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Compounds, organic electroluminescent materials, organic electroluminescent devices, electronic devices

A technology of organic light-emitting layers and compounds, applied in the direction of light-emitting materials, electric solid devices, silicon organic compounds, etc., can solve the problems of difficult molecular design, poor color purity, and aggravated molecular fluorescence quenching, so as to increase the internal electron density and stabilize properties, increased steric hindrance, and increased density

Active Publication Date: 2022-04-08
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, red light materials still have the problems of low luminous quantum efficiency and poor color purity.
The main reason for this situation is that red light comes from transitions between energy levels with narrow energy gaps, and organic compounds with narrow band gaps have certain difficulties in molecular design, and secondly, in the system of red light materials, there are The strong π-π bond interaction has strong charge transfer characteristics, so that there are more non-radiative relaxation channels in the narrow band gap, which intensifies the fluorescence quenching between molecules and reduces the quantum yield of the red light system. Rate

Method used

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  • Compounds, organic electroluminescent materials, organic electroluminescent devices, electronic devices
  • Compounds, organic electroluminescent materials, organic electroluminescent devices, electronic devices
  • Compounds, organic electroluminescent materials, organic electroluminescent devices, electronic devices

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preparation example Construction

[0070] As the preparation method of the organic electroluminescent device of the present invention, the following preparation methods can be listed, but not limited thereto, and those skilled in the art can make various changes according to the technical common knowledge in the field. The aforementioned preparation method comprises the following steps:

[0071] Cleaning process: use cleaning agent, deionized water, organic solvent, etc. to clean the glass substrate with ITO;

[0072] The step of forming a hole injection layer: a hole injection layer forming material containing the metal complex of the present invention is vapor-deposited on the aforementioned anode layer by vacuum evaporation, thereby forming holes containing the metal complex of the present invention on the aforementioned substrate. hole injection layer;

[0073] The process of forming a hole transport layer: forming a hole transport layer on the aforementioned hole injection layer by vacuum evaporation;

...

Embodiment 1

[0088] Preparation of compound SLC-B203:

[0089] The preparation method of compound SLC-B203, comprises the steps:

[0090] The first step: preparation of compound Int-1

[0091]

[0092] 10.0g (42.9mmol) of 2-bromobiphenyl (CAS: 2052-07-5) was dissolved in 100ml of dry THF, under the protection of nitrogen, the temperature was lowered to -78°C with liquid nitrogen, and 19ml of 2.5M n-Butyllithium n-hexane solution, stirred and reacted for 30 minutes, slowly added dropwise 13.0g (42.0mmol) of methyl 1-perylenecarboxylate (CAS: 2097797-89-0) dissolved in anhydrous THF, stirred and reacted for 1 hour Afterwards, rise to room temperature naturally, stir and react for 24 hours, add dropwise the saturated aqueous ammonium chloride solution of 100ml to quench the reaction, separate the organic phase, extract the aqueous phase with dichloromethane, and dry the organic phase with anhydrous sodium sulfate, filter, and reduce Concentrate to dryness under pressure to obtain a yello...

Embodiment 2

[0101] Preparation of Compound SLC-B246:

[0102]

[0103] Referring to the preparation method of the third step of Example 1, replace 4,4'-dimethyldiphenylamine in the third step of Example 1 with N-(4-isopropylphenyl) dibenzo[b,d ]furan-4-amine (CAS: 1252914-26-3) was obtained as an orange solid with a yield of 59%. 1 H-NMR (δ, CDCl 3 ): 8.164(2H,d), 8.003(2H,d), 7.836(2H,d), 7.558~7.530(4H,m), 7.501~7.476(8H,m), 7.322~7.253(8H,m), 7.146~7.085(8H,m), 6.862~6.841(4H,m), 2.413(2H,t), 1.214(6H,s)1.195(6H,s).

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Abstract

The present invention relates to a compound, an organic electroluminescent material containing the compound, an organic electroluminescent device, and an electronic device. The compound of the present invention is used in organic light-emitting layers and the like of organic electroluminescent devices.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence. Background technique [0002] Most of the substances used in organic electroluminescent devices are pure organic substances or organometallic complexes that form complexes between organic substances and metals. According to the application, they can be divided into hole injectors, hole transporters, luminescent substances, and electron transporters. , electron injectants, etc. Here, organic substances with relatively low ionization energy are mainly used as hole injectors or hole transporters, and organic substances with relatively high electronegativity are mainly used as electron injectors or electron transporters. In addition, the substance used as the luminescence assisting layer preferably satisfies the following characteristics. [0003] First, the materials used in organic electroluminescent devices need better thermal stability. The reason is that Joule heat occurs w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C211/61C07C255/58C07F7/08C07C217/84C07D307/91C07D333/76C07D213/74C07D409/14C07D209/86C07D265/38C07D219/02C07D241/46C07D225/08C07D213/16C07C15/20C07D251/24C07D239/26C07C211/54C07C15/24C07C13/72C07D235/02C07D471/04C07D401/10C07D519/00C07D263/57C09K11/06H01L51/50H01L51/54
Inventor 曹建华郭剑隋岩王士波纪秦思贾敏慧
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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