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Polymer, coating composition comprising same, and organic light emitting element using same

A polymer, mole fraction technology, applied in the direction of luminescent materials, electrical components, coatings, etc., can solve the problem of solution concentration gradient change, defective devices, materials cannot be dissolved well, etc., to reduce the driving voltage, improve the use of Effects of lifetime characteristics, excellent thermal and optical stability

Active Publication Date: 2020-05-08
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the commercialized material used in the deposition method has good crystallinity, so that the material cannot be dissolved well in the solution, or even if the material forms a solution, its crystals are easy to form, it is very likely that the concentration gradient of the solution will increase with the storage time. change, or form defective devices

Method used

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  • Polymer, coating composition comprising same, and organic light emitting element using same
  • Polymer, coating composition comprising same, and organic light emitting element using same
  • Polymer, coating composition comprising same, and organic light emitting element using same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0317]

[0318] (1) Preparation of Intermediate 5

[0319]

[0320] After dissolving 3-bromo-9-phenyl-9H-carbazole (9g, 27.9mmol) and 4-formylphenylboronic acid (4.18g, 27.9mmol) in anhydrous tetrahydrofuran (THF, 100mL), to it Put in Pd(PPh 3 ) 4 (0.32g, 0.28mmol) and 70ml2M potassium carbonate aqueous solution (K 2 CO 3 / H 2 0), the resulting mixture was refluxed for 6 hours. After cooling the reaction solution to room temperature, the organic layer was extracted. The reaction solution was concentrated and recrystallized with ethanol (EtOH) to obtain Intermediate 3 (8.9 g, yield 92%). MS:[M+H] + =348

[0321] Intermediate 3 (8.2 g, 23.6 mmol) was dissolved in dimethylformaldehyde (200 mL), N-bromosuccinimide (4.15 g, 23.6 mmol) was added thereto, and the resulting mixture was stirred at room temperature for 5 Hour. After distilled water was poured into the reaction solution to terminate the reaction, the organic layer was extracted. The reaction solution was ...

preparation example 2

[0326]

[0327] (1) Preparation of compound A1

[0328]

[0329] After intermediate 5 (3.65g, 8.615mmol), 4-(diphenylamino)phenylboronic acid (2.99g, 10.338mmol), Pd(PPh 3 ) 4 (498mg, 0.431mmol) and K 2 CO 3 (3.57g, 25.845mmol) was dissolved in anhydrous tetrahydrofuran (200ml) and distilled water (100ml), and the resulting solution was stirred at 70°C for 15 hours. The organic layer was extracted by using ethyl acetate and water. By using MgSO 4 After removing moisture from the organic layer, the solvent was removed under reduced pressure. The obtained material was subjected to column chromatography using ethyl acetate and hexane to separate and purify Compound A1. MS:[M+H] + =589

[0330] (2) Preparation of Compound A2

[0331]

[0332] Compound A2 was prepared in the same manner as in the method for preparing Compound A1 except that 4-(biphenylyl-4-ylamino)phenylboronic acid was used instead of 4-(diphenylamino)phenylboronic acid. MS:[M+H] + =741

[0333...

preparation example 3

[0354]

[0355] (1) Preparation of Compound B2

[0356]

[0357] (4-formylphenyl)boronic acid (4.91g, 32.778mmol), 3-bromobicyclo[4.2.0]oct-1(6),2,4-triene (5g, 27.315mmol), Pd( PPh 3 ) 4 (1.58g, 1.366mmol) and K 2 CO 3 (11.32g, 81.945mmol) was dissolved in anhydrous tetrahydrofuran (200ml) and distilled water (100ml), and the resulting solution was stirred at 70°C for 15 hours. The organic layer was extracted by using ethyl acetate and water. By using MgSO 4 After removing moisture from the organic layer, the solvent was removed under reduced pressure. The obtained material was subjected to column chromatography using ethyl acetate and hexane to isolate and purify Intermediate 7. MS:[M+H] + =209

[0358] Bromide methyl triphenyl Salt (13.41 g, 37.532 mmol) and potassium tert-butoxide (4.21 g, 37.532 mmol) were put into anhydrous tetrahydrofuran (30 ml), and the resulting solution was stirred. Thereafter, Intermediate 7 (3.90 g, 18.766 mmol) dissolved in anhyd...

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Abstract

The present specification relates to a polymer comprising a first unit represented by chemical formula 1 and a second unit represented by chemical formula 2, a coating composition comprising same, andan organic light emitting element formed using same.

Description

technical field [0001] This application claims priority and benefit from Korean Patent Application No. 10-2018-0024565 filed with the Korean Intellectual Property Office on February 28, 2018, the entire contents of which are incorporated herein by reference. [0002] The present specification relates to a polymer, a coating composition comprising the same, and an organic light emitting device formed by using the same. Background technique [0003] The phenomenon of organic luminescence is one of the instances where electrical current is converted into visible light by internal processes of specific organic molecules. The principle of the organic light emitting phenomenon is as follows. When the organic material layer is disposed between the anode and the cathode, if an electric current is applied between the two electrodes, electrons and holes are injected into the organic material layer from the cathode and the anode, respectively. The electrons and holes injected into th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/32C08F212/14H01L51/10H01L51/56H01L51/00
CPCC08F212/32C08F212/26C09D125/18H10K85/141H10K85/146H10K85/636H10K85/6572H10K50/17H10K71/00H10K71/13C08F212/14C09D5/24C09K11/06C09K2211/1466H10K85/111H10K85/151H10K50/11H10K50/15H10K2101/10
Inventor 康爱德裴在顺李载澈金填硕金禾景金光显金炳宰
Owner LG CHEM LTD
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