Method for preparing organo-silicon polymer luminescent material and application of organo-silicon polymer luminescent material to OLED device

A technology of light-emitting materials and polymers, applied in the fields of light-emitting materials, chemical instruments and methods, can solve the problems of poor stability of organic light-emitting materials, limited light-emitting wavelength range, low comprehensive light-emitting efficiency, etc. Yoke system, effect of good rollability

Inactive Publication Date: 2018-11-02
XIAMEN UNIV
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Problems solved by technology

[0010] The present invention aims to solve the problems of poor stability, low overall luminous efficiency, limited luminous wavelength region and difficulty in film formation of organic luminescent materials. By introducing anthracene groups into the side chain of PCS, a kind of fluorescent quantum yield and high luminous intensity is provided. It is an organosilicon polymer blue light-emitting material with excellent effect, good thermal stability and good film-forming properties, and it is applied to the production of OLED devices to realize the preparation of organosilicon polymer light-emitting materials that are more widely used in the field of organic light-emitting Method and its application in OLED devices

Method used

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  • Method for preparing organo-silicon polymer luminescent material and application of organo-silicon polymer luminescent material to OLED device
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  • Method for preparing organo-silicon polymer luminescent material and application of organo-silicon polymer luminescent material to OLED device

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preparation example Construction

[0032] The preparation method embodiment of the organosilicon polymer luminescent material comprises the following steps:

[0033] The organosilicon polymer luminescent material is a PCS luminescent material containing anthracene groups in the side chain, and its general structural formula is as follows:

[0034]

[0035] Dissolve the ground PCS and 9-vinyl anthracene in xylene respectively, and add a catalyst to the xylene solution of 9-vinyl anthracene. After activation, mix the PCS and 9-vinyl anthracene solution into a container In the middle; set the temperature rise program, keep warm under an inert gas atmosphere, and react, and let the whole system cool down to room temperature naturally after the reaction; carry out negative pressure rotary distillation on the mixed solution after the reaction to remove the solvent to obtain a light yellow solid, and then After drying, the organosilicon polymer luminescent material is obtained.

[0036] The catalyst catalyst can b...

Embodiment 1

[0041] Preparation of PCS luminescent material with anthracene group in side chain:

[0042] (1) Weigh 3g of PCS, dissolve it in 30mL of xylene, and place the solution in a three-necked flask to check its airtightness. Then, the synthesis device was evacuated for 3 times with a vacuum pump, and the whole system was placed in an argon atmosphere protection environment.

[0043] (2) Weigh 0.5g of 9-vinylanthracene, dissolve it in 30mL of xylene, and drop into 1mL of H 2 PtCl 6 Catalyst, activation treatment about 30min.

[0044] (3) Slowly drop the above-mentioned 9-vinylanthracene solution into the three-necked flask of the synthesis device through the dropping funnel. Under magnetic stirring, allow the solution to mix thoroughly.

[0045] (4) After the reaction starts, a certain flow rate of argon gas should be maintained. Heating program: from room temperature to 80°C, the heating rate is 5°C / min, and the synthesis time is 2h. After the reaction, the whole system was na...

Embodiment 2

[0051] Fabrication of OLED devices:

[0052] (1) Cleaning of the anode ITO (indium tin oxide) substrate: a) Clean the cut ITO glass with a glass cleaner; b) Ultrasonic clean it with distilled water, acetone, and isopropanone for 10 minutes; c) Clean it with N 2 After drying, it was treated with ultraviolet ozone for 10 minutes.

[0053] (2) Preparation of hole transport layer: a) Spin-coat a layer of polyethylenedioxythiophene-poly(styrenesulfonic acid) (PEDOT:PSS) film on the surface of ITO glass with a thickness of 40nm; b) Quenching at 140°C 20min; c) After cooling to room temperature, spin-coat a layer of poly(9,9-dioctylfluorene-CO-N-(4-butylphenyl)diphenylamine) (TFB) on the film with toluene as solvent , with a thickness of 10nm; d) Quenching at 200°C for 20min.

[0054] (3) Preparation of the light-emitting layer: a) The anthracene-containing organosilicon polymer light-emitting material prepared above and the BCPO host material were co-dissolved in dichloromethane a...

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Abstract

The invention provides a method for preparing an organo-silicon polymer luminescent material and application of the organo-silicon polymer luminescent material to an OLED device, and relates to an organic luminescent material. Powdered PCS and 9-vinyl anthracene which are obtained through grinding are separately dissolved in xylene, and a catalyst is added to the 9-vinyl anthracene xylene solution; after activation, the PCS solution and the 9-vinyl anthracene solution are mixed and placed in a container; a heating program is set, heat preservation is carried out under the protection of an inert gas atmosphere, a reaction is carried out, and the whole system is naturally cooled to room temperature after the reaction ends; the mixed solution after the reaction is subjected to negative-pressure rotary distillation to remove the solvent and obtain a canary yellow solid, and then the solid is dried to obtain the organo-silicon polymer luminescent material. The relative molecular mass of a PCS molecule is increased, the conjugated system is enlarged, the fluorescence emission performance is enhanced, and in combination with the characteristics of PCS which is easy to form a film and is flexible, the application problems of difficult film formation and easy aggregation and crystallization of anthracene can be effectively solved.

Description

technical field [0001] The invention relates to an organic luminescent material, in particular to a preparation method of an organosilicon polymer blue luminescent material and an OLED device application thereof. Background technique [0002] Organic light-emitting diode (Organic Light-Emitting Diode, OLED) is also called organic electroluminescent device, because of its excellent display performance, especially self-illumination, wide viewing angle, simple structure, ultra-thin and portable, fast response speed, energy Due to the advantages of low power consumption and flexible display, it is known as "dream display". OLED display technology has been widely used in mobile phones, personal digital assistants (PDAs), digital cameras, DVD players, car navigation, notebook computers and television displays. [0003] In 1987, Chinese-American professor Deng Qingyun (C.W.Tang) first adopted ultra-thin film technology, using transparent conductive film as the anode, Alq3 as the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/60C09K11/06
CPCC08G77/60C09K11/06C09K2211/1416
Inventor 姚荣迁钟磊卢佳敏刘乐雨廖亮钟跃进金超
Owner XIAMEN UNIV
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