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Preparation method of white light OLED new material

A new material, white light technology, applied in the fields of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., can solve the problems of chromophore color instability, poor device performance, phase separation, etc. The effect of improved performance, good thermal stability

Inactive Publication Date: 2018-11-13
张玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the operation of the electroluminescent devices prepared by the above two methods, due to the long-term effects of light, electricity and heat, there will be a problem of phase separation, which makes the color of the chromophore unstable and the performance of the device is poor.

Method used

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  • Preparation method of white light OLED new material

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Effect test

Embodiment 1

[0020] A preparation method of a new white light OLED material, the preparation technical scheme is as follows:

[0021] Step 1, the synthesis of intermediates: according to the mass parts, 2.7 parts of 2,7-dibromofluorenone, 2.3 parts of 2-thiophene boronic acid and 50 parts of dimethylformamide were added to the glass reactor, and then At room temperature, stir for 25 minutes until completely dissolved, then add 2.1 parts of sodium carbonate, 0.08 parts of catalyst tetrakis(triphenylphosphine) nickel and 45 parts of dimethylformamide, continue stirring for 60 minutes; then raise the temperature to 100°C , reacted for 13h; completed the reaction, added 400 parts of the system into ice water for precipitation, filtered and washed three times with methanol and ether, and dried in vacuum at 70°C for 8 hours to obtain a red solid; 3.6 parts of the red solid and 0.3 parts of Benzoyl peroxide is dissolved in 100 parts of dimethylformamide, the temperature of the control system is 8...

Embodiment 2

[0029] Step 1. Synthesis of intermediates: According to the parts by mass, 2.4 parts of 2,7-dibromofluorenone, 2.0 parts of 2-thiophene boronic acid and 40 parts of dimethylformamide were added to the glass reactor, Then at room temperature, stir for 20min to completely dissolve, then add 1.8 parts of sodium carbonate, 0.05 parts of catalyst tetrakis (triphenylphosphine) nickel and 40 parts of dimethylformamide, continue to stir for 50min; then heat up to 90 ℃, reacted for 10 h; after the reaction was completed, the system was added to 380 parts of ice water for precipitation, filtered, washed three times with methanol and ether, and dried in vacuum at 60 °C for 5 h to obtain a red solid; 3.2 parts of the red solid and 0.1 parts of The benzoyl peroxide is dissolved in 80 parts of dimethylformamide, the temperature of the control system is 5°C, and then 30 parts of dimethylformamide solution of 3.6 parts of N-bromosuccinimide are dissolved , slowly added dropwise to the system,...

Embodiment 3

[0037] Step 1, the synthesis of intermediates: according to the mass parts, 3.0 parts of 2,7-dibromofluorenone, 2.5 parts of 2-thiophene boronic acid and 60 parts of dimethylformamide were added to the glass reactor, and then At room temperature, stir for 30 minutes until completely dissolved, then add 2.4 parts of sodium carbonate, 0.10 parts of catalyst tetrakis(triphenylphosphine) nickel and 50 parts of dimethylformamide, continue stirring for 70 minutes; then heat up to 110°C , reacted for 15h; completed the reaction, added 420 parts of the system to ice water for precipitation, filtered and washed three times with methanol and ether, and dried in vacuum at 80°C for 10 hours to obtain a red solid; 3.8 parts of the red solid and 0.5 parts of Benzoyl peroxide is dissolved in 120 parts of dimethylformamide, and the temperature of the control system is 10°C, and then 40 parts of dimethylformamide solution of 4.2 parts of N-bromosuccinimide are dissolved, Slowly add dropwise to...

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Abstract

The invention relates to the field of preparation of a new material, in particular to a preparation method of a white light OLED new material. The invention discloses the preparation method of the white light OLED new material. The polymer white light OLED new material is prepared through coupling reaction; the polymer material has good heat stability; and due to the fact that the polymer materialis a monomolecular system, so even if under long-time action of light, electricity and heat, phase separation does not occur, the color of a chromophore is quite stable, and the device property is greatly improved.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a preparation method of a new white light OLED material. Background technique [0002] Polymer electrowhite light devices have attracted intense scientific and industrial attention due to their potential applications in full-color flat panel displays, backlights for liquid crystal displays, and light sources for next-generation solid-state lighting. [0003] CN102127423A discloses a three-color polymer electroluminescence material, which is a polymer having the following general structural formula: where: x=0.0001-0.5; y=0.0001-0.5. Its preparation method is to combine 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-diyl)-9,9-dioctylfluorene, 2, 7-dibromo-9,9-dioctylfluorene, 2,7-dibromo-9-fluorenone, 4,7-di-2'-(5'-bromo)-thiophene-2,1,3- Benzothiadiazole is mixed according to the molar ratio of 100:50~100:0.02~50:0.02~50, and tetrakis(triphenylphosphine)palladium and methyl...

Claims

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Application Information

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IPC IPC(8): C08G83/00C08G61/00C09K11/06H01L51/54
CPCC09K11/06C08G61/00C08G83/00C09K2211/1416H10K85/151
Inventor 张玲
Owner 张玲
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