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Spirofluorene and nitrogen-containing hetercyclic organic electroluminescent material and organic luminescent device thereof

A nitrogen heterocycle and electroluminescence technology, applied in luminescent materials, electro-solid devices, electrical components, etc., can solve the problems of low luminous efficiency and low lifespan, and achieve high luminous efficiency, high glass transition temperature, carrier The effect of transmission balance

Inactive Publication Date: 2018-08-17
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For commonly used anthracene-based fluorescent blue light materials, the luminous efficiency is low; for phosphorescent blue light materials such as Firpic, the lifetime is low

Method used

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  • Spirofluorene and nitrogen-containing hetercyclic organic electroluminescent material and organic luminescent device thereof
  • Spirofluorene and nitrogen-containing hetercyclic organic electroluminescent material and organic luminescent device thereof
  • Spirofluorene and nitrogen-containing hetercyclic organic electroluminescent material and organic luminescent device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Embodiment 1: the preparation of compound 9

[0071]

[0072] Step1. Under the protection of nitrogen, 100mmol of 2-bromobiphenyl was dissolved in anhydrous THF, and added dropwise to a round bottom flask filled with 110mmol of magnesium chips. After triggering, continue to drop 2-bromobiphenyl solution, and reflux for 3 hours. , add dropwise 9-1, 120mmol THF solution to the reaction system, reflux overnight after dropwise addition, cool and filter the yellow solid, add it to aqueous ammonium chloride solution and stir for 2 hours, filter and dry to obtain a white solid, put the white solid into boiling in ethanol solution, cooled, poured into water, a white solid was precipitated, filtered, recrystallized from ethanol to obtain the product, 90mmol 9-2.

[0073] Step2. Add 90mmol of 9-2 to a three-necked flask, dissolve in acetic acid solution, react at 90°C for 12 hours, pour into water, filter, and recrystallize from toluene to obtain 70mmol of product 9-3.

[007...

Embodiment 2

[0077] Embodiment 2: the preparation of compound 20

[0078] With embodiment 1. Replace o-nitrophenol in step3. with o-nitrothiophenol. Replace iodobenzene in Step5. with 3-iodopyridine.

Embodiment 3

[0079] Embodiment 3: the preparation of compound 23

[0080] Same as Example 1, the iodobenzene in Step5. was replaced by 2-chloro-4,6-diphenyl-1,3,5-triazole.

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PUM

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Abstract

The invention provides a spirofluorene and nitrogen-containing hetercyclic organic electroluminescent material and an organic luminescent device thereof and belongs to the technical field of organic photoelectric materials. The spirofluorene and nitrogen-containing hetercyclic organic electroluminescent material structurally contains a spirofluorene structure which is a blue-light structure with excellent property, not only has higher triplet energy level and wider energy gap, but also is higher in vitrifying conversion temperature and difficult in crystallization; by connection of groups suchas phenoxazine and phenothiazine and the like in molecules, the cavity transmission capability of the blue-light main body structure is added, so that the transportation of current carriers is balanced. Compared with the prior art, the spirofluorene and nitrogen-containing hetercyclic organic electroluminescent material is applied to the organic luminescent device, is especially used as a blue luminescent material in a luminescent layer and has relatively-higher luminescent efficiency.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to a spirofluorene and nitrogen-containing heterocyclic organic electroluminescence material and an organic light-emitting device thereof. Background technique [0002] Organic electroluminescence refers to the phenomenon that organic materials are excited by electric current and electric field to emit light under the action of electric field. Organic light-emitting diodes (OLEDs) are a next-generation display technology that utilizes this phenomenon to realize displays. Since Tang C.W. and Vanslyke S.A. of American Kodak Company produced the first organic electroluminescent device with excellent performance in 1987, organic electroluminescent displays have attracted great interest due to their advantages. [0003] At present, due to their excellent performance, red and green light-emitting materials have been used commercially, while the wide energy gap and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D265/34C07D279/14C07D413/04C07D417/04C07D417/10C07D413/10C07D241/38C07D221/20C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D221/20C07D241/38C07D265/34C07D279/14C07D413/04C07D413/10C07D417/04C07D417/10C09K2211/1059C09K2211/1037C09K2211/1033C09K2211/1092C09K2211/1088C09K2211/1011C09K2211/1007C09K2211/1014C09K2211/1029H10K85/624H10K85/622H10K85/626H10K85/631H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K50/11
Inventor 孙可一蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
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