Symmetrical sulfone-containing wet-processing blue organic electroluminescent material, preparation method and application thereof

A luminescent and symmetrical technology, applied in the direction of luminescent materials, preparation of organic compounds, organic chemistry, etc., can solve the problems of low efficiency, color purity difference of blue light materials, etc., to reduce costs, improve stability, and facilitate wet methods Processing effect

Active Publication Date: 2019-09-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the traditional OLED red, blue and green primary color materials, red and green light-emitting materials are relatively mature, with high material efficiency and long life, which can fully meet the needs of commercial display and lighting technology, but blue light materials are still limited by color purity. Poor, low efficiency and other problems

Method used

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  • Symmetrical sulfone-containing wet-processing blue organic electroluminescent material, preparation method and application thereof
  • Symmetrical sulfone-containing wet-processing blue organic electroluminescent material, preparation method and application thereof
  • Symmetrical sulfone-containing wet-processing blue organic electroluminescent material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In this embodiment, the structural formula of the sulfone-containing wet-processing organic electroluminescent blue light-emitting material is as follows:

[0049]

[0050] The sulfone-containing organic electroluminescent blue light-emitting material utilizes the easy delocalization of electrons of fluorene, and the rigid planarity is easy to modify. Through two C 8 The alkyl chain acts as a substituent of fluorene to increase the solubility of the whole material and facilitate wet processing; at the same time, two special Cs are introduced into the central carbazole 8 The alkyl chains, which increase the solubility of the overall material and make the overall material easy to wet process, constitute the two interlayer donor moieties.

[0051] The synthetic route of the sulfone-containing wet-processing organic electroluminescent blue luminescent material is shown in the following synthetic route, specifically as follows:

[0052]

[0053]

[0054]

[0055...

Embodiment 2

[0068] In this embodiment, the structural formula of the sulfone-containing wet-processing organic electroluminescent blue light-emitting material is as follows:

[0069]

[0070] The sulfone-containing wet-processing organic electroluminescent blue light-emitting material utilizes the easy delocalization of electrons of fluorene, and the rigidity and planarity are easy to modify. 8 The alkyl chain acts as a substituent of fluorene to increase the solubility of the whole material and facilitate wet processing; at the same time, two special Cs are introduced into the central carbazole 8 The alkyl chains, which increase the solubility of the overall material and make the overall material easy to wet process, constitute the two interlayer donor moieties.

[0071] The synthesis route of the sulfone-containing wet-processing organic electroluminescent blue light-emitting material is shown in the above synthesis route, specifically as follows:

[0072] Step 1: Synthesis (2a)

...

Embodiment 3

[0083] In this embodiment, the structural formula of the sulfone-containing wet-processing organic electroluminescent blue light-emitting material is as follows:

[0084]

[0085] The sulfone-containing wet-processing organic electroluminescent blue light-emitting material utilizes the easy delocalization of electrons of fluorene, and the rigidity and planarity are easy to modify. 8 The alkyl chain acts as a substituent of fluorene to increase the solubility of the whole material and facilitate wet processing; at the same time, two special Cs are introduced into the central carbazole 8 The alkyl chains, which increase the solubility of the overall material and make the overall material easy to wet process, constitute the two interlayer donor moieties.

[0086] The synthesis route of the sulfone-containing wet-processing organic electroluminescent blue light-emitting material is shown in the above synthesis route, specifically as follows:

[0087] Step 1: Synthesis (1c)

...

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Abstract

The invention provides a series of symmetrical sulfone-containing wet-processing blue organic electroluminescence materials, which contain sulfones, substituted carbazoles, fluorenes, triphenylamines and their derivatives. The balance of transmission; increase the solubility of molecules by increasing the branching of alkyl chains, which is beneficial to wet processing and reduces production costs. This series of electroluminescent materials involves the field of electroluminescence, which can emit blue and dark blue fluorescence and can be applied in the fields of OLED lighting and OLED display. It has a strong electron acceptor and a weak electron donor, a large conjugated structure, and a twisted and partially rigid planar structure, which is beneficial to contain the intermolecular force, improve the stability of the device, and obtain high-level fluorescent quantum efficiency and blue light materials.

Description

technical field [0001] The invention relates to the field of synthesis of organic electroluminescent materials and devices, in particular to a symmetrical sulfone-containing wet-processing blue organic electroluminescent material, a preparation method and application thereof. The invention relates to the application of the organic electroluminescent device in illumination and OLED display. Background technique [0002] Organic electroluminescent materials and their devices (OLED) have the advantages of low driving voltage, active light emission, easy preparation, high efficiency and energy saving, large-area and flexible display, and wide color gamut. They are ideal display and lighting technologies for a new generation. Wide application prospects. It is of great significance to develop new organic electroluminescent materials and devices with good stability, high luminous efficiency, high luminous purity and excellent performance. [0003] At present, OLEDs, especially sm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D209/86C07C317/32C07C315/04C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07C317/32C07D209/86C09K2211/1022C09K2211/1029H10K85/631H10K85/626H10K85/6572H10K50/11
Inventor 葛子义张磊杨荣娟雷涛彭瑞祥
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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