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Deuterium-containing compound, and organic light-emitting device comprising same

A compound and integer technology, applied in the field of organic light-emitting devices, can solve the problems of shortened service life of light-emitting devices, compatibility of difficult inverse system stability, etc., and achieve the effect of excellent service life characteristics

Pending Publication Date: 2021-03-19
LG CHEM LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, when the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) in the molecule are clearly separated without mixing the HOMO and LUMO, the π-conjugated system in the molecule is reduced or cut off, so it is difficult to make the reverse Intersystem crossing is compatible with stability, and thus, reduced lifetime of light emitting devices

Method used

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  • Deuterium-containing compound, and organic light-emitting device comprising same
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  • Deuterium-containing compound, and organic light-emitting device comprising same

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Embodiment approach

[0230] Hereinafter, the specification will be described in detail with reference to Examples for specifically describing the specification. However, the embodiments according to the present specification can be modified in various forms, and it should not be construed that the scope of the present application is limited to the embodiments described in detail below. The examples of this application are provided to more fully explain this description to those of ordinary skill in the art.

preparation example 1-1

[0233] Preparation Example 1-1: Synthesis of Compound 1

[0234]

[0235] Mix 10 g (60.9 mmol) of 2,5-difluoroterephthalonitrile, 122 mmol of 9H-carbazole-1,2,3,4-d4, 100 mL of dimethylformamide (DMF) and 244 mmol of potassium carbonate, and The resulting mixture was heated to 100°C and stirred for 3 hours. After the reaction, a solid was obtained by filtering the reaction solution cooled to room temperature, and then the solid was recrystallized twice with tetrahydrofuran and ethanol to obtain Compound 1 (25.6 g) (yield 90%).

[0236] MS[M+H]+=467

preparation example 1-2

[0237] Preparation Example 1-2: Synthesis of Compound 2

[0238]

[0239] 12.2 g (60.9 mmol) of 2,3,5,6-tetrafluoroterephthalonitrile, 243.6 mmol of 9H-carbazole-1,2,3,4-d4, 120 mL of DMF and 487 mmol of potassium carbonate were mixed, and the obtained The mixture was heated to 100°C and stirred for 3 hours. After the reaction, a solid was obtained by filtering the reaction solution cooled to room temperature, and then the solid was recrystallized twice with tetrahydrofuran and ethanol to obtain Compound 2 (39.7 g) (yield 81%).

[0240] MS[M+H]+=805

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Abstract

The present specification provides a compound represented by chemical formula 1, and an organic light-emitting device comprising same.

Description

technical field [0001] The present invention relates to deuterium-containing compounds and organic light-emitting devices comprising the same. [0002] This application claims priority and benefit from Korean Patent Application No. 10-2018-0128593 filed with the Korean Intellectual Property Office on October 26, 2018, the entire contents of which are incorporated herein by reference. Background technique [0003] The present invention relates to novel organic compounds which can be advantageously used in organic light-emitting devices. More particularly, the present invention relates to thermally activated delayed fluorescence (TADF) materials substituted with deuterium and their use in OLEDs. [0004] Fluorescent light-emitting materials utilizing the thermally activated delayed fluorescence phenomenon are also referred to as thermally activated materials utilizing the phenomenon in which reverse intersystem crossing (hereinafter, appropriately abbreviated as "RISC") from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D209/82C07D401/14C07D403/14C07D487/04H01L51/00H01L51/50
CPCC07D209/82C07D401/14C07D403/14C07D487/04C07D409/14C07D403/10C09K11/06C07D209/86H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K50/11H10K2101/20H10K50/115C07B2200/05C09K2211/1018H10K2101/10H10K2101/30
Inventor 尹洪植洪玩杓金振珠李东勋金明坤
Owner LG CHEM LTD
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