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Organic electroluminescent material containing phenanthrene structure and device thereof

A luminescent and electromechanical technology, applied in the direction of luminescent materials, electrical solid devices, electrical components, etc., can solve the problems of difficult balance between efficiency and luminous color, lack of blue light materials, and difficulty in charge injection, so as to improve the balance of charge transfer, Effects of High Blue Fluorescence Quantum Efficiency and Efficient Deep Blue Emission

Pending Publication Date: 2021-12-21
WUHAN SUNSHINE OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the wide bandgap of organic small-molecule blue-light fluorescent materials currently used most, it is difficult to inject charge into the device. In addition, the π-π conjugation in the material design process also easily leads to strong intramolecular charge transfer, resulting in It is difficult to balance the efficiency and luminous color due to the red shift of the luminescence of materials. Therefore, there is still a lack of blue light materials with superior comprehensive performance.

Method used

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  • Organic electroluminescent material containing phenanthrene structure and device thereof
  • Organic electroluminescent material containing phenanthrene structure and device thereof
  • Organic electroluminescent material containing phenanthrene structure and device thereof

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Embodiment Construction

[0062] It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0063] Synthesis of intermediate int-1

[0064]

[0065] S1. In a 250mL reaction flask, add (2-methylbenzoxazol-4-yl) boric acid (14.16g, 80mmol), 2-bromo-4-chlorobenzaldehyde (19.31g, 88mmol), potassium carbonate ( 22.08g, 160mmol), 150mL of toluene / ethanol / water mixed solvent with a volume ratio of 2:1:1, nitrogen exhaust, then, add tetrakis (triphenylphosphine) palladium (0.46g, 0.4mmol), heat to 85°C, stirred and reacted for about 8 hours, then cooled to room temperature, filtered, the filtrate was separated, the organic phase was concentrated, and purified with ethanol and / or tetrahydrofuran together with the filter cake to obtain 16.30 g of intermediate a1 with a yield of 75%. .

[0066] S2. In a 500mL reaction flask, add methoxymethyl triphenylphosphine chloride (20.57g, 60m...

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Abstract

The invention relates to the technical field of photoelectric material application, and discloses an organic electroluminescent material containing a phenanthrene structure and a device thereof. According to the organic electroluminescent material, an alkyl group and a specific functional group are introduced into a specific site of a phenanthrene-containing core structure to finely regulate and control the core structure, so that the luminescent main body material with excellent comprehensive performance is provided, and the problems of intramolecular charge transfer, luminescent red shift and the like of the existing luminescent main body material are effectively improved; and the organic electroluminescent device made of the material has remarkable progress in the aspects of driving voltage, current efficiency, service life and the like.

Description

technical field [0001] The invention belongs to the field of photoelectric material application technology, and in particular relates to an organic electroluminescent material containing a phenanthrene structure and a device thereof. Background technique [0002] Under the action of an electric field, organic electroluminescent materials (OLED) have the characteristics of converting electrical energy into light energy. Compared with other luminescent technologies, OLED luminescence has a series of advantages, such as self-luminescence, high efficiency, energy saving, and lightness. Flat panel display, solid-state lighting and other aspects show bright application prospects. [0003] High-energy blue light materials can be transferred to low-energy organic light-emitting materials such as green light and red light through energy transfer, which is of great significance for the preparation of full-emitting organic electroluminescent devices. However, due to the wide bandgap o...

Claims

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Application Information

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IPC IPC(8): C07D235/08C07D235/18C07D263/52C07D277/60C07D277/66C07D401/04C07D403/04C07D403/10C07D405/14C07D413/04C07D413/10C07D417/04C07D417/10C07D417/14C07D471/04C07D471/14C07F9/6506C07F9/653C07F9/6541C09K11/06H01L51/50H01L51/54
CPCC07D263/52C07D413/04C07D471/04C07D413/10C07F9/65324C07D277/60C07D417/04C07D277/66C07D471/14C07D403/04C07D235/18C07D403/10C07D417/10C07F9/65068C07D417/14C07D401/04C07F9/6541C07D235/08C07D405/14C09K11/06C09K2211/1011C09K2211/1014C09K2211/1029C09K2211/1033C09K2211/1037C09K2211/1044C09K2211/1059C09K2211/1088H10K85/615H10K85/631H10K85/636H10K85/626H10K85/633H10K85/654H10K85/657H10K85/6574H10K85/6572H10K50/11Y02E10/549
Inventor 穆广园庄少卿陶康王林
Owner WUHAN SUNSHINE OPTOELECTRONICS TECH CO LTD
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