Organic micro-molecular electron transport material and preparation thereof, and n-doped electron transport layer and application thereof

A technology of electron transport materials and electron transport layers, which is applied in the direction of luminescent materials, organic chemistry, circuits, etc., can solve problems such as annihilation and affecting stability, and achieve good thermal stability, improved stability, and good film shape stability Effect

Active Publication Date: 2018-08-17
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] So far, a large number of organic molecular electron transport materials (~10 –4 –10 –3 cm 2 ·V -1 ·s -1 ), but there are challenges in the synthesis and purification of these materials (H. Fujimoto et al., Influence of material impurities in the hole-blocking layer on the lifetime of organi

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  • Organic micro-molecular electron transport material and preparation thereof, and n-doped electron transport layer and application thereof
  • Organic micro-molecular electron transport material and preparation thereof, and n-doped electron transport layer and application thereof
  • Organic micro-molecular electron transport material and preparation thereof, and n-doped electron transport layer and application thereof

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Embodiment 1

[0055] The structural formula of the small organic molecule electron transport material of the present embodiment is as follows:

[0056]

[0057] The preparation method of the organic small molecule electron transport material TRZ-m-Phen of the present embodiment comprises the following steps:

[0058] Step 1: Preparation of 2-(3-bromophenyl)-4,6-diphenyl-1,3,5-triazine (1), the reaction equation is as follows:

[0059]

[0060] The compound 2-chloro-4,6-diphenyl-1,3,5-triazine (5.35g, 20mmol) and 3-bromo-phenylboronic acid (4.01g, 20mmol) were dissolved in toluene (100ml), and ethanol was added (20ml) and potassium carbonate aqueous solution (2M, 20ml), in N 2 Under atmosphere, tetrakis(triphenylphosphine)palladium (345mg, 0.3mmol) was added and stirred at 90°C for 12 hours; after the reaction was completed, distilled water was added to the reaction mixture to separate the toluene layer, and the aqueous layer was extracted with dichloromethane. The extracted organic ...

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Abstract

The invention belongs to the technical field of electron transport materials and discloses an organic micro-molecular electron transport material and preparation thereof, and an n-doped electron transport layer and application thereof. The organic micro-molecular electron transport material has a structure shown as the formula I. The preparation method of the organic micro-molecular electron transport material comprises (1) subjecting 2-chloro-4, 6-diphenyl-1, 3, 5-triazine and 3-bromo-phenylboronic acid to coupling reaction, and then performing subsequent processing to obtain a bromine-containing intermediate; (2) subjecting the bromine-containing intermediate and bis-(pinacolato)-diboron to Suzuki reaction and then performing subsequent processing to obtain a borate intermediate; (3) subjecting the borate intermediate and 3-bromo-1, 10-phenanthroline to coupling reaction and performing subsequent processing to obtain the organic micro-molecular electron transport material. The organic micro-molecular electron transport material is simple in structure and high in thermostability and topographic stability; when n-doped, the organic micro-molecular electron transport material can beprepared into the n-doped electron transport layer, which achieves high luminous efficiency and stability when applied to organic electroluminescence devices.

Description

technical field [0001] The invention belongs to the technical field of electron transport materials, and relates to an organic small molecule electron transport material with a simple structure and a preparation method thereof, an n-doped electron transport layer and its application in photoelectric devices such as high-efficiency and high-stability organic light-emitting diodes . Background technique [0002] Electron transport materials are crucial for organic light-emitting diodes (OLEDs). In OLED devices, the introduction of the electron transport layer prevents the cathode from directly contacting the light-emitting layer, thereby avoiding the resulting quenching of light emission. [0003] In order to meet the application requirements, organic molecular electron transport materials are usually required to have excellent thermal stability, film formation and film morphology stability, deep LUMO energy level and good electron mobility. A high glass transition temperatu...

Claims

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Application Information

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IPC IPC(8): C07D471/04C09K11/06H01L51/54
CPCC09K11/06C07D471/04C09K2211/1059H10K85/654H10K85/6572Y02E10/549
Inventor 朱旭辉金广彭俊彪曹镛
Owner SOUTH CHINA UNIV OF TECH
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