A compound, an organic light-emitting display device

A light-emitting display and compound technology, which is applied in the field of compound and organic light-emitting display devices, can solve the problems of low device life, low efficiency, instability, etc., and achieve the effects of prolonging device life, widening the light-emitting area, and improving life

Active Publication Date: 2021-08-06
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high energy of blue light, the coordination bond between the metal of the blue phosphorescent material and the organic ligand is not stable, so that the device life of the blue phosphorescent device is low. In the current display products, the blue light material is a fluorescent material , longer life, but has the disadvantage of lower efficiency

Method used

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  • A compound, an organic light-emitting display device
  • A compound, an organic light-emitting display device
  • A compound, an organic light-emitting display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0081] According to one embodiment of the present invention, the compound is selected from

[0082]

[0083]

[0084]

[0085]

[0086]

[0087]

[0088] any of the.

[0089] According to one embodiment of the present invention, the compound is selected from any one of H12, H33, H44, H46, H60 and H79.

[0090] According to another aspect of the present invention, an organic light-emitting display device is provided, including an organic electroluminescent device, and the organic electroluminescent device includes:

[0091] An organic functional layer, the organic functional layer includes one or more organic film layers, and at least one of the organic film layers is a light-emitting layer;

[0092] The luminescent layer includes a luminescent material, and the luminescent material includes any one or more of the compounds described in the present invention.

[0093] According to one embodiment of the present invention, the compound is used as a host materi...

preparation Embodiment 1

[0124] Preparation Example 1 Synthesis of H12:

[0125]

[0126] Under nitrogen protection, weigh compound S2 (1.5mmol), S7 (3.2mmol), [Pd 2 (dba) 3 ]·CHCl 3(0.1mmol) and HP(tBu) 3 ·BF 4 (0.2mmol), was added to a 100mL two-necked flask. Inject 30 mL of toluene into the two-necked flask (pass N in advance 2 15min to remove oxygen), and then add 2.5mL concentration of 1M K 2 CO 3 Aqueous solution (pass N in advance 2 15min to remove oxygen), and stirred overnight at room temperature. After the reaction was completed, 20 mL of deionized water was added, followed by a few drops of 2M HCl. Extract with dichloromethane, collect the organic phase, and wash with anhydrous Na 2 SO 4 Dry processing. The dried solution was filtered, and the solvent was removed by a rotary evaporator to obtain a crude product. The crude product was purified by silica gel column chromatography, and the final purification afforded solid H12 (1.16 mmol, 71%).

[0127] MALDI-TOF MS: m / z calc...

preparation Embodiment 2

[0129] Preparation Example 2 Synthesis of H33:

[0130]

[0131] Under nitrogen protection, weigh compound S6 (1.95mmol), S8 (4.16mmol), [Pd 2 (dba) 3 ]·CHCl 3 (0.12mmol) and HP(tBu) 3 ·BF 4 (0.24mmol), was added to a 250mL two-necked flask. Inject 50mL of toluene into the two-necked flask (pass N in advance 2 15min to remove oxygen), and then add 3.5mL of 1M K2CO3 aqueous solution dropwise (pass N 2 15min to remove oxygen), and stirred overnight at room temperature. After the reaction was completed, 25 mL of deionized water was added, followed by a few drops of 2M HCl. Extract with dichloromethane, collect the organic phase, and wash with anhydrous Na 2 SO 4 Dry processing. The dried solution was filtered, and the solvent was removed by a rotary evaporator to obtain a crude product. The crude product was purified by silica gel column chromatography, and the final purification afforded solid H33 (1.32 mmol, 68%).

[0132] MALDI-TOF MS: m / z calculated: C40H20F6...

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Abstract

The invention relates to the technical field of organic electroluminescence materials, in particular to a compound and an organic light-emitting display device. The compound has a structure shown in formula (I): wherein, m, n, p, q, r, s, u, v are each independently selected from 0 or 1, and at least one of r and s is 1, At least one of u and v is 1, L 1 , L 2 , L 3 , L 4 Each independently selected from a substituted or unsubstituted C6-C40 aryl, or a substituted or unsubstituted C3-C40 heterocyclic group, A 1 、A 2 、A 3 、A 4 Each independently selected from electron acceptor units.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence materials, in particular to a compound and an organic light-emitting display device. Background technique [0002] According to the light-emitting mechanism, there are mainly four kinds of materials that can be used for the light-emitting layer of OLEDs: fluorescent materials, phosphorescent materials, triplet-triplet annihilation (TTA) materials, and thermally activated delayed fluorescence (TADF) materials. Among them, the theoretical maximum internal quantum yield of fluorescent materials does not exceed 25%, the theoretical maximum internal quantum yield of TTA materials does not exceed 62.5%; the theoretical maximum internal quantum yield of phosphorescent materials and TADF materials can reach 100%. [0003] At present, phosphorescent materials have been widely used due to their excellent properties of high luminous efficiency and relatively long-term stability of device ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D209/86C07D209/88C07D401/14C07D403/14C07D405/14C07D409/14C07D413/14C07D417/14C07D519/00C07F5/02C07F9/572C07F9/6571C09K11/06H01L51/54
CPCC07D417/14C07D519/00C07D403/14C07D413/14C07D209/86C07D405/14C07D409/14C07D401/14C07D209/88C07F5/027C07F9/657163C07F9/5728C09K11/06C09K2211/1029C09K2211/1051C09K2211/1044C09K2211/1033C09K2211/1059C09K2211/1011C09K2211/1088C09K2211/1092C09K2211/1096C09K2211/1007C09K2211/1014H10K85/626H10K85/654H10K85/656H10K85/6565H10K85/657H10K85/6572H10K85/6576H10K50/11H10K50/85H10K2101/30Y02E10/549H10K85/322H10K2101/10
Inventor 高威刘营张磊代文朋牛晶华黄高军
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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