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Triphenylene derivate and organic electroluminescence device

A technology for electroluminescent devices and derivatives, which is applied in the fields of electro-solid devices, electrical components, light-emitting materials, etc., can solve the problems of short lifespan, poor thermal stability, and reduced material usage of organic light-emitting devices.

Inactive Publication Date: 2018-08-24
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal stability of such materials is poor, resulting in a short lifetime of organic light-emitting devices using phosphorescent materials, thus reducing the use of such materials

Method used

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  • Triphenylene derivate and organic electroluminescence device
  • Triphenylene derivate and organic electroluminescence device
  • Triphenylene derivate and organic electroluminescence device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Preparation of Compound 1

[0055]

[0056] Preparation of Intermediates 1-3

[0057] Under the protection of nitrogen, 1-1 (38.61g, 100.00mmol), 1-2 (12.20g, 100.00mmol), potassium carbonate (1.24g, 9.00mmol), and toluene 200mL were added to a 2L reactor and stirred. The temperature in the reactor was raised to 70°C, and Pd(PPh 3 ) 4 (1.04g, 0.90mmol), stirred with 100mL distilled water, stirred and refluxed for 11h, fully reacted. After adding 70mL of distilled water to terminate the reaction, filter under reduced pressure, wash the solid with distilled water, and then use acetone, toluene, THF to recrystallize, after the solid is obtained, sublimate, and toluene recrystallize to obtain 30.83g of intermediate 1-3, with a yield of 80.44 %.

[0058] Preparation of Intermediates 1-5

[0059] To 1-3 (30.83 g, 80.44 mmol) and a solution of 1-4 (13.69 g, 80.44 mmol) in degassed toluene (500 mL), and the mixture was heated at reflux for 2 hours. The reaction mixtur...

Embodiment 2

[0063] Preparation of Compound 8

[0064]

[0065] Compound 8 was obtained by replacing 1-2 in Example 1 with 8-2 ​​as shown above. Mass Spectrum m / z: 560.66 (calculated: 560.67). Theoretical element content (%)C 41 h 24 N 2 O: C, 87.83; H, 4.31; N, 5.00; O, 2.85 Measured element content (%): C, 87.82; H, 4.32; N, 5.01; O, 2.86. It was confirmed above that the obtained product was the target product 8.

Embodiment 3

[0067] Preparation of compound 14

[0068]

[0069] Compound 14 was obtained by replacing 1-2 in Example 1 with 14-2 as shown above. Mass Spectrum m / z: 710.88 (calculated: 710.89). Theoretical element content (%)C 54 h 34 N 2 : C, 91.24; H, 4.82; N, 3.94 Measured element content (%): C, 91.25; H, 4.81; N, 3.95. It was confirmed above that the obtained product was the target product 14.

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Abstract

The invention provides a triphenylene derivate and an organic electroluminescence device, and belongs to the technical field of organic electroluminescence materials. The compound has the structure asshown in formula (I). According to the triphenylene derivate, triphenylene and benzimidazole are condensed, so that the obtained material is high in glass transition temperature and is capable of avoiding crystalizing; the synthesizing method is simple, and easy to operate; the organic electroluminescence device prepared through the triphenylene derivate is high in luminescence efficiency and lowin driving voltage.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a triphenylene derivative and an organic electroluminescence device thereof. Background technique [0002] With the progress of the information industry, traditional displays can no longer meet people's requirements, such as: cathode ray tube (CRT) displays have large volume and high driving voltage; liquid crystal displays (liquid crystal display, LCD) have low brightness and narrow viewing angles. , The operating temperature range is small; the plasma display panel (PDP) is expensive, the resolution is not high, and the power consumption is large. [0003] Organic light-emitting diodes (organic light-emitting diodes, OLEDs) as a new display technology has unparalleled advantages in various performances of existing display technologies, such as full solid state, self-luminous, high brightness, high resolution , wide viewing angle (above 170 degrees), fas...

Claims

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Application Information

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IPC IPC(8): C07D471/04C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D471/04C09K2211/1044C09K2211/1059C09K2211/1011C09K2211/1007C09K2211/1029C09K2211/1092C09K2211/1088H10K85/615H10K85/622H10K85/626H10K85/654H10K85/6572H10K85/6574H10K85/6576H10K50/00
Inventor 张弘蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
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