Unlock instant, AI-driven research and patent intelligence for your innovation.
Compound and application thereof in field of organic light emitting
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A compound and organic technology, applied in the application field of organic electroluminescent devices, can solve the problems of lack of host materials, unfavorable carrier injection and transport balance, and high driving voltage, so as to improve fluorescence efficiency and widen excitons. Composite interface, the effect of improving device efficiency
Inactive Publication Date: 2019-05-28
BEIJING ETERNAL MATERIAL TECH +1
View PDF4 Cites 2 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, high-efficiency red light-emitting devices are rare, mainly due to the lack of suitable host materials.
[0005] At present, the host material widely used in phosphorescent devices is CBP, but it requires a high driving voltage, Tg=62°C, and is easy to crystallize
In addition, CBP is a p-type material, and the hole mobility is much higher than the electron mobility, which is not conducive to the balance of carrier injection and transport.
[0006] However, there is still much room for improvement in the luminescence performance of existing organic electroluminescent materials, and the industry urgently needs to develop new organic electroluminescent materials
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Synthetic example 1
[0059] Synthesis Example 1: Synthesis of Compound P2
[0060]
[0061] (1) Synthesis of compound fear P2-1
[0062] in N 2 Under protection, 24.6g (100mmol) M1, 22.44g (110mmol) iodobenzene, 0.38g (2mmol) CuI, 0.72g (4mmol) o-phenanthroline, 42.45g (200mmol) potassiumphosphate were added to a three-necked flask, And add 500ml of xylene, reflux at 145°C overnight. After the reaction, the obtained solution was cooled to room temperature, added with water and ethyl acetate for extraction, the organic phase was concentrated, and the obtained crude product was passed through the column with petroleumether and dichloromethane (PE:DCM=10:1) as the mobile phase. 20.15 g of white solidpowder was obtained with a yield of 60.7%. MS (m / e): 322. 1HNMR (δ, CDCl 3 ): 8.63-8.61 (1H, d), 7.77-7.74 (2H, m), 7.42-7.40 (1H, d), 7.34-7.28 (6H, m), 7.27-7.24 (1H, d).
[0063] (2) Synthesis of compound fear P2-2
[0064] in N 2 Under protection, 32.2g (100mmol) P2-1, 1.46g (2mmol) Pd (d...
Synthetic example 2
[0069] Synthesis Example 2: Synthesis of Compound P5
[0070] The synthetic route is the same as that of compound P2, except that the 4-chloro-2,6-diphenylpyrimidine of P2-4 is replaced by 2-chloro-4-phenylquinazoline to obtain 8.32g of the product, MS (m / e ): 614.2. (1HNMR(δ, CDCl 3 ):8.61-8.59(2H,d),7.99-7.97(1H,d),7.76-7.72(6H,m),7.61-7.59(1H,d),7.50-7.46(4H,d),7.43-7.41 (2H,d), 7.33-7.27(9H,m), 7.24-7.22(1H,d).
Synthetic example 3
[0071] Synthesis Example 3: Synthesis of Compound P24
[0072] The synthetic route is the same as that of compound P2, except that iodobenzene is replaced by 4-iododibenzothiophene to obtain 6.98 g of the product, MS (m / e): 720.2. (1HNMR(δ, CDCl 3 ):8.61-8.59(2H,d),7.99-7.97(1H,d),7.90-7.88(1H,d),7.76-7.72(8H,m),7.61-7.59(1H,d),7.52-7.46 (4H, m), 7.43-7.41 (2H, d), 7.33-7.27 (8H, m), 7.24-7.22 (1H, d).
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
Property
Measurement
Unit
thickness
aaaaa
aaaaa
Login to View More
Abstract
The invention relates to a compound. The structure of the compound is shown in a following formula (the formula is shown in the description), wherein L1 and L2 are respectively independently selectedfrom single-bond, substituted or unsubstituted arylidene or fused ring sub-aromatic hydrocarbon group containing C6 to C60, and substituted or unsubstituted heteroarylidene or fused heterocyclic sub-aromatic hydrocarbon group containing one or multiple heteroatoms and C5 to C60; Ar1 and Ar2 are respectively independently selected from substituted or unsubstituted arylidene or fused ring aromatic hydrocarbon group containing C6 to C60, and substituted or unsubstituted heteroaryl, arylamine group, secondary amine group or fused heterocyclic aromatic hydrocarbon group containing one or multiple heteroatoms and C5 to C60; at least one of Ar1 and Ar2 is a electron-deficient group. The invention also provides an organic electroluminescence device adopting the novel compound shown in the formula.The organic electroluminescence device has the advantages that the drive voltage is low, and the light emitting efficiency is high.
Description
technical field [0001] The invention relates to a novel general formula compound, in particular to a compound used in organic electroluminescent devices and its application in organic electroluminescent devices. Background technique [0002] Organic electroluminescent display (hereinafter referred to as OLED) has a series of advantages such as self-luminescence, low-voltageDC drive, full curing, wide viewing angle, light weight, simple composition and process, etc. Compared with liquid crystal display, organic electroluminescent display is not It needs a backlight source, has a large viewing angle, low power, and its response speed can reach 1000 times that of a liquid crystal display, but its manufacturing cost is lower than that of a liquid crystal display with the same resolution. Therefore, organic electroluminescent devices have broad application prospects. [0003] With the continuous advancement of OLED technology in the two major fields of lighting and display, peop...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More