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Organic compound, electroluminescent material and application thereof

An organic compound, unsubstituted technology, used in the field of organic compounds and electroluminescent materials, can solve the problem of not many TADF materials, and achieve the effects of high efficiency transfer, good mobility, and good electron/hole mobility

Pending Publication Date: 2022-05-13
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are still not many TADF materials at present, so it is urgent to develop new high-performance TADF materials

Method used

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  • Organic compound, electroluminescent material and application thereof
  • Organic compound, electroluminescent material and application thereof
  • Organic compound, electroluminescent material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] This embodiment provides an organic compound M1, the structural formula of which is as follows:

[0066]

[0067] The preparation method of this organic compound M1 comprises the following steps:

[0068] (1) Preparation of compound c-1

[0069]

[0070] In a round bottom flask, add compound a-1 (10mmol), compound b-1 (12mmol) and Pd(OAc) 2 (0.1mmol) was added to DMF (50mL) and 20mmol sodium hydroxide, and reacted at 80°C for 12h. The resulting mixture was cooled to room temperature, added to water, and filtered through a pad of celite. The filtrate was extracted with dichloromethane, washed with water, and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude The product obtains target product c-1;

[0071] MALDI-TOF: [M+H] + : The theoretical value is 624.09, and the test value is 624.1.

[0072] (2) Preparation of compound e-1

[0073]

[0074] In a round bottom flask, add compound c-1 (5mmol), compound d-1 (6mmol) and Pd(...

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Abstract

The invention provides an organic compound, an electroluminescent material and application thereof. The organic compound has a structure as shown in a formula I. According to the compound provided by the invention, a main body 7-membered ring structure has an efficient energy transfer effect; a macromolecular plane has good mobility; the bipolar structure can balance transmission of electron holes. The compound provided by the invention has a relatively high single triplet state energy level beneficial to energy transfer, has a relatively planar molecular configuration, has better electron / hole mobility, and can efficiently transfer energy to a red phosphorescent material.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescent materials, and in particular relates to an organic compound, an electroluminescent material and applications thereof. Background technique [0002] With the development of electronic display technology, OLED is widely used in various display devices, and the research and application of OLED light-emitting materials are also increasing. [0003] According to the light-emitting mechanism, there are mainly four kinds of OLED light-emitting layer materials: (1) fluorescent materials; (2) phosphorescent materials; (3) triplet-triplet annihilation (TTA) materials; (4) thermally activated delayed fluorescence (TADF) )Material. Among them, fluorescence is the radiative attenuation transition of singlet excitons; phosphorescence is the light emitted by triplet excitons radiatively decaying to the ground state; TTA materials are two triplet excitons interacting to generate a singlet exci...

Claims

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Application Information

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IPC IPC(8): C07D487/06C07D519/00C09K11/06H01L51/54
CPCC07D487/06C07D519/00C09K11/06C09K2211/1029C09K2211/1044C09K2211/1088H10K85/653H10K85/6572
Inventor 华万鸣牛晶华林亚飞王建云张绍丽武文慧
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD