Organic material and application thereof in OLED device

A technology of organic materials and devices, applied in the field of organic electroluminescent display, to achieve high thermal stability, high film-forming stability, and the effect of improving photoelectric performance

Active Publication Date: 2021-06-15
北京燕化集联光电技术有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lifetime of the excited state of phosphorescent materials is long, and triplet-triplet annihila

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic material and application thereof in OLED device
  • Organic material and application thereof in OLED device
  • Organic material and application thereof in OLED device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] According to the preparation method provided by the present invention, those skilled in the art can use known common means to realize, such as further selecting suitable catalysts, solvents, determining suitable reaction temperature, time, material ratio, etc., the present invention is not particularly limited to this . Unless otherwise specified, the solvents, catalysts, bases and other raw materials used in the preparation process can be synthesized through open commercial channels or methods known in the art.

[0034] Synthesis of Intermediates M1~M16

[0035] Synthesis of Intermediates M1 and M2

[0036]

[0037] The synthetic route is as follows:

[0038]

[0039] The specific operation steps are:

[0040](1) Add dichloromethane (200mL) and aluminum trichloride (29.3g, 0.22mol) to a 2L three-necked flask equipped with mechanical stirring, start stirring, and add 4-bromophthalic anhydride (22.6g, 0.1mol) in dichloromethane (150mL), stirred at room temperat...

Embodiment 1

[0087] The synthesis of embodiment 1 compound 1-5

[0088]

[0089] The synthetic route is as follows:

[0090]

[0091] A 2L three-neck flask equipped with a magnetic stirrer, and sodium tert-butoxide (28.8g, 0.3mol), 3,6-diphenyl-9H-carbazole (31.9g, 0.1mol) and 400ml toluene were added sequentially after nitrogen replacement. After nitrogen replacement again, (0.4 g, 2 mmol) tri-tert-butylphosphine and (0.92 g, 1 mmol) tribenzylideneacetone dipalladium were added in sequence. After the addition was complete, the temperature was raised to 85°C. Start to drop a solution consisting of (49.0 g, 0.1 mol) M1 and 100 ml of toluene, heat to reflux (110-120° C.) for 4 hours, and the reaction ends. Adjust to neutral, separate the organic phase, extract, dry, perform column chromatography, and spin dry the solvent to obtain 59.8 g of light yellow solid I-5 with a yield of about 82%.

[0092] Product MS (m / e): 729.20; Elemental analysis (C 49 h 31 NO 4 S): theoretical value...

Embodiment 2

[0093] The synthesis of embodiment 2 compound I-18

[0094]

[0095] The synthetic route is as follows:

[0096]

[0097] Use M2 to replace M1, 9H-tribenzo[a,c,i]carbazole to replace 3,6-diphenyl-9H-carbazole, select an appropriate material ratio, other raw materials and steps are the same as those in Example 1 In the same way, 61.8 g of light yellow solid I-18 was obtained, with a yield of about 85%.

[0098] Product MS (m / e): 727.18; Elemental analysis (C 49 h 27 NO 4 S): theoretical value C: 80.86%, H: 4.02%, N: 1.92%; measured value C: 80.90%, H: 4.06%, N: 1.75%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of organic electroluminescence display, and particularly relates to an organic material and application thereof in OLED devices. The organic material has a structural formula as shown in a formula (I), can be used as a green light main body material, has a relatively high triplet state energy level, has relatively good carrier mobility, can be matched with an adjacent energy level, also has relatively high thermal stability and film forming stability, can be well applied to OLED devices, and shows low driving voltage and high luminous efficiency.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescence display, and in particular relates to an organic material and its application in OLED devices. Background technique [0002] The application of organic electroluminescent (OLED) materials in information display materials, organic optoelectronic materials and other fields has great research value and bright application prospects. With the development of multimedia information technology, the performance requirements of flat panel display devices are getting higher and higher. At present, the main display technologies include plasma display devices, field emission display devices and organic electroluminescent display devices (OLED). Among them, OLED has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, and rich colors. Compared with liquid crystal display devices, OLED does not require a backlight, has a wider viewing angle...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07D333/78C07D409/04C07D409/10C07D409/14C07D471/14C07D487/04C07D495/04C07D519/00H01L51/54H01L51/50
CPCC07D409/14C07D409/04C07D471/14C07D487/04C07D519/00C07D409/10C07D495/04C07D333/78H10K85/655H10K85/657H10K85/6572H10K85/6574H10K85/6576H10K50/11
Inventor 梁现丽陈婷温洁段陆萌杭德余曹占广班全志
Owner 北京燕化集联光电技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products