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Compound and application thereof

A compound and unsubstituted technology, applied in the field of organic electroluminescence, can solve the problems of high transmission barriers, poor luminous efficiency and poor molecular structure stability, and achieve the effect of reducing transmission barriers and improving planarity

Pending Publication Date: 2021-06-18
BEIJING ETERNAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing red-light host materials have high carrier transport barriers, require high voltages, and have poor luminous efficiency and molecular structure stability.

Method used

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  • Compound and application thereof
  • Compound and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0094] Synthesis Example 1: Synthesis of Intermediate E

[0095]

[0096] Add 1,8-dibromonaphthalene (1mol), phenylboronic acid (1mol), potassium carbonate (1.2mol), tetrakis(triphenylphosphine)palladium (0.01mmol), dioxane 1000mol, and water 100mL into the reaction flask , heated to reflux for 6h, the reaction was monitored by thin-layer chromatography (TLC), ethyl acetate and water were added for extraction, and the organic phase was concentrated to obtain Intermediate A.

[0097] Add A (0.7mol) to 1L of tetrahydrofuran (THF) and cool down to -78°C, add n-butyllithium (0.8mol) dropwise, keep warm for 30min, and then add triisopropyl borate (1mol) dropwise. After completion, gradually return to room temperature and react for 3 hours, add water and ethyl acetate for extraction, concentrate the organic phase, wash with methanol and filter to obtain Intermediate B.

[0098] Add B (0.5mol), 2-bromo-6-nitroaniline (0.7mol), potassium carbonate (1.0mol), tetrakis(triphenylphosp...

Synthetic example 2

[0101] Synthesis Example 2: Synthesis of Compound P7

[0102]

[0103] Add E (50mmol), 2-chloro-4-(1-naphthyl)quinazoline (55mmol), cesium carbonate (60mmol), N,N-dimethylformamide (DMF, 150mL) into the reaction flask, The reaction was refluxed for 8 hours. After the reaction was complete, it was lowered to room temperature. The reaction liquid was poured into water and filtered. The filter cake was washed once with ethanol and recrystallized from toluene to obtain compound P7.

Synthetic example 3

[0104] Synthesis Example 3: Synthesis of Compound P15

[0105]

[0106] 2,4 dichloroquinazoline (0.2mol), 4-(pyridin-3-yl)phenylboronic acid (1mol), potassium carbonate (0.35mol), tetrakis(triphenylphosphine)palladium (0.002mmol), dioxygen Add 300 mol of hexacyclic ring and 50 mL of water into the reaction flask, heat to 80°C for 4 hours, monitor the completion of the reaction by TLC, and filter to obtain P15-A after cooling.

[0107] Add E (50mmol), P15-A (55mmol), cesium carbonate (60mmol), DMF (150mL) into the reaction flask, reflux reaction for 8h, after the reaction is complete, cool down to room temperature, pour the reaction solution into water and filter, filter cake ethanol After washing once, toluene was recrystallized to obtain compound P15.

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PUM

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Abstract

The invention relates to a compound and application thereof. The compound has a structure as shown in a formula I. By introducing a carbazole structure of cycloheptatriene, the planarity of molecules is improved, and the transmission barrier of current carriers is reduced, so that an organic electroluminescent device comprising the compound has the advantages of low voltage and high efficiency.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a compound and its application. Background technique [0002] In recent years, optoelectronic devices based on organic materials have become increasingly popular. The inherent flexibility of organic materials makes them very suitable for manufacturing on flexible substrates, and can design and produce beautiful and cool optoelectronic products according to requirements, gaining a strong advantage over inorganic materials. These include organic light-emitting diodes (OLEDs), organic field-effect transistors, organic photovoltaic cells, and organic sensors. Among them, OLED is developing rapidly, and has achieved commercial success in the field of information display. [0003] OLED can provide high-saturation red, green, and blue colors, and the full-color display device made of it does not need an additional backlight source, and has the advantages of bright ...

Claims

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Application Information

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IPC IPC(8): C07D209/94C07D403/04C07D409/14C07D401/14C07D403/10C07D405/14C07D403/14C09K11/06H01L51/50H01L51/54
CPCC07D209/94C07D403/04C07D409/14C07D401/14C07D403/10C07D405/14C07D403/14C09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1044C09K2211/1059C09K2211/1088C09K2211/1092H10K85/615H10K85/6576H10K85/6574H10K85/6572H10K50/11
Inventor 李之洋张辉
Owner BEIJING ETERNAL MATERIAL TECH
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