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Organic compound based on carbazole fused ring structure and application of organic compound in OLED

A technology of organic compounds and carbazoles, applied in the field of organic compounds containing carbazolo ring structures, can solve the problems of low refractive index, large extinction coefficient and high material evaporation temperature

Active Publication Date: 2021-02-02
JIANGSU SUNERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The evaporation temperature of the material is high, and the decomposition temperature of the material is lower than or close to the evaporation temperature of the material, which leads to serious decomposition of the CPL material after long-term evaporation
[0007] 2. The refractive index of the material in the visible light field is low, resulting in low light extraction efficiency. After being applied to OLED devices, the luminous efficiency of the device is limited.
[0008] 3. The material has a large extinction coefficient in the visible light field, which causes the light in the OLED light-emitting layer to be absorbed by the CPL material. After being applied to an OLED device, the luminous efficiency of the device is limited.

Method used

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  • Organic compound based on carbazole fused ring structure and application of organic compound in OLED
  • Organic compound based on carbazole fused ring structure and application of organic compound in OLED
  • Organic compound based on carbazole fused ring structure and application of organic compound in OLED

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Experimental program
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Effect test

Embodiment 1

[0086] Embodiment 1: the synthesis of compound 1:

[0087]

[0088] In a 250ml three-neck flask, under the protection of nitrogen, add 0.012mol raw material A1, 0.01mol intermediate B1, dissolve with a mixed solvent (90ml toluene, 45ml ethanol), and then add 0.03mol Na 2 CO 3 aqueous solution (2M), stirred under nitrogen for 1 hour, then added 0.0001mol Pd(PPh 3 ) 4 , heated to reflux for 15 hours, sampling and spotting the plate, the reaction was complete; naturally cooled to room temperature, filtered, the filtrate was rotary evaporated to no fraction, passed through a neutral silica gel column to obtain the target product, the HPLC purity was 99.75%, and the yield was 76.5%. Elemental analysis structure (molecular formula C 43 h 26 N 2 o 2 ) Theoretical value: C, 85.69; H, 4.35; N, 4.65; O, 5.31; Tested value: C, 85.70; H, 4.35; N, 4.65. MS(m / z)(M + ): theoretical value: 602.199, measured value: 602.11.

[0089] The target compound was prepared by the above synt...

Embodiment 11

[0094] Embodiment 11: the synthesis of compound 167

[0095]

[0096] In a 250ml three-neck flask, under the protection of nitrogen, add 0.022mol raw material C1, 0.01mol raw material D1, dissolve with a mixed solvent (90ml toluene, 45ml ethanol), and then add 0.03mol Na 2 CO 3 aqueous solution (2M), stirred under nitrogen for 1 hour, then added 0.0001mol Pd(PPh 3 ) 4 , heated to reflux for 15 hours, sampling and spotting the plate, and the reaction was complete; naturally cooled to room temperature, filtered, and the filtrate was rotary evaporated to no fraction, passed through a neutral silica gel column to obtain the target product, the HPLC purity was 99.83%, and the yield was 74.0%. Elemental analysis structure (molecular formula C 44 h 26 N 4 o 2 ) Theoretical value: C, 82.23; H, 4.08; N, 8.72; O, 4.98; Test value: C, 82.24; H, 4.08; N, 8.72. MS(m / z)(M + ): theoretical value: 642.206, measured value: 642.18.

[0097] The target compound was prepared by the ab...

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Abstract

The invention discloses an organic compound based on a carbazole fused ring structure and an application of the organic compound in an OLED device. The structure of the compound simultaneously contains a benzo five-membered ring and a carbazole fused ring structure, and the compound has high glass transition temperature and thermal stability. The evaporation temperature of the material is low, andthe decomposition temperature of the material is higher than the evaporation temperature of the material. The material has a low extinction coefficient and a high refractive index in the field of visible light, and can effectively improve the light extraction efficiency of an OLED device after being applied to the OLED device as a covering layer (CPL), thereby improving the light emitting efficiency of the device and reducing the power consumption of the device.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to an organic compound containing a carbazolo ring structure and its application in OLEDs. Background technique [0002] Currently, OLED display technology has been applied in smart phones, tablet computers and other fields, and will further expand to large-size applications such as TVs. However, due to the huge gap between the external quantum efficiency and internal quantum efficiency of OLEDs, the development of OLEDs is greatly restricted. At present, an important method to improve the external quantum efficiency of OLEDs is to form structures such as wrinkles, photonic crystals, microlens arrays (MLA) and add surface covering layers on the light-emitting surface of the substrate. The first two structures will affect the angular distribution of the radiation spectrum of the OLED, and the third structure has a complex manufacturing process, but the use of a surface coveri...

Claims

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Application Information

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IPC IPC(8): C07D487/04C07D491/048C07D495/04H01L51/54
CPCC07D491/048C07D487/04C07D495/04H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K85/657Y02E10/549
Inventor 吴秀芹陈海峰叶中华张兆超
Owner JIANGSU SUNERA TECH CO LTD
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