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Triarylamine derivative and organic electroluminescent device thereof

A derivative, triarylamine technology, applied in the field of triarylamine derivatives and their organic electroluminescent devices, can solve the problems of poor film formation, low hole mobility, low luminous efficiency and low service life of light-emitting devices, etc.

Active Publication Date: 2021-09-14
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The Chinese patent application number 201711089080.2 describes a class of compounds used as hole transport layer materials. However, this type of structure has problems such as easy crystallization, poor film-forming properties, and low hole mobility, which lead to organic electroluminescence devices. The luminous efficiency and service life are low, so it is urgent to develop hole transport materials with good film-forming properties and stability

Method used

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  • Triarylamine derivative and organic electroluminescent device thereof
  • Triarylamine derivative and organic electroluminescent device thereof
  • Triarylamine derivative and organic electroluminescent device thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0151] Preparation and characterization of compounds

[0152] Description of raw materials, reagents, and characterization equipment:

Embodiment 48

[0249] [Example 48] Measurement of glass transition temperature

[0250] Test samples: Compound 1, Compound 3, Compound 14, Compound 16, Compound 17, Compound 28, Compound 39, Compound 48, Compound 59, Compound 64, Compound 72, Compound 78, Compound 90, Compound 103, Compound 115, Compound 137 , Compound 139, Compound 141, Compound 146, Compound 153, Compound 155, Compound 161, Compound 198, Compound 170, Compound 219, Compound 235, Compound 240, Compound 301, Compound 308, Compound 312, Compound 330, Compound 340, Compound 354, compound 361, compound 374, compound 386, compound 393, compound 399, compound 408, compound 415 and comparative compounds 1-2 were tested individually, and the mass of each sample was 5 mg.

[0251] Test instrument: DSC 25 Differential Scanning Calorimeter (TA Company, USA);

[0252] Test conditions: the test atmosphere is nitrogen, the flow rate of nitrogen is 50mL / min; the heating rate is 10°C / min, and the temperature range is 50-350°C. The glass ...

Embodiment 49

[0257] [Example 49] Test of material film-forming property:

[0258] Compound 17 of the present invention, compound 115, compound 146, compound 153, compound 354 and comparative compound 1 were vapor-deposited on ITO glass substrates to prepare samples with a thickness of 10 nm. The compounds of the present invention 17 and 115 were characterized by atomic force microscopy. , compound 146, compound 153, compound 354 and the thin film morphology of compound 1. The film morphology of each sample is as follows: figure 1 The obtained surface roughness values ​​are shown in Table 3:

[0259] Table 3: Surface Roughness (RMS) of Compounds

[0260] sample Surface Roughness (RMS) Compound 17 0.491 Compound 115 0.535 Compound 146 0.344 Compound 153 0.476 Compound 354 0.328 Comparative Compound 1 0.872

[0261] According to the results in Table 3, it can be seen that the compounds of the present invention have steric properties, the ...

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Abstract

The invention provides a triarylamine derivative and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescence. The triarylamine derivative provided by the invention has relatively high triplet state energy level, high hole mobility, high refractive index and good film-forming property and thermal stability, and when the triarylamine derivative is applied to the organic electroluminescent device, the driving voltage of the organic electroluminescent device can be effectively reduced, the luminous efficiency can be improved, the service life of the device can be prolonged, and the triarylamine derivative disclosed by the invention has a good application effect and industrialization prospect in organic electroluminescent devices.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a triarylamine derivative and an organic electroluminescence device thereof. Background technique [0002] Organic Light-Emitting Diode (OLED) refers to the phenomenon that organic semiconductor materials and luminescent materials lead to luminescence through carrier injection and recombination under the drive of an electric field, which can directly convert electrical energy into light energy. OLED is increasingly used for its advantages of active light emission, large viewing angle, fast response speed, wide temperature adaptation range, low driving voltage, low power consumption, high brightness, simple production process, light weight and flexible display. Used in commercial, electronic products, transportation, industry, medical, and military fields, it is considered to be a new type of flat panel display device that can replace liquid crystal displays. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D209/86C07D209/88C07D219/08C07D219/14C07D403/12C07D405/12C07D405/14C07D409/12C07D409/14C07D413/12C07D413/14C07D417/12C07D417/14H01L51/50H01L51/54H01L51/52H10K99/00
CPCC07D209/88C07D405/12C07D413/12C07D409/12C07D403/12C07D417/12C07D405/14C07D409/14C07D417/14C07D413/14C07D209/86C07D219/08C07D219/14H10K85/624H10K85/636H10K85/626H10K85/633H10K85/631H10K85/615H10K85/6576H10K85/6574H10K85/657H10K85/6572H10K50/15H10K50/18H10K85/656H10K85/622C07D209/82C07B2200/05H10K85/623H10K85/654H10K85/6565H10K50/11H10K50/12H10K2101/10
Inventor 刘辉邵钰杰王英雪
Owner CHANGCHUN HYPERIONS TECH CO LTD
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