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Compound and application thereof

A compound and selected technology, applied in the fields of organic chemistry, electro-solid devices, semiconductor devices, etc., can solve the problems of high power efficiency, long life, and the current efficiency of organic electroluminescence devices needs to be further improved, and achieve high charge transfer capability. , long service life, high stability effect

Active Publication Date: 2022-03-01
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hole injection ability / transport ability, high power efficiency, and long life are obtained by introducing arylamines; proper glass transition temperature is obtained by introducing heterocyclic rings, thereby obtaining high-quality organic electroluminescent materials, but its organic electroluminescence The current efficiency of the device needs to be further improved

Method used

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  • Compound and application thereof
  • Compound and application thereof
  • Compound and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] In this example, compound A was synthesized, and the specific preparation method is as follows:

[0060] step 1):

[0061]

[0062] Specific steps are as follows:

[0063] 486mmol of compound 2, 463mmol of compound 1 and 14mmol of Pd(Ph 3 P) 4 Suspended in 1900ml THF. 463 ml of 2M potassium carbonate solution were slowly added to this suspension and the reaction mixture was heated at reflux for 16 hours. After cooling, the organic phase is separated off, filtered through silica gel, washed three times with 500 ml of water and then evaporated to dryness. Compound 3 was obtained by crystallization from MeOH.

[0064] Step (2):

[0065]

[0066] Specific steps are as follows:

[0067] 64 mmol of compound 4 were introduced into 400 ml THF at -78°C. At this temperature 30 ml of BuLi (2M in hexane) were added dropwise. After 1 hour, 94 mmol of compound 3 in 200 ml of THF was added dropwise. The batch was allowed to stir overnight at room temperature, added to ...

Embodiment 2

[0079] The preparation of Compound B differs from Example 1 in that the synthetic raw materials are different, and it is prepared by a preparation method similar to Compound A.

[0080] The yield of compound B was 78%. Characterization data: melting point (DSC) 286°C, purity 99.9%; 1 H NMR (400MHz, CDCl 3 )δ (ppm): 8.54 (m, 1H), 8.06 (m, 1H), 7.93 (m, 1H), 7.61 (s, 1H), 7.59 (s, 1H), 7.54 (m, 4H), 7.49 ( m,1H),7.48(m,4H),7.44(m,1H),7.42(m,1H),7.41(s,1H),7.38(m,1H),7.37(m,1H),7.32(m ,4H),7.28(m,1H),7.24(m,1H),7.22(m,2H),7.19(m,1H),7.13(m,1H),6.89(m,1H).

Embodiment 3

[0082] The preparation of Compound C differs from Example 1 in that the synthetic raw materials are different, and it is prepared by a preparation method similar to Compound A.

[0083] The yield of compound C was 81%. Characterization data: melting point (DSC) 280°C, purity 99.9%; 1 H NMR (400MHz, CDCl 3 )δ (ppm): 8.63 (m, 2H), 8.06 (s, 1H), 7.61 (s, 1H), 7.59 (s, 1H), 7.54 (m, 4H), 7.51 (m, 1H), 7.49 ( m,1H),7.48(m,4H),7.44(m,1H),7.42(m,2H),7.35(m,1H),7.34(m,1H),7.32(m,4H),7.28(s ,1H),7.24(m,1H),7.22(m,2H),7.19(m,1H),7.13(m,1H).

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Abstract

The invention provides a compound and application thereof, the compound has a structure as shown in formula I. The compound can be used as an electron transport material, and has high stability, high charge transfer capability and high glass transition temperature. And when the compound is applied to an organic electroluminescent device, relatively high luminous efficiency, relatively low driving voltage and relatively long service life can be obtained.

Description

technical field [0001] The invention belongs to the field of organic electroluminescent materials, and relates to a compound and its application. Background technique [0002] An organic electroluminescent element has a structure in which a light-emitting layer containing a light-emitting material is sandwiched between a hole-transport layer and an electron-transport layer, and an anode and a cathode are installed on both sides of the sandwich structure. Organic electroluminescence devices are devices that emit light (fluorescence or phosphorescence) when excitons are deactivated by recombination of holes and electrons injected into the light-emitting layer, and are used in displays and the like. [0003] In order for organic light-emitting devices to have sufficiently excellent characteristics, materials forming organic material layers, such as hole injection materials, hole transport materials, light emitting materials, electron transport materials, electron injection mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D491/107H01L51/54H01L51/50
CPCC07D491/107H10K85/654H10K85/657H10K85/6572H10K50/16Y02E10/549
Inventor 黄雪明
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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