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Organic electroluminescent material and applications thereof

An unsubstituted and selected technology, applied in the fields of light-emitting materials, organic chemistry, circuits, etc., can solve the problems of shortened life, mismatch of electrons and holes in the light-emitting layer, and efficiency roll-off.

Active Publication Date: 2020-04-03
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single carrier transport capability will cause a mismatch of electrons and holes in the light-emitting layer, resulting in severe efficiency roll-off and shortened lifetime

Method used

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  • Organic electroluminescent material and applications thereof
  • Organic electroluminescent material and applications thereof
  • Organic electroluminescent material and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 2

[0077] Synthesis of Compound P1

[0078]

[0079] In the reaction flask, add M10g (38mmol), bromobenzene 6g (38mmol), Pd 2 (dba) 3 0.1g (0.785mmol, 0.5%), S-Phos0.1g, toluene 200mL, sodium tert-butoxide 5.7, react at 100°C for 5h. After the reaction is complete, stop the reaction. Cool to room temperature, add water and ethyl acetate for extraction, and concentrate the organic phase to obtain a solid that is purified by recrystallization from toluene to obtain P1-A as a white powder.

[0080] In the reaction flask, add P1-A8g (23.7mmol), 2-bromonaphthalene 5g (23.7mmol), Pd 2 (dba) 3 0.1g (0.785mmol, 0.5%), S-Phos0.1g, xylene 200mL, sodium tert-butoxide 5.7, react at 150°C for 6h. After the reaction is complete, stop the reaction. Cool to room temperature, add water and dichloromethane for extraction, and concentrate the organic phase to obtain a solid that is purified by recrystallization from toluene to obtain P1 as a white powder.

[0081] 1 H NMR (500MHz, Chlo...

Synthetic example 3

[0083] Synthesis of compound P3

[0084] The reaction is the same as in Synthesis Example 1, except that 2-bromonaphthalene is replaced by an equivalent amount of 4-bromobiphenyl, resulting in the final product P3.

[0085] 1 H NMR (500MHz, Chloroform) δ8.55 (dd, J = 14.2, 3.7Hz, 1H), 8.00 (dd, J = 14.9, 3.0Hz, 1H), 7.92 (s, 4H), 7.81–7.69 (m, 2H),7.68–7.56(m,3H),7.56–7.35(m,7H),7.21–7.04(m,3H),6.92(td,J=15.0,3.0Hz,1H).

Synthetic example 4

[0087] Synthesis of compound P9

[0088] The reaction is the same as in Synthesis Example 1, except that 2-bromonaphthalene is replaced by an equivalent amount of 2-chloro-4,6-diphenyl-1,3,5-triazine, and the final product is P9.

[0089] 1 H NMR (500MHz, Chloroform) δ8.55 (dd, J = 14.2, 3.7Hz, 1H), 8.43–8.27 (m, 4H), 8.00 (dd, J = 14.9, 3.0Hz, 1H), 7.70–7.41 ( m,13H),7.22–7.04(m,3H),6.92(td,J=15.0,3.0Hz,1H).

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PUM

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Abstract

The invention discloses a compound represented by a general formula (I), wherein X is selected from S and O, R<1> and R<2> are respectively and independently selected from hydrogen, C1-C12 alkyl, C1-C12 alkoxy, halogen, cyano, nitro, hydroxyl, silyl, amino, substituted or unsubstituted C6-C30 arylamino, substituted or unsubstituted C3-C30 heteroarylamino, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl, a and b are same or different, and respectively and independently represent an integer of 0-4, L<1> and L<2> are respectively and independently selected from a single bond, substituted or unsubstituted C6-C30 arylene and substituted or unsubstituted C3-C30 heteroarylene, and Ar<1> and Ar<2> are respectively and independently selected from substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl. When the compound provided by the invention is used as a phosphorescent light-emitting host material in an OLED device, excellent device performance and excellent stability are shown. The invention also discloses an organic electroluminescent device adopting the compound represented by the general formula.

Description

technical field [0001] The invention relates to an organic compound, in particular to a compound used in an organic electroluminescent device and its application in the organic electroluminescent device. Background technique [0002] Organic electroluminescent display (hereinafter referred to as OLED) has a series of advantages such as self-luminescence, low-voltage DC 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, people pay m...

Claims

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Application Information

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IPC IPC(8): C07D495/14C07D491/147C09K11/06H01L51/50H01L51/54
CPCC07D495/14C07D491/147C09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1044C09K2211/1059C09K2211/1088C09K2211/1092H10K85/649H10K85/657H10K85/6572H10K85/6574H10K85/6576H10K50/11
Inventor 李之洋邢其锋任雪艳
Owner BEIJING ETERNAL MATERIAL TECH
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