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Hole transport material and preparation method thereof, organic electroluminescent device

A technology of hole transport materials and electroluminescent devices, which is applied in the fields of electro-solid devices, organic chemistry, electrical components, etc., to achieve the effect of improving hole mobility

Active Publication Date: 2020-07-10
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the heavy metals commonly used are noble metals such as iridium Ir and platinum Pt, and the phosphorescent materials of heavy metal complexes have yet to break through in blue light materials.

Method used

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  • Hole transport material and preparation method thereof, organic electroluminescent device
  • Hole transport material and preparation method thereof, organic electroluminescent device
  • Hole transport material and preparation method thereof, organic electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 provides a preparation method of a hole transport material, comprising the following steps:

[0036] Put the compound containing the fluorenated triphenylamine structure, the nitrogen-containing aromatic compound and the catalyst into the reaction vessel to form the first mixed solution; use argon to pump and vent the reaction vessel, and add the alcohol compound and the first solvent to the reaction vessel to obtain a second mixed solution; heat the second mixed solution to 120°C and react for 24 hours to form a third mixed solution; pour the third mixed solution into the second solvent to form the second mixed solution Four mixed solutions; use dichloromethane to extract the fourth mixed solution three times, combine the organic phase to obtain the target compound solution; use 200-300 mesh silica gel to carry out column chromatography separation and purification on the target compound solution to obtain the empty Cave transport material.

[0037] In Exa...

Embodiment 2

[0042] Embodiment 2 provides a kind of preparation method of hole transport material, comprises the following steps:

[0043]Put the compound containing fluorenotriphenylamine structure, nitrogen-containing aromatic compound and catalyst into the reaction vessel (250mL two-neck flask) to form the first mixed solution; use argon to pump the reaction vessel, add alcohol Put the compound and the first solvent into the reaction vessel to obtain a second mixed solution; heat the second mixed solution to 120°C and react for 24 hours to form a third mixed solution; pour the third mixed solution into A fourth mixed solution is formed in the second solvent; the fourth mixed solution is extracted three times with dichloromethane, and the organic phase is combined to obtain a target compound solution; column chromatography is performed on the target compound solution by using 200-300 mesh silica gel The hole transport material is obtained by separation and purification.

[0044] In Exam...

Embodiment 3

[0049] Embodiment 3 provides a kind of preparation method of hole transport material, comprises the following steps:

[0050] Put the compound containing fluorenotriphenylamine structure, nitrogen-containing aromatic compound and catalyst into the reaction vessel (250mL two-neck flask) to form the first mixed solution; use argon to pump the reaction vessel, add alcohol Put the compound and the first solvent into the reaction vessel to obtain a second mixed solution; heat the second mixed solution to 120°C and react for 24 hours to form a third mixed solution; pour the third mixed solution into A fourth mixed solution is formed in the second solvent; the fourth mixed solution is extracted three times with dichloromethane, and the organic phase is combined to obtain a target compound solution; column chromatography is performed on the target compound solution by using 200-300 mesh silica gel The hole transport material is obtained by separation and purification.

[0051] In Exa...

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PUM

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Abstract

The invention provides a hole transport material and its preparation method, and an organic electroluminescent device. On the basis of the structure of fluorenated triphenylamine, a series of suitable highest occupied molecular orbital (HOMO) / lowest occupied molecular orbital ( LUMO) hole transport material, thereby improving the hole mobility of the hole transport material.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a hole transport material, a preparation method thereof, and an organic electroluminescent device. Background technique [0002] Organic light-emitting diodes (organic light-emitting diodes, OLED) do not need a backlight source for active light emission, high luminous efficiency, large viewing angle, fast response speed, wide temperature range, relatively simple production and processing technology, and low driving voltage , low energy consumption, lighter and thinner, flexible display and other advantages, as well as huge application prospects, have attracted the attention of many researchers. In OLEDs, the dominant light-emitting guest material is crucial. The luminescent guest materials used in early OLEDs are fluorescent materials. Since the ratio of singlet and triplet excitons in OLEDs is 1:3, the theoretical internal quantum efficiency (IQE) of OLE...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D403/04C07D241/38C07D401/04H01L51/50H01L51/54
CPCC07D403/04C07D241/38C07D401/04H10K85/00H10K50/15
Inventor 罗佳佳
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD