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Electroluminescent polymer and preparation method and application thereof

A luminescence and polymer technology, applied in circuits, electrical components, electrical solid devices, etc., can solve the problems of polymers that have not been clearly disclosed, and achieve excellent thermal stability, high-efficiency and stable performance of light-emitting devices, and good planarity Effect

Pending Publication Date: 2019-12-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the polymers claimed in the present invention are not explicitly disclosed in the prior art

Method used

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  • Electroluminescent polymer and preparation method and application thereof
  • Electroluminescent polymer and preparation method and application thereof
  • Electroluminescent polymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0058] 1. Preparation of polymerized monomers

[0059] Preparation of 1-bromo-4-phenylnaphthalene

[0060] Under an argon atmosphere, into a 500mL three-necked flask, add 1,4-dibromonaphthalene (9.68g, 34.1mmol), phenylboronic acid ester (4.63g, 22.3mmol), catalyst tetrakistriphenylphosphine palladium (0.52g , 0.45mmol) and 180mL tetrahydrofuran, stir and heat, when the temperature is stabilized at 80°C, add 50wt% K 2 CO 3 (24.6g, 0.18mol) aqueous solution 24.6mL, reacted for 12h. After the reaction solution was concentrated, it was purified by silica gel column chromatography, using a mixed solvent of petroleum ether and dichloromethane (8 / 1, v / v) as eluent, to obtain a light yellow solid with a yield of 72%. 1 H NMR, 13 CNMR, MS and elemental analysis results show that the obtained compound is the target product, and the chemical reaction equation of the preparation process is as follows:

[0061]

[0062] Preparation of 1-bromo-4-(4-bromophenyl)naphthalene

[0063]...

Embodiment example 1

[0078] Synthesis of Example 1 Polymer P1

[0079] Under argon atmosphere, 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-diyl)-9,9-dioctylfluorene ( 321mg, 0.50mmol), 2,7-dibromo-9,9-dioctylfluorene (263.3mg, 0.48mmol) and the polymerized monomer unit M1 (8.4mg, 0.02mmol) were added to a 50ml two-necked bottle, and then Add 12ml of refined toluene (toluene treated with concentrated sulfuric acid), then add palladium acetate (2.80mg, 12.45μmol) and tricyclohexylphosphine (6.98mg, 24.90μmol), then add 3ml of tetraethylammonium hydroxide aqueous solution (mass Fraction is 20%), heat up to 80 ℃, react for 24 hours; then add 24.3mg phenylboronic acid to carry out capping, after 12 hours, then use 0.1ml bromobenzene to carry out capping; after continuing to react for 12 hours, stop the reaction, and Cool down to room temperature, add the product dropwise to 300ml of methanol for precipitation, filter, then dissolve the crude product in 20mL of toluene, use 200-300 mesh silica gel ...

Embodiment example 2

[0083] Synthesis of Example 2 Polymer P2

[0084] Under argon atmosphere, 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-diyl)-9,9-dioctylfluorene ( 321mg, 0.50mmol), 2,7-dibromo-9,9-dioctylfluorene (246.8mg, 0.45mmol) and the polymerized monomer unit M1 (21.1mg, 0.05mmol) were added to a 50ml two-necked bottle, and then Add 12ml refined toluene, then add palladium acetate (2.80mg, 12.45μmol) and tricyclohexylphosphine (6.98mg, 24.90μmol), then add 3ml tetraethylammonium hydroxide aqueous solution (mass fraction is 20%), heat up to 80 ℃, reacted for 24 hours; then added 24.3mg of phenylboronic acid for capping, and after 12 hours, 0.1ml of bromobenzene was used for capping; after continuing the reaction for 12 hours, stop the reaction, and when the temperature dropped to room temperature, the product was added dropwise in Precipitate in 300ml of methanol, filter, then dissolve the crude product in 20mL of toluene, use 200-300 mesh silica gel as the stationary phase, and use ...

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Abstract

The invention discloses an electroluminescent polymer and a preparation method and application thereof. The method comprises the steps that under protection of inert gas, polymerization monomer unitsM1 and M2 and a monomer containing an Ar structure are completely dissolved with a solvent, and Suzuki polymerization reaction is conducted by heating under the action of a catalyst and tetraethyl ammonium hydroxide; phenylboronic acid is added, and constant temperature reaction is conducted; bromobenzene is added to continue constant temperature reaction; and obtained reaction liquid is purifiedto obtain the target product. According to the electroluminescent polymer, heteroatoms are contained, the fluorescence quantum yield and the carrier transmission capacity of a light-emitting materialcan be improved, and obtaining high-efficiency and stable light-emitting device performance of a light-emitting device is facilitated. The electroluminescent polymer has good solubility, and can be dissolved by the common organic solvent, and through spin-coating, ink-jet printing, printing forming or other methods, a light-emitting layer of a light-emitting diode can be prepared.

Description

technical field [0001] The invention belongs to the technical field of organic optoelectronics, and in particular relates to a class of electroluminescent polymers and a preparation method and application thereof. Background technique [0002] Organic light-emitting diode (OLED) displays use organic materials as light-emitting materials. The material structure is easy to modify and improve, and the selection range is wide; the driving voltage is low, only 3-12V DC voltage is required; self-illumination, no backlight is required; wide viewing angle , can be close to 180°; the response speed is fast, up to 1 μs; in addition, it has the advantages of light weight, ultra-thin, large size, flexible panel, and easy molding and processing. Due to the many advantages of OLED displays, it has attracted extensive attention from the scientific and industrial circles. Since Kodak Corporation of the United States developed OLED devices in 1987, many institutions have invested resources i...

Claims

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Application Information

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IPC IPC(8): C08G61/12H01L51/50H01L51/54
CPCC08G61/126C08G2261/122C08G2261/1412C08G2261/1646C08G2261/3142C08G2261/3243C08G2261/411C08G2261/5222H10K85/151H10K50/00
Inventor 应磊胡黎文郭婷彭俊彪
Owner SOUTH CHINA UNIV OF TECH
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