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Host material and organic electroluminescent device comprising same

A main material and luminescent technology, which is applied in the manufacture of electric solid devices, semiconductor devices, semiconductor/solid state devices, etc., can solve the problems of lack of materials and achieve high luminous efficiency

Active Publication Date: 2022-01-11
ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, host materials with both high triplet energy levels and good hole mobility are still lacking.

Method used

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  • Host material and organic electroluminescent device comprising same
  • Host material and organic electroluminescent device comprising same
  • Host material and organic electroluminescent device comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Embodiment 1: the synthesis of compound 1-18

[0098] (1) Synthesis of intermediate 1-1-2

[0099]

[0100] Compound 1-18-2 (7.9g, 23.7mmol), 1-18-1 (6.53g, 21.6mmol), tetrakis (triphenylphosphine) palladium (1.2g, 1.0mmol), potassium carbonate (7.5g, 59 mmol), 90 mL of toluene, 30 mL of ethanol, and 30 mL of distilled water were added to the reaction vessel, and the reaction was stirred at 120° C. for 4 hours. After the reaction was complete, methanol was added dropwise to the mixture, and the resulting solid was filtered. The resulting solid was recrystallized and purified by column chromatography to obtain compound 1-18-3 (5.4 g, yield: 53%). LC-MS: M / Z 469.13 (M + ).

[0101] (2) Synthesis of Compound 1-18

[0102] Compound A (10.1g, 23.7mmol), 1-18-3 (10.2g, 21.6mmol), tetrakis (triphenylphosphine) palladium (1.2g, 1.0mmol), potassium carbonate (7.5g, 59mmol), 90mL Toluene, 30 mL of ethanol, and 30 mL of distilled water were added to the reaction vessel, a...

Embodiment 2

[0103] Embodiment 2: the synthesis of compound 1-39

[0104]

[0105] Compound 1-39 was synthesized with reference to the method of Example 1, and the synthesis of compound 1-18 was referred to for other steps to obtain compound 1-39 (8.9 g, yield: 67%). LC-MS: M / Z616.19 (M + ).

Embodiment 3

[0106] Embodiment 3: the synthesis of compound 2-83

[0107]

[0108] Compound 2-83 was synthesized with reference to the method of Example 1, and the synthesis of compound 1-18 was referred to for other steps to obtain compound 2-83 (11.1 g, yield: 63%). LC-MS: M / Z817.28 (M + ).

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Abstract

The present invention provides a host material and an organic electroluminescent device comprising the same, the host material comprising at least one first host compound and at least one second host compound, wherein the first host compound is represented by the following formula 1 and the second host compound The two-host compound is represented by the following formula 2: Formula 1 Formula 2 The organic electroluminescent device of the present invention has excellent luminous efficiency and lifetime.

Description

technical field [0001] The present invention relates to a host material, more specifically, to a host material and an organic electroluminescent device containing the host material. Background technique [0002] With the development of multimedia technology and the improvement of informatization requirements, the performance requirements of panel displays are getting higher and higher. Among them, OLED has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, and rich colors. It has attracted widespread attention for its potential application in the new generation of display and lighting technologies, and its application prospects are very broad. Organic electroluminescent devices are spontaneous light-emitting devices. The mechanism of OLED light emission is that under the action of an external electric field, electrons and holes are respectively injected from the positive and negative electrodes and then migrate, recombine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06H01L51/54H01L51/50
CPCC09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/1033C09K2211/1088C09K2211/1074H10K85/626H10K85/615H10K85/6574H10K85/657H10K85/6572H10K50/12H10K50/15H10K50/16H10K50/17H10K50/171H10K50/11
Inventor 叶绪兵赵晓宇高春吉
Owner ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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