A kind of organic electroluminescent composition

A technology of electroluminescent materials and electroluminescent devices, applied in organic chemistry, luminescent materials, circuits, etc., can solve the problems of limiting the application space of phosphorescent materials and expensive phosphorescent materials, and achieve excellent thermal stability and excellent film stability sex, good potency effect

Active Publication Date: 2019-08-16
VALIANT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The efficiency of phosphorescent devices is higher than that of fluorescent devices. However, phosphorescent devices also have their disadvantages. For example, phosphorescent materials are mainly complexes containing noble metals, especially metal iridium and platinum complexes. Since metal iridium and platinum are expensive, so , the price of phosphorescent materials is extremely expensive, which also limits the application space of phosphorescent materials

Method used

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  • A kind of organic electroluminescent composition
  • A kind of organic electroluminescent composition
  • A kind of organic electroluminescent composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: the preparation of compound C01:

[0043]

[0044] Compound 1 was prepared according to the method described in the literature Chemical Communications.2015, 51(46), 9443-9446.

[0045] Preparation of compound 2: In a 1L three-necked flask, add compound 1 (20g, 0.06mol), o-bromoiodobenzene (200g, 0.71mol), potassium carbonate (13.8g, 0.1mol), copper powder (6.5g, 0.1mol ), under the protection of nitrogen, heat up to 180°C, keep the temperature for 32h, cool down to 25°C, add 150mL of deionized water to the reaction solution, stir for 0.5h, separate the liquid, extract the organic phase with 150g of toluene, combine the organic phase, and wash with 150mL of water The organic phase was distilled under reduced pressure to remove toluene and excess o-bromoiodobenzene, and the crude product of the obtained target was purified by silica gel column chromatography, dichloromethane:petroleum ether=1:4 elution (V / V), to obtain the compound 2 fine product 21g, yi...

Embodiment 2

[0049] Embodiment 2: the preparation of compound C02:

[0050]

[0051] Using compound 5 as a raw material, according to the method described in Example 1, compound C02 was prepared to obtain 1.3 g of the target object, high-resolution mass spectrometry, positive ion mode, molecular formula C 48 h 29 N 3 , theoretical value 647.2361, test value 647.2365, elemental analysis (C 48 h 29 N 3 ), theoretical value C: 89.00, H: 4.51, N: 6.49, measured value C: 89.02, H: 4.55, N: 6.43.

Embodiment 3

[0052] Embodiment 3: the preparation of compound C04:

[0053]

[0054] Using compound 6 as a raw material, referring to the method described in Example 1, compound C04 was prepared to obtain 1.2 g of the target substance, high-resolution mass spectrometry, positive ion mode, molecular formula C 54 h 41 N 3 , theoretical value 731.3300, test value 731.3305, elemental analysis (C 54 h 41 N 3 ), theoretical value C: 88.61, H: 5.65, N: 5.74, measured value C: 88.64, H: 5.63, N: 5.73.

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Abstract

An organic electroluminescent composition. The invention discloses a small-molecule organic electroluminescent material with two helical centers. This type of material has a D-A molecular structure, which is beneficial to the realization of thermally activated delayed fluorescent light emission. This type of material can be used as a small-molecule organic electroluminescent material. The light-emitting layer of a luminescent device is applied in the field of organic electroluminescence. The realization of highly efficient fluorescent devices has brought a new direction for the manufacture of high-efficiency fluorescent devices.

Description

technical field [0001] The invention belongs to the field of organic electroluminescence, relates to a small molecule organic electroluminescence composition, and relates to the application of the composition in the field of organic electroluminescence. Background technique [0002] Organic electroluminescent diode (OLED) was produced in the 1980s. It has many advantages such as self-illumination, wide viewing angle, fast response speed, wide color gamut, and flexible display. After nearly 30 years of continuous development, This technology has gradually matured. At present, organic electroluminescent technology has been widely used in many products such as smart phones, flat-panel TVs, and virtual reality. [0003] Organic electroluminescent devices are current-driven light-emitting devices. According to different light-emitting mechanisms, they can be divided into two types: fluorescent devices and phosphorescent devices. When charges are injected into the device from the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D471/10C09K11/06H01L51/54
CPCC09K11/06C07D471/10C09K2211/1029H10K85/6572
Inventor 陈阳张鑫鑫盛磊李小梅胡葆华许琰
Owner VALIANT CO LTD
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