Spirofluorene nitrogen-containing heterocyclic ring organic electroluminescent material and organic light-emitting device thereof

A nitrogen-heterocyclic and luminescent technology, applied in luminescent materials, electrical solid devices, electrical components, etc., can solve the problems of exciton quenching and achieve the effects of increased stability, good luminous efficiency, and good blue light performance

Inactive Publication Date: 2018-11-30
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only using materials such as firpic can easily cause the problem of exciton quenching. People often use host-guest doping to solve the above problems.

Method used

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  • Spirofluorene nitrogen-containing heterocyclic ring organic electroluminescent material and organic light-emitting device thereof
  • Spirofluorene nitrogen-containing heterocyclic ring organic electroluminescent material and organic light-emitting device thereof
  • Spirofluorene nitrogen-containing heterocyclic ring organic electroluminescent material and organic light-emitting device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Embodiment 1: the preparation of compound 93

[0068]

[0069] Step1. Take 100mmol of 93-4, add 1 equivalent of 0-2, 300mmol of sodium carbonate, 1mmol of tetrakistriphenylphosphopalladium, toluene, ethanol, water mixed solvent, replace with argon three times, react at reflux temperature for 5h, and the reaction ends Finally, deionized water was added, the organic phase was separated, washed three times with water, concentrated, and the obtained crude product was passed through a silica gel column to obtain 80 mmol of the product 93-3.

[0070] Step2. Add product 93-3 80mmol in the reaction vessel; iodobenzene 80mmol, potassium tert-butoxide 240mmol, Pd 2 (dba) 3 0.8mol, ultrasonic deoxygenated xylene, stirred to dissolve, replaced the air three times, added 4% tri-tert-butylphosphine ligand, 2.4mmol, replaced the air three times again, and refluxed for 6h. Cool to room temperature, add enough dichloromethane to completely dissolve the product, pass through a smal...

Embodiment 2

[0073] Embodiment 2: the preparation of compound 95

[0074] With embodiment 1, the iodobenzene in Step2 is replaced by

Embodiment 3

[0075] Embodiment 3: the preparation of compound 97

[0076] With embodiment 1, the iodobenzene in Step2 is replaced by

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PUM

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Abstract

The invention discloses a spirofluorene nitrogen-containing heterocyclic ring organic electroluminescent material and an organic light-emitting device thereof, and belongs to the technical field of organic electroluminescent materials. The invention provides a structure of the spirofluorene nitrogen-containing heterocyclic ring organic electroluminescent material containing a phenanthrene-containing spirofluorene indolocarbazole structure. With proper triplet state energy level and good hole transport efficiency, a carbazole group is suitable for being served as a main body material, but the application of the material is limited by low glass transition temperature of the material. The stability of a compound is effectively improved and the vitrification temperature is slightly improved bycombining a spirofluorene group with the carbazole group. Further, a benzene ring is combined with spirofluorene molecules to form a phenanthrene structure, so that the material has better blue lightproperty. A device prepared by using the material has better luminous 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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IPC IPC(8): C07D209/96C07D401/04C07D401/10C07D403/04C07D405/04C07D409/04C07D413/04C07D413/10C07D417/04C07D417/10C09K11/06H01L51/54
CPCC09K11/06C07D209/96C07D401/04C07D401/10C07D403/04C07D405/04C07D409/04C07D413/04C07D413/10C07D417/04C07D417/10C09K2211/1088C09K2211/1092C09K2211/1044C09K2211/1033C09K2211/1037C09K2211/1059C09K2211/1011C09K2211/1029H10K85/615H10K85/624H10K85/654H10K85/657H10K85/6576H10K85/6572
Inventor 孙可一蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
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