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Compound with mesitylene as core, preparation method thereof, and application of compound in organic light-emitting device

A compound, toluene technology, applied in the application field of organic electroluminescent devices, can solve problems such as performance differences

Inactive Publication Date: 2019-09-27
JIANGSU SUNERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, for the collocation of OLED devices with different structures, the photoelectric functional materials used have strong selectivity, and the performance of the same material in devices with different structures may be completely different.

Method used

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  • Compound with mesitylene as core, preparation method thereof, and application of compound in organic light-emitting device
  • Compound with mesitylene as core, preparation method thereof, and application of compound in organic light-emitting device
  • Compound with mesitylene as core, preparation method thereof, and application of compound in organic light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] The preparation of embodiment 1 intermediate

Embodiment 1-1

[0072] The preparation of embodiment 1-1 intermediate N

[0073]

[0074] Dissolve raw material I and raw material II in toluene, add Pd 2 (dba) 3 , triphenylphosphine and potassium tert-butoxide; under an inert atmosphere, react the mixed solution of the above reactants at a temperature of 90-110°C for 10-24 hours, cool and filter the reaction solution, spin the filtrate, and pass the residue through silica gel Column, obtain intermediate N; The mol ratio of described raw material I and raw material II is 1:(1.0-1.5); Pd 2 (dba) 3 The molar ratio to raw material I is (0.006-0.02):1, the molar ratio of sodium tert-butoxide to raw material I is (2.0-3.0):1; the molar ratio of triphenylphosphine to raw material I is (2.0-3.0) : 1; 1g raw material I adds 50-100mL toluene.

[0075] Take the synthesis of intermediate N-1 as an example:

[0076]

[0077] Nitrogen was passed into a 250mL three-necked flask, and 0.01mol 4-aminobiphenyl, 0.012mol 4-bromobiphenyl, 0.03mol pot...

Embodiment 1-2

[0082] The preparation of embodiment 1-2 intermediate M

[0083]

[0084] Step 1: Dissolve raw material III and raw material IV in toluene, add Pd 2 (dba) 3 , triphenylphosphine and potassium tert-butoxide; under an inert atmosphere, react the mixed solution of the above reactants at 90-110°C for 10-24 hours, cool and filter the reaction solution, spin the filtrate, and pass the residue through a silica gel column , to obtain intermediate O; the mol ratio of the raw material III to the raw material IV is 1:(1.0-1.5); Pd 2 (dba) 3 The molar ratio to raw material III is (0.006-0.02):1, the molar ratio of sodium tert-butoxide to raw material III is (2.0-3.0):1; the molar ratio of triphenylphosphine to raw material III is (2.0-3.0) : 1; 1g raw material III adds 50-100mL toluene.

[0085] Step 2: Dissolve intermediate O and raw material V in toluene, add Pd 2 (dba) 3 , triphenylphosphine and potassium tert-butoxide; under an inert atmosphere, react the mixed solution of th...

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Abstract

The invention provides a compound with mesitylene as a core, a preparation method thereof, and an application of the compound in an organic light-emitting device. The compound of the invention adopts the mesitylene as the core, and the branch chain of the compound includes a triarylamine structure, so the compound has a strong hole transporting ability and a high hole mobility; and the compound also has a role in electron blocking at a suitable LUMO level, so the recombination efficiency of excitons in a light-emitting layer is improved, the efficiency roll-off at a high current density is reduced, the voltage of the device is reduced, and the current efficiency and the lifetime of the device are improved. The three branch chains of the compound of the present invention are radial, and after the material forms a film, the branch chains can be intercrossed to form a highly dense film layer, so the leakage current of the OLED device using the material is reduced, thereby the service life of the device is prolonged.

Description

technical field [0001] The invention belongs to the technical field of semiconductors, and in particular relates to a compound with homobenzene as the core, a preparation method and an application in an organic electroluminescence device. Background technique [0002] Organic Light Emission Diodes (OLED) device technology can be used not only to manufacture new display products, but also to make new lighting products. It is expected to replace the existing liquid crystal display and fluorescent lighting, and has a wide application prospect. The OLED light-emitting device is like a sandwich structure, including electrode material film layers and organic functional materials sandwiched between different electrode film layers. Various functional materials are superimposed on each other according to the application to form an OLED light-emitting device. OLED light-emitting devices are current devices. When a voltage is applied to the electrodes at both ends, and the positive and...

Claims

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Application Information

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IPC IPC(8): C07D209/86C07D209/88C07D209/94C07D223/14C07D403/14C07D405/14C07D409/14C07D487/04C07D491/048C07D491/153C07D495/04C07D495/14C07D519/00H01L51/00H01L51/54
CPCC07D209/86C07D491/048C07D519/00C07D405/14C07D409/14C07D209/88C07D403/14C07D223/14C07D209/94C07D495/04C07D491/153C07D495/14C07D487/04H10K85/615H10K85/631H10K85/626H10K85/633H10K85/657H10K85/6574H10K85/6572H10K50/156H10K50/11C09K11/06
Inventor 庞羽佳张兆超李崇张小庆
Owner JIANGSU SUNERA TECH CO LTD
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