Unlock instant, AI-driven research and patent intelligence for your innovation.

A compound with a dibenzo five-membered heterocycle as the core and its application

A five-membered heterocycle and compound technology, applied in the field of semiconductors, can solve the problems of inability to balance electron transport and hole transport in the light-emitting layer, device efficiency and lifespan to be improved, and poor device stability, so as to improve the utilization rate of excitons and improve The effect of device efficiency and steric hindrance

Active Publication Date: 2022-04-29
JIANGSU SUNERA TECH CO LTD
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The internal electron transport and hole transport of the light-emitting layer material itself need to reach a proper balance to effectively prevent light emission at the interface. If the hole-type material and the electron-type material in the double host are not well matched, the device will be at the interface recombination, resulting in poor stability and short lifetime of the whole device
[0008] The double-host matching method in the prior art cannot achieve a proper balance between electron transport and hole transport in the light-emitting layer, and the efficiency and lifetime of the device still need to be improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A compound with a dibenzo five-membered heterocycle as the core and its application
  • A compound with a dibenzo five-membered heterocycle as the core and its application
  • A compound with a dibenzo five-membered heterocycle as the core and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Embodiment 1. Preparation of compound 1:

[0090]

[0091] (1) In a three-necked flask, under the protection of nitrogen, weigh 0.01mol of raw material A-1 and dissolve it in tetrahydrofuran, cool to -78°C, and then add 8ml of 1.6mol / L n-butyllithium tetrahydrofuran solution to the reaction system , after reacting for 3 hours at -78°C, add 0.013mol triisopropyl borate, react for 2h, then raise the reaction system to 0°C, add 10ml 2mol / L hydrochloric acid solution, stir for 3h, the reaction is complete, add ether to extract, the extract Add anhydrous magnesium sulfate to dry, spin evaporate, and recrystallize with ethanol solvent to obtain intermediate I-1;

[0092] (2) In the three-necked flask, under the protection of nitrogen, add 0.01mol intermediate I-1, 0.012mol raw material B-1, dissolve with mixed solvent (90ml toluene, 45ml ethanol), and then add 1×10 -4 mol Pd(PPh 3 ) 4 , 0.03molK 2 CO 3 Aqueous solution (2M), heating and reflux reaction for 15 hours, s...

Embodiment 4

[0094] Example 4. Preparation of compound 33:

[0095]

[0096] (1) In a three-necked flask, under the protection of nitrogen, weigh 0.01mol of raw material A-2 and dissolve it in tetrahydrofuran, cool to -78°C, and then add 8ml of 1.6mol / L n-butyllithium tetrahydrofuran solution to the reaction system , after reacting for 3 hours at -78°C, add 0.013mol triisopropyl borate, react for 2h, then raise the reaction system to 0°C, add 10ml 2mol / L hydrochloric acid solution, stir for 3h, the reaction is complete, add ether to extract, the extract Add anhydrous magnesium sulfate to dry, spin evaporate, and recrystallize with ethanol solvent to obtain intermediate I-2;

[0097] (2) In the three-neck flask, under the protection of nitrogen, add 0.01mol intermediate I-2, 0.012mol raw material B-1, dissolve with mixed solvent (90ml toluene, 45ml ethanol), and then add 1×10 -4 mol Pd(PPh 3 ) 4 , 0.03molK 2 CO 3 Aqueous solution (2M), heated and refluxed for 15 hours, sampling plat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a compound with a dibenzo five-membered heterocycle as the core and an application thereof, belonging to the technical field of semiconductors. The structure of the compound provided by the present invention is shown in general formula (1) or general formula (2); The compound of the present invention contains a dibenzo five-membered heterocyclic core structure, has suitable HOMO and LUMO energy levels, and is relatively high The triplet energy level (T1) and the lower dipole moment. After the compound of the invention is applied to an OLED device, the luminous efficiency and service life of the device can be effectively improved.

Description

technical field [0001] The invention relates to a compound with a dibenzo five-membered heterocycle as the core and an application thereof, belonging to the technical field of semiconductors. Background technique [0002] When an organic electroluminescent device includes an anode, a cathode, and an organic functional layer arranged between the anode and the cathode, the organic functional layer is a general term for all layers between the cathode and the anode. The organic functional layer comprises an emitting layer, there may be a hole-transporting region between the anode and the emitting layer, and there may be an electron-transporting region between the emitting layer and the cathode. Holes from the anode can migrate to the light emitting layer through the hole transport region, and electrons from the cathode can migrate to the light emitting layer through the electron transport region. Carriers (holes and electrons) recombine in the light-emitting layer to generate e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07D405/14C07D409/14C07D209/86C07D401/14C07D403/14C07D491/048C07D519/00C07D487/04C07D495/04C09K11/06H01L51/50H01L51/54
CPCC07D405/14C07D409/14C07D209/86C07D401/14C07D403/14C07D491/048C07D519/00C07D487/04C07D495/04C09K11/06C09K2211/1029C09K2211/1088C09K2211/1011C09K2211/1007C09K2211/1044C09K2211/1033C09K2211/1037C09K2211/1092H10K85/622H10K85/615H10K85/654H10K85/657H10K85/6572H10K85/6574H10K85/6576H10K50/11
Inventor 陈海峰殷梦轩李崇崔明
Owner JIANGSU SUNERA TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com