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Triazine compound and light-emitting device

A triazine compound, fused technology, applied in the field of triazine compounds and light-emitting devices, can solve problems such as unfavorable charge balance and carrier transport, hole transport performance and large electron transport performance.

Inactive Publication Date: 2017-06-27
AAC MICROTECH CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In TADF materials based on triazine compounds, most of the electron-donating groups are carbazole groups and diphenylamine groups, and in the molecular structure of triazine compounds, the number of aromatic amine groups contained is usually equal to or more than that of triazine groups. The hole transport performance of the material is greater than the electron transport performance, which is not conducive to charge balance and carrier transport

Method used

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  • Triazine compound and light-emitting device
  • Triazine compound and light-emitting device
  • Triazine compound and light-emitting device

Examples

Experimental program
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preparation example

[0090] 1. Synthesis of Compound C-1

[0091]

[0092] Dissolve 2mmol of the raw material (C-1-1) in 25mL of tetrahydrofuran, add dropwise a butyllithium solution containing 2mmol of butyllithium under nitrogen protection, and stir for 10 minutes, then add the solvent dropwise to Triazine in 25 mL THF solution. After stirring for 10 minutes, the temperature was raised to reflux for 6 hours. 100 mL of water was added to precipitate a solid, and the solid was washed with water and n-hexane in turn. Recrystallization from ethanol gave intermediate (C-1-2). Get intermediate (C-1-2) 1mmol, aromatic boronic acid compound (C-1-3) 1.2mmol, 0.1g tetrakis (triphenylphosphine palladium), 3mL concentration is the sodium carbonate solution of 2mol / L, 4mL toluene and 2mL of ethanol was heated and stirred at 80°C for 8 hours under nitrogen protection. The reaction solution was extracted with dichloromethane, washed with water, dried over anhydrous sodium sulfate, and distilled under re...

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Abstract

The invention relates to a triazine compound. The structural formula of the triazine compound is as shown in formula I, wherein L is substituted or non-substituted C6-C24 arylidene; n is 0 or 1; Py is substituted or non-substituted C3-C24 nitrogen-containing heterocyclic groups or nitrogen-containing heterocyclic condensation groups; Ac1 and Ac2 are substituted or non-substituted C12-C48 nitrogen-containing heterocyclic condensation groups; Ac1 and Ac2 can be identical ort different. The invention further relates to a light-emitting device containing the triazine compound. When two nitrogen-containing heterocyclic condensation groups are connected with a triazine group, certain angles are formed between the nitrogen-containing heterocyclic condensation groups and the triazine group due to steric hindrance, and TADF design is achieved.

Description

technical field [0001] The invention relates to the technical field of organic light-emitting materials, in particular to a triazine compound and a light-emitting device using the triazine compound. Background technique [0002] The application of organic light-emitting diodes (OLEDs) in large-area flat-panel displays and lighting has attracted extensive attention from both industry and academia. As the third-generation organic light-emitting materials developed after organic fluorescent materials and organic phosphorescent materials, thermally activated delayed fluorescence (TADF) generally has a small singlet-triplet energy level difference (ΔE ST ), triplet excitons can be transformed into singlet excitons to emit light through anti-intersystem crossing. This can make full use of the singlet excitons and triplet excitons formed under electrical excitation, and the internal quantum efficiency of the device can reach 100%. At the same time, the structure of the material i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D401/14C07D519/00C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D401/14C07D519/00C09K2211/1007C09K2211/1088C09K2211/1092C09K2211/1059C09K2211/1044C09K2211/1029H10K85/654H10K85/657H10K85/6572H10K50/00H10K2102/00H10K2102/301
Inventor 黄达马腾达谢再锋曹辰辉
Owner AAC MICROTECH CHANGZHOU
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