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

A technology of polymers and compositions, applied in the direction of electrical components, coatings, electrical solid devices, etc., can solve problems such as inability to dissolve materials well, defective devices, and changes in solution concentration gradients, and achieve excellent thermal stability and Optical stability, improved life characteristics, effects of lower driving voltage

Active Publication Date: 2020-05-15
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

[0224]

[0225] (1) Preparation of Intermediate 5

[0226]

[0227] 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

[0228] 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

[0233]

[0234] (1) Preparation of compound A1

[0235]

[0236] 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.

[0237] MS:[M+H] + =589

[0238] (2) Preparation of compound A2

[0239]

[0240] 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.

[0241] MS:[M+H...

preparation example 3

[0264]

[0265] (1) Preparation of Polymer C1

[0266]

[0267] After compound A1 (1 g) was dissolved in 5 ml of tetrahydrofuran (THF), azobisisobutyronitrile (AIBN) (4 mg) was put thereinto, and the resulting solution was stirred at 75° C. for 5 hours. Thereafter, 420 mg of polymer C1 was prepared by precipitation using ethanol and drying of the obtained solid. Mn=22,400Mw=39,500

[0268] (2) Preparation of Polymer C2

[0269]

[0270] 550 mg of Polymer C2 was prepared in the same manner as in the method for preparing Polymer C1 except that Compound A2 was used instead of Compound A1. Mn=30,400Mw=57,800

[0271] (3) Preparation of Polymer C3

[0272]

[0273] 490 mg of Polymer C3 was prepared in the same manner as in the method for preparing Polymer C1 except that Compound A3 was used instead of Compound A1. Mn=24,200Mw=43,800

[0274] (4) Preparation of Polymer C4

[0275]

[0276]620 mg of polymer C4 was prepared in the same manner as in the method for ...

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Abstract

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

Description

technical field [0001] This application claims priority and benefit from Korean Patent Application No. 10-2018-0024577 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): C08F12/32H01L51/10H01L51/56H01L51/00
CPCC08F112/32C08F112/26C09D125/18H10K85/141H10K50/17H10K71/441C08F12/32H10K85/111H10K85/151C08F126/12C09D139/04H10K50/11H10K50/15H10K71/00H10K71/15
Inventor 康爱德金填硕裴在顺李载澈金禾景金大虎
Owner LG CHEM LTD
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