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A compound for organic light-emitting and its application

A compound and organic technology, applied in the field of organic light-emitting compounds, can solve the problems of reduced efficiency and lifespan, the service life of TADF devices does not meet the display application industry standards, and the display application is not expected. Transport properties, effects of excellent hole and electron transport properties

Active Publication Date: 2022-07-26
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most TADF emissive materials exhibit very broad emission spectra, making them undesirable for display applications
Additionally, the lifetime of TADF devices still does not meet industry standards for display applications
TADF devices also have serious efficiency reduction and lifetime issues at high brightness

Method used

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  • A compound for organic light-emitting and its application
  • A compound for organic light-emitting and its application
  • A compound for organic light-emitting and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] This embodiment provides the above-mentioned preparation method for the organic light-emitting compound.

[0029] ① Synthetic intermediates:

[0030]

[0031] Raw material (10mmol), p-dibromobenzene (8mmol, log) are added to the two-necked flask of 100mL, under nitrogen conditions, cuprous iodide (0.6mmol), potassium carbonate (10mmol), 1,10-o-phenanthroline ( 0.6 mmol), 50 mL of DMF, reacted at 155 °C for 48 hours; the mixture was extracted three times with ethyl acetate; the extract was washed with MgSO 4 dried, filtered, concentrated and subjected to column chromatography (silica gel, from 100:1 PE / CH 2 Cl 2 to 5:1PE / CH 2 Cl 2 gradient elution) to give a white solid.

[0032]

[0033] The above-mentioned white solid (10 mmol) was added to a two-necked flask of 100 mL, 30 mL of acetic acid was added, and 3 times the amount of hydrogen peroxide was added, and the temperature was raised to reflux for 2 hours; 4 dried, filtered, concentrated and subjected to ...

specific Embodiment 1

[0038]

[0039] Further purification using reverse phase column chromatography with acetonitrile as eluent gave a white solid and its structure was determined by mass spectrometry, HRMS Calcd for C 38 H 24 N 2 O 2 S: 572.16, Found: 572.14. Theoretical element content (%) C 38 H 24 N 2 O 2 S: C, 79.70; H, 4.22; N, 4.89; S, 5.60. Measured element content (%): C, 79.77; H, 4.20; N, 4.81; S, 5.65.

specific Embodiment 2

[0041]

[0042] Further purification using reverse phase column chromatography with acetonitrile as eluent gave a white solid and its structure was determined by mass spectrometry, HRMS Calcd for C 48 H 36 N 2 O 2 S: 704.25, Found: 704.29. Theoretical element content (%) C 48 H 36 N 2 O 2 S: C, 81.79; H, 5.15; N, 3.97; S, 4.55. Measured element content (%): C, 81.72; H, 5.11; N, 3.91; S, 4.50.

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Abstract

The present invention relates to a compound for organic light-emitting, wherein the structure of the compound is shown in formula (I): the formula (I) is further connected with a substituent group through a C-C bond. The molecular structure of the compound of the present invention is distorted, and has the characteristics of intermolecular aggregation, excellent thermal stability, and difficulty in crystallization. Meet the requirements of panel manufacturers.

Description

technical field [0001] The present invention relates to the technical field of semiconductors, and in particular, to a compound for organic light emission and its application. Background technique [0002] An organic electroluminescence (OLED, Organic Light Emission Diodes) device generally consists of two opposite electrodes and at least one layer of an organic light-emitting compound interposed between the two electrodes. Charges are injected into the organic layer formed between the anode and cathode to form electron and hole pairs, resulting in light emission from organic compounds with fluorescent or phosphorescent properties. Under the condition of electro-excitation, organic electroluminescent materials will generate 25% singlet state and 75% triplet state, and traditional fluorescent materials can only utilize singlet excitons due to spin forbidden. In order to utilize triplet excitons, researchers have proposed many methods, the most notable of which is the utiliza...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D417/10C07D491/153C09K11/06H01L51/54H01L51/50
CPCC07D417/10C07D491/153C09K11/06C09K2211/1037C09K2211/1029C09K2211/1033H10K85/657H10K85/6572H10K50/11
Inventor 田帅孙加宝
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD