Electron transport materials, preparation method thereof and device comprising electron transport materials

An electron transport material and electron transport technology, applied in the field of organic optoelectronic materials, can solve the problem that carbazole-based light-emitting materials cannot meet the requirements of OLED use, and meet the needs of industrial development, and the synthesis and purification are relatively simple and low-cost. Effect

Active Publication Date: 2015-05-27
SHANGHAI SHINSEE OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a carbazole-imidazole electron transport material with simple preparation method and high luminous efficiency, organic electroluminescent Materials and their preparation methods and applications

Method used

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  • Electron transport materials, preparation method thereof and device comprising electron transport materials
  • Electron transport materials, preparation method thereof and device comprising electron transport materials
  • Electron transport materials, preparation method thereof and device comprising electron transport materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]

[0037]Load 0.3100mol of iodobenzene, 0.2400mol of carbazole, 0.0218mol of o-phenanthroline, 0.0218mol of cuprous iodide, and 0.3600mol of cesium carbonate into a 1000ml three-necked flask, add 300ml of DMF to dissolve, evacuate - pass nitrogen three times, and heat up to 150°C, react overnight, pass the reaction solution through a silica gel funnel, rinse with dichloromethane until no product is dissolved, spin to about 400ml, wash with 500ml water, separate the liquid, take the dichloromethane phase, wash three times with water, spin dry, add 100ml to dissolve , adding 500 ml of ethanol to precipitate a large amount of solid, suction filtration, and vacuum drying at 55 ° C to obtain 0.2096 mol of N-phenyl-9H-carbazole with a yield of 87.63%. Mass spectrum of the product obtained: theoretical 243.30; found 243.20. Elemental analysis: theoretical value C: 88.86; H: 5.39; N: 5.76; test value C: 88.84; H: 5.40; N: 5.77.

[0038] Load 0.1640mol of N-phenyl-9H-carbazol...

Embodiment 2

[0042]

[0043] 0.2600 mol of p-methyl iodobenzene, 0.2400 mol of carbazole, 0.0218 mol of o-phenanthroline, 0.0218 mol of cuprous iodide, and 0.3600 mol of cesium carbonate were put into a 1000 ml three-necked flask, 300 ml of DMF was added to dissolve, and the vacuum was evacuated and passed through nitrogen three times. , the temperature was raised to 151 °C, and the reaction was carried out overnight. Pass the reaction solution through a silica gel funnel, rinse with dichloromethane until no product is dissolved, spin to about 400ml, wash with 500ml of water, separate the liquid, take the dichloromethane phase, and wash with water three times; The solid was precipitated, filtered with suction, and dried under vacuum at 55°C. 0.2088 mol of 9-p-methylphenyl-9H-carbazole was obtained with a yield of 87.00%. Mass spectrum of the product obtained: theoretical 257.33; found 257.30. Elemental analysis: theoretical value C: 88.68; H: 5.88; N: 5.44; test value C: 88.66; H: 5.8...

Embodiment 3

[0048]

[0049] Put 0.288mol of 3,4-dimethyliodobenzene, 0.24mol of carbazole, 0.02mol of o-phenanthroline, 0.02mol of cuprous iodide, and 0.384mol of cesium carbonate into a 1000ml three-necked flask, add 300ml of DMF to dissolve, and vacuumize - Pass nitrogen three times, heat up to 152°C, and react overnight. Pass the reaction solution through a silica gel funnel, rinse with dichloromethane until no product is dissolved; rotate to about 400ml, wash with 500ml water, separate the liquid, take the dichloromethane phase, and wash with water three times; spin dry, add 100ml to dissolve, add 500ml ethanol, there will be a lot of The solid was precipitated, filtered with suction, and dried under vacuum at 55°C. 0.2136 mol of 9-(3,4-dimethylbenzene)-9H-carbazole was obtained with a yield of 89.00%. Mass spectrum of the product obtained: theoretical 271.36; found 271.34. Elemental analysis: theoretical value C: 88.52; H: 6.31; N: 5.16; test value C: 88.50; H: 6.32; N: 5.1...

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Abstract

The invention provides carbazole-imidazole electron transport materials. Based on triphenyl imidazole and carbazole, a kind of classic compounds is formed by connecting triphenyl imidazole and carbazole with benzene of different substituent groups. A preparation method is based on improvement of existing methods. Through repeated verification, the preparation method is simple in synthesis and purification processes and low in cost and can meet the industrial development requirements. A device prepared by using the substances has high light emitting efficiency.

Description

technical field [0001] The invention relates to the field of organic photoelectric materials, in particular to a carbazole-imidazole electron transport material and its preparation and device. Background technique [0002] Organic electroluminescent devices have attracted widespread attention due to their advantages of thin body, large area, full curing, and flexibility. research hotspot. [0003] As early as the 1950s, Bernanose.A et al. started research on organic electroluminescent devices (OLEDs). The material initially studied was an anthracene single wafer. Due to the problem of the large thickness of a single wafer, the required driving voltage is very high. Until 1987, Deng Qingyun (C.W.Tang) and Vanslyke of Eastman Kodak Company in the United States reported the structure as: ITO / Diamine / Alq 3 / Mg:Ag organic small molecule electroluminescence device, the brightness of the device can reach 100cd / m2 at a working voltage of 10 volts 2 , the external quantum effici...

Claims

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Application Information

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IPC IPC(8): C07D403/14C09K11/06H01L51/54
CPCC09K11/06C07D403/14C09K2211/1044C09K2211/1029C09K2211/1007H10K85/654H10K85/6572
Inventor 高春吉王永光李文军毕岩
Owner SHANGHAI SHINSEE OPTOELECTRONICS TECH CO LTD
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