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A kind of organic electroluminescent polymer material containing tetraphenylethylene and its preparation and application

A technology of tetraphenylethylene and polymer materials, applied in luminescent materials, circuits, electrical components, etc., to achieve high yield, stable structure, and good photoelectric performance

Active Publication Date: 2022-04-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on PLEDs prepared based on AIE polymer materials, and there is still a lot of room for improvement in device performance. It is expected to solve the problem of high efficiency roll-off by preparing PLEDs based on AIE polymer materials.

Method used

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  • A kind of organic electroluminescent polymer material containing tetraphenylethylene and its preparation and application
  • A kind of organic electroluminescent polymer material containing tetraphenylethylene and its preparation and application
  • A kind of organic electroluminescent polymer material containing tetraphenylethylene and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of the organic electroluminescent polymer material (pTPE-TPA-Cz) containing tetraphenylethylene in this embodiment:

[0038]

[0039] The reaction equation is as follows:

[0040]

[0041] The synthesis method of monomer M1 can be prepared according to the published method of the literature (J.Mater.Chem.C., 2014,2,4320-4327); the synthesis method of M2 can be prepared according to the literature (Angew.Chem.Int.Ed., 2018 , 130,173-177) prepared by the disclosed method.

[0042] Add 164.4mg (0.25mmol) monomer M1, 125.8mg (0.25mmol) monomer M2 and 5.8mg (0.005mmol) catalyst Pd (PPh 3 ) 4 , injected 5mL of toluene solvent and 1mL of tetraethylammonium hydroxide aqueous solution (25wt / wt%) with a syringe, after reacting at 85°C for 48 hours, added 305mg (2.5mmol) phenylboronic acid, and continued to react at 85°C for 12 After 1 hour, 785 mg (5 mmol) of bromobenzene was added, and the reaction was still carried out at 85° C. for 12 hours. After the rea...

Embodiment 2

[0046] Preparation of the organic electroluminescent polymer material (pTPE-TPA-Flu) containing tetraphenylethylene in this embodiment:

[0047]

[0048] The reaction equation is as follows:

[0049]

[0050] The synthesis method of monomer M1 can be prepared according to the published method of the literature (J.Mater.Chem.C., 2014,2,4320-4327); the synthesis method of M3 can be prepared according to the literature (Angew.Chem.Int.Ed., 2018 , 130,173-177) prepared by the disclosed method.

[0051] Add 164.4mg (0.25mmol) monomer M1, 160.6mg (0.25mmol) monomer M3 and 5.8mg (0.005mmol) catalyst Pd (PPh 3 ) 4 , injected 5mL of toluene solvent and 1mL of tetraethylammonium hydroxide aqueous solution (25wt / wt%) with a syringe, after reacting at 85°C for 48 hours, added 305mg (2.5mmol) phenylboronic acid, and continued to react at 85°C for 12 After 1 hour, 785 mg (5 mmol) of bromobenzene was added, and the reaction was still carried out at 85° C. for 12 hours. After the re...

Embodiment 3

[0055] PLEDs device performance of tetraphenylethylene-containing organic electroluminescent polymer material (pTPE-TPA-Cz):

[0056] Using the tetraphenylethylene-containing organic electroluminescent polymer material pTPE-TPA-Cz (solid-state fluorescence quantum yield = 63.3%) prepared in Example 1 as a light-emitting material to prepare doped devices and non-doped devices, and The device performance was tested and characterized, and the results are shown in Figure 1~2 .

[0057] Device structure: ITO / PEDOT:PSS(50nm) / EMLs(5,10,30wt%):CBP(55nm) / TmPyPB(40nm) / LiF(1nm) / Al (doped structure);

[0058] ITO / PEDOT:PSS(50nm) / EMLs(60nm) / TmPyPB(40nm) / LiF(1nm) / Al(non-doped structure);

[0059] figure 1 J-V-L curves of doped and non-doped PLEDs devices prepared using pTPE-TPA-Cz of Example 1. It can be seen from the figure that the pTPE-TPA-Cz based doped and undoped devices have higher maximum brightness and low start-up voltage, which are 6390cd / m 2 , 3.1V and 2866cd / m 2 , 3.2V. ...

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Abstract

The invention belongs to the field of organic electroluminescent materials, and discloses an organic electroluminescent polymer material containing tetraphenylethylene, as well as its preparation and application. The organic electroluminescence polymer material containing tetraphenylethylene has the structure shown in the following formula I, wherein, Ar 1 and Ar 2 are the same or different aromatic ring derivative groups, and n is an integer of 2-200. The tetraphenylethylene-containing organic electroluminescent polymer material of the present invention can be obtained through Suzuki-Miyaura coupling reaction. The invention adjusts the electron or hole transport properties of tetraphenylethylene derivatives by connecting different modification groups on tetraphenylethylene, and can improve the solubility of polymers, so that it can be prepared by solution processing to obtain good photoelectric properties The polymer organic electroluminescence device with simple structure and low cost has broad application prospects in the field of organic electroluminescence.

Description

technical field [0001] The invention belongs to the field of organic electroluminescent materials, and in particular relates to an organic electroluminescent polymer material containing tetraphenylethylene and its preparation and application. Background technique [0002] Organic electroluminescent devices, also known as organic light-emitting diodes (OLEDs), are a class of devices based on organic semiconductor materials that convert electrical energy into light energy. Since the pioneering work of Dr. Deng Qingyun in 1987, OLEDs have made great progress in more than 30 years, and have shown broad application prospects in flat panel display and solid-state lighting. In recent years, the application trend of OLEDs has gradually shifted to the fields of large-screen display and flexible display. Solution processing has attracted much attention due to its advantages of low cost and easy processing in these fields. In order to meet the material requirements of solution process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12C09K11/06H01L51/50H01L51/54
CPCC08G61/124C09K11/06C08G2261/124C08G2261/3162C08G2261/3241C08G2261/411C09K2211/1425C09K2211/1466C09K2211/1433C09K2211/1416H10K85/151
Inventor 唐本忠顾家宝秦安军
Owner SOUTH CHINA UNIV OF TECH
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