Electroluminescent material, preparation method for same, and luminescent device prepared from electroluminescent material

A technology for electroluminescent materials and light-emitting devices, applied in the directions of light-emitting materials, electro-solid devices, electrical components, etc., can solve the problems of high production cost, unsatisfactory light-emitting brightness decay life, complicated preparation, etc. Conducive to the effect of industrialization promotion

Inactive Publication Date: 2013-07-03
GUOKE RE ADVANCED MATERIALS CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the five crystalline phases, the preparation of the α phase is relatively complicated, and generally requires vacuum sublimation to obtain it, and the cost of the product is very high; while the γ-AlQ 3 , δ-AlQ 3 , ε-AlQ 3 It belongs to the "high temperature phase", and generally requires a high temperature above 350 °C to o

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electroluminescent material, preparation method for same, and luminescent device prepared from electroluminescent material
  • Electroluminescent material, preparation method for same, and luminescent device prepared from electroluminescent material
  • Electroluminescent material, preparation method for same, and luminescent device prepared from electroluminescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 10g aluminum trichloride is dissolved in 60ml deionized water to obtain aluminum trichloride solution, 40g 8-hydroxyquinoline is dissolved in 100ml ethanol to obtain the ethanol solution of 8-hydroxyquinoline, after these two kinds of solutions are mixed, in Concentrate to about 50ml at 70°C, then keep the temperature at 70°C, and slowly drop into saturated sodium chloride solution under stirring condition. Yellow-green 8-hydroxyquinoline aluminum gradually precipitated, and the precipitate was filtered after the reaction was complete. The crude product was washed 3 times with deionized water and 5 times with methanol, and then dried in vacuum at 70° C. to obtain the final product. The XRD pattern of this product is as follows figure 1 shown.

Embodiment 2

[0036]20g aluminum isopropoxide is dissolved in 100ml ethanol to obtain aluminum isopropoxide solution, 52g 8-hydroxyquinoline is dissolved in 100ml acetone to obtain the acetone solution of 8-hydroxyquinoline, after these two kinds of solutions are mixed, at 70 °C to about 50ml, then maintain the temperature at 70 °C, and slowly add a saturated solution of sodium sulfate dropwise under stirring conditions. Yellow-green 8-hydroxyquinoline aluminum gradually precipitated, and the precipitate was filtered after the reaction was complete. The crude product was washed 5 times with deionized water and 7 times with tetrahydrofuran, and then dried in vacuum at 70° C. to obtain the final product.

Embodiment 3

[0038] Dissolve 30g aluminum sulfate octadecahydrate in 60ml deionized water to obtain aluminum sulfate octadecahydrate solution, dissolve 49g 8-hydroxyquinoline in 100ml methanol to obtain a methanol solution of 8-hydroxyquinoline, after mixing these two solutions, Concentrate to about 50ml at 60°C, then keep the temperature at 60°C, and slowly drop into saturated sodium sulfate solution under stirring condition. Yellow-green 8-hydroxyquinoline aluminum gradually precipitated, and the precipitate was filtered after the reaction was complete. The crude product was washed 7 times with deionized water and 3 times with tetrahydrofuran, and then dried in vacuum at 70° C. to obtain the final product.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides an electroluminescent material, a preparation method for the same, and a luminescent device prepared from the electroluminescent material. The electroluminescent material is zeta-phase 8-hydroxyquinoline electroluminescent material, and at least has diffraction peaks at the places where Bragg 2theta is 18.8+/-0.1 degrees, 22.2+/-0.1 degrees, 24.5+/-0.1 degrees and 25.6+/-0.1 degrees under the excitation of Cu K-alpha characteristic X-ray having a wavelength of 1.541 angstroms. In the preparation method provided by the invention, zeta-phase 8-hydroxyquinoline is prepared by adopting a salting-out method. The OLED (organic light emitting diode) device prepared from the zeta-phase 8-hydroxyquinoline provided by the invention has the advantages of being high in luminescent brightness and long in attenuation life.

Description

technical field [0001] The invention relates to an electroluminescence material, a preparation method thereof and a light-emitting device made of the material, belonging to the technical field of organic / complex photoelectric materials and devices. Background technique [0002] With the advent of the information age, novel, high-efficiency, and lightweight organic light-emitting diodes (OLEDs) have attracted widespread attention. The basic structure of OLED is a light-emitting device constructed by sandwiching organic light-emitting materials between two electrodes. Due to its advantages such as low driving voltage, easy realization of large-screen display, high brightness, wide viewing angle, and continuously adjustable luminous color, it makes OLED It has become a major research hotspot in the field of information display. As the third-generation display technology after cathode ray tube (CRT) and liquid crystal display (LCD), it has developed rapidly in recent years and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07F5/06C09K11/06H01L51/54
Inventor 温晓帆胡斌庄卫东何华强刘荣辉胡运生
Owner GUOKE RE ADVANCED MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap