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Triazine compound and luminescent device

A technology of triazine compounds and compounds, which is applied in the field of triazine compounds and light-emitting devices, can solve the problems of unfavorable charge balance, carrier transport, and large hole transport performance, and achieve low triplet and singlet energy level difference, Effect of improving luminous efficiency and prolonging device life

Inactive Publication Date: 2017-06-23
AAC TECH NANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in related technologies, the number of carbazole groups or aromatic amine groups in the molecular structure of publicly reported compounds is equal to or more than that of triazine groups, so that the hole transport performance of the material is still 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 luminescent device
  • Triazine compound and luminescent device
  • Triazine compound and luminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] Synthesis of compound TA-1-1

[0122]

[0123] Dissolve 2mmol of the raw material (S1-2) 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 contain 1mmol of the raw material (S1-1) In 25mL tetrahydrofuran solution. After stirring for 10 minutes, the temperature was raised to reflux for 6 hours. A solid was precipitated by adding 100 mL of water, and the solid was washed with water and n-hexane in turn. Recrystallization from ethanol yielded intermediate (S1-3). Take 1mmol of intermediate (S1-3), 1.2mmol of aromatic boronic acid compound (S1-4), 0.1g of tetrakis(triphenylphosphine palladium), 3mL of 2mol / L sodium carbonate solution, 4mL of toluene and 2mL of ethanol, nitrogen Heat and stir at 80°C for 8 hours under protective conditions. The reaction solution was extracted with dichloromethane, washed with water, dried with anhydrous sodium...

Embodiment 2

[0125] Synthesis of compound TA-1-2

[0126] The same operation method as in Synthesis Example 1 was adopted except that the aromatic boronic acid compound (S1-4) was replaced with (S2-4) to obtain compound TA-1-2. The detection yield is 36%, the product mass spectrum (m / e): 640.1, ΔE ST =0.29eV.

[0127]

Embodiment 3

[0129] Synthesis of compound TA-1-3

[0130] The same operation method as in Synthesis Example 1 was adopted except that the aromatic boronic acid compound (S1-4) was replaced with (S3-4) to obtain the target compound TA-1-3. The detection yield is 39%, the product mass spectrum (m / e): 640.2, ΔE ST = 0.28eV.

[0131]

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Abstract

The invention discloses triazine compound. As an aromatic amine radical group with hole transport capacity and a triazine and pyridine radical group with electron transport capacity are introduced into the triazine compound at the same time, the triazine compound can be used to balance carrier transport, further reduce driving voltage, improve luminous efficiency and prolongs the service life of a luminescent device. The invention further provides the luminescent device using the triazine compound.

Description

[0001] 【Technical Field】 [0002] 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. [0003] 【Background technique】 [0004] The application of organic light-emitting diodes (OLEDs) in large-area flat panel displays and lighting has aroused widespread concern in the industry and academia. However, traditional organic fluorescent materials can only emit light using 25% singlet excitons formed by electrical excitation, and the internal quantum efficiency of the device is low (up to 25%). Although the phosphorescent material enhances the intersystem crossing due to the strong spin-orbit coupling of the atom center, it can effectively use the singlet excitons and triplet excitons formed by electric excitation to emit light, so that the internal quantum efficiency of the device reaches 100%. However, phosphorescent materials are expensive, have poor material stabi...

Claims

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Application Information

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IPC IPC(8): C07D401/14C07D401/10C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D401/10C07D401/14C09K2211/1059C09K2211/1007C09K2211/1011C09K2211/1022C09K2211/1014C09K2211/1029H10K85/624H10K85/636H10K85/615H10K85/631H10K85/654H10K85/6572H10K50/00
Inventor 黄达
Owner AAC TECH NANJING
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