluorescent materials is only 25%. In 1998, Professor Forrest of Princeton University in the United States discovered the phosphorescence electroluminescence phenomenon of metal-organic co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/54H01L51/50H10K99/00
CPCC07F15/0086C09K11/06C09K2211/185H10K85/346H10K50/11H10K50/12H10K2101/10C09K2211/1029
Inventor 李贵杰沈刚佘远斌周春松
Owner ZHEJIANG UNIV OF TECH
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