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Condensed polycyclic compound, preparation method and application thereof

A technology for fused polycyclic compounds, which is applied in the field of fused polycyclic compounds and their preparation, can solve the problems of easy crystallization, low glass transition temperature, inability to have both thermal stability and high triplet energy level, etc.

Inactive Publication Date: 2019-10-15
NINGBO LUMILAN NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of low glass transition temperature, easy crystallization, poor thermal stability, and inability to have both good thermal stability and high triplet energy level in the main material of the light-emitting layer in the prior art

Method used

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  • Condensed polycyclic compound, preparation method and application thereof
  • Condensed polycyclic compound, preparation method and application thereof
  • Condensed polycyclic compound, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] This embodiment provides a fused polycyclic compound having the structure shown in the following formula 003:

[0092]

[0093] The synthetic route of the compound shown in formula 003 is as follows:

[0094]

[0095] The preparation method of the compound shown in formula 003 specifically comprises the following steps:

[0096] (1) Preparation of intermediate 003-B

[0097] Add 500mL of acetic acid in the there-necked flask, then add 72.0g (0.20mol) of the compound shown in formula 003-A, add 20.3g (0.21mol) of concentrated nitric acid with a mass fraction of 65% dropwise at 0°C, after the addition is complete, the Stir at ℃ for 2 hours, pour the reaction solution into 800 mL of ice water, add sodium hydroxide to neutralize the solution to a pH of 6-7, extract twice with 500 mL of ethyl acetate, combine the organic phases, and wash the organic phases with 200 mL of saturated brine for 2 After drying with anhydrous sodium sulfate, the dried organic phase was spi...

Embodiment 2

[0108] This embodiment provides a fused polycyclic compound having the structure shown in the following formula 001:

[0109]

[0110] The difference between the preparation steps of the compound shown in formula 001 and the preparation steps of the compound shown in 003 provided in Example 1 is only:

[0111] The compound represented by formula 003-C-1 was used to replace the compound 003-C in the step (2) of Example 1, and the total yield of the compound represented by the structure represented by 001 was 25.7%.

[0112]

Embodiment 3

[0114] This embodiment provides a fused polycyclic compound having the structure shown in the following formula 002:

[0115]

[0116] The difference between the preparation steps of the compound shown in formula 002 and the preparation steps of the compound shown in 003 provided in Example 1 is only:

[0117] The compound represented by formula 003-C-2 was used to replace the compound 003-C in the step (2) of Example 1, and the total yield of the compound represented by the structure represented by 002 was 24.9%.

[0118]

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Abstract

The invention relates to the field of display technologies, in particular to a condensed polycyclic compound, a preparation method and application thereof. The condensed polycyclic compound provided by the invention has a structure shown as formula (I). The compound structure has double dipolarity, the HOMO energy level and LUMO energy level of a main material can be located on different electron-donating groups and electron-withdrawing groups, so that the charge and hole transport balance in the main material is good, thus enlarging the area of hole and electron recombination in a luminescentlayer, lowering the exciton concentration, and improving the device efficiency. The invention also provides an organic electroluminescent device. At least one functional layer of the organic electroluminescent device contains the condensed polycyclic compound. And use of the compound as the main material of the luminescent layer can reduce the working voltage of OLED devices and improve the current efficiency.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a fused polycyclic compound and its preparation method and application. Background technique [0002] Organic light-emitting diodes (organic light-emitting diodes, OLEDs) are more promising than liquid crystal display technology in the future due to their advantages of fast response, low energy consumption, self-illumination, wide color gamut, ultra-thin, foldable and flexible. The new display technology has attracted more and more people's attention. [0003] In 1987, Deng Qingyun and others in the laboratory of Eastman Kodak in the United States made the first organic light-emitting diode (organic light-emitting diodes, OLED) device (hereinafter referred to as OLED device) by vacuum evaporation for the first time. It uses transparent and conductive indium tin oxide (ITO) as the cathode, and sequentially vapor-deposits diamine derivatives and tris(8-hydroxyquinoline)aluminum o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D495/04C07F5/02C07D519/00C07F9/6584C07D491/048C07D491/153C07D495/14C07D491/147C07D495/22H01L51/50H01L51/54
CPCC07D495/04C07F5/027C07D519/00C07F9/6584C07D491/048C07D491/153C07D495/14C07D491/147C07D495/22H10K85/654H10K85/657H10K85/6572H10K50/11C07D513/04H10K85/322H10K85/342H10K2101/10C07D498/04C07F9/5765H10K85/30H10K10/00H10K30/00H10K50/12H10K50/14C07D239/70H10K50/15H10K50/16H10K50/17H10K50/18H10K50/121H10K50/171H10K71/00H10K71/164H10K2101/30H10K2101/40H10K2102/351
Inventor 魏定纬丁欢达谢坤山陈志宽
Owner NINGBO LUMILAN NEW MATERIAL CO LTD
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