Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic electroluminescent material and application thereof

An electroluminescent material and luminescent technology, applied in luminescent materials, organic chemistry, circuits, etc., can solve the problems of unable to meet the needs of high-generation OLED production lines, unstable film state, greenish color, etc., to achieve good film Good stability, good device efficiency, and low lighting voltage

Active Publication Date: 2021-04-27
VALIANT CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its thin film state is quite unstable and easy to crystallize, and its color light is slightly greenish (CIEx, y=0.20, 0.26), which is far from meeting the needs of high-generation OLED production lines.

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
  • Organic electroluminescent material and application thereof
  • Organic electroluminescent material and application thereof
  • Organic electroluminescent material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of embodiment 1 compound C01

[0040]

[0041] In a 250mL three-neck flask, add CBDA (3.9g, 0.02mol), boronamine intermediate A (15.9g, 0.04mol), propionic acid (120g), and the system is slowly heated to 100-120°C under nitrogen protection. After 24 hours of heat preservation reaction, off-white solid powder precipitated out of the reaction system. The system was cooled to room temperature, and filtered with suction to obtain a white filter cake. Use 100g of tetrahydrofuran to heat and dissolve the filter cake, and the obtained solution is quickly passed through a 15cm thick silica gel column, and the column liquid is desolventized to obtain a white solid crude product, which is recrystallized and purified by using toluene:petroleum ether=1:2, cooled, filtered and dried to obtain Compound C01, white solid 14.7g, yield 77.0%.

[0042] Mass spectrometry, APCI source, negative ion mode, molecular formula C 62 h 64 B 2 N 2 o 6 , the theoretical val...

Embodiment 2

[0043] The preparation of embodiment 2 compound C02

[0044]

[0045] According to the method described in Example 1 (preparation of compound C01), boronamine intermediate B (12.5g, 0.04mol) was dropped in to replace boronamine intermediate A (15.9g, 0.04mol) to obtain compound C02, white solid 10.0g , yield 63.6%.

[0046] Mass spectrometry, APCI source, negative ion mode, molecular formula C 50 h 40 B 2 N 2 o 6 , the theoretical value is 786.31, and the test value is 785.18. Elemental analysis (C50 h 40 B 2 N 2 o 6 ), theoretical value C: 76.36, H: 5.13, O: 12.20, measured value C: 76.31, H: 5.18, O: 12.22.

Embodiment 3

[0047] The preparation of embodiment 3 compound C07

[0048]

[0049] According to the method described in Example 1 (preparation of compound C01), DMCBDA (4.5 g, 0.02 mol) was added instead of CBDA (3.9 g, 0.02 mol) to obtain compound C07, 15.7 g of white solid, yield 79.9%.

[0050] Mass spectrometry, APCI source, negative ion mode, molecular formula C 64 h 68 B 2 N 2 o 6 , the theoretical value is 982.53, and the test value is 981.44. Elemental analysis (C 64 h 68 B 2 N 2 o 6 ), theoretical value C: 78.21, H: 6.97, O: 9.77, measured value C: 78.27, H: 6.91, O: 9.72.

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

PropertyMeasurementUnit
luminanceaaaaaaaaaa
current efficiencyaaaaaaaaaa
Login to View More

Abstract

The invention relates to an organic electroluminescent material. The organic electroluminescent material is characterized in that a structural formula of the organic electroluminescent material is represented by a formula (I) in the specification. In the formula (I), X1 represents any one of a tetra-substituted aliphatic ring with a carbon atom number of not more than 16 and derivatives thereof; and X2 represents any one of dibenzoheteroaromatic ring derivatives. The organic electroluminescent material is applied to an electroluminescent layer of an organic electroluminescent device, and the organic electroluminescent material is applied to the electroluminescent layer as a blue-light fluorescent host material. The structure of the organic electroluminescent material has the characteristics of proper molecular conjugate length, high non-planar structure and proper molecular mass, so the organic electroluminescent material has good film stability and a proper molecular energy level; and when the organic electroluminescent material is applied to the organic electroluminescent device, turn-on voltage is lower, and maximum current efficiency is higher.

Description

technical field [0001] The invention relates to an organic electroluminescent material and its application, belonging to the technical field of organic photoelectric materials. Background technique [0002] Pope et al. first discovered the electroluminescent properties of single crystal anthracene in 1965. This is the first electroluminescent phenomenon of organic compounds. After years of continuous development, organic electroluminescent devices can be used to manufacture new display products. It can also be used to make new lighting products, which is expected to replace the existing liquid crystal display and fluorescent lighting. [0003] At present, products based on OLED display technology have been industrialized. Compared with liquid crystal display technology, OLED display technology has many advantages such as self-luminescence, no radiation, light weight, thin thickness, wide viewing angle, wide color gamut, stable color, fast response speed, strong environmenta...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/02C07D487/04C07D487/08C09K11/06H01L51/50H01L51/54
CPCC07F5/02C07D487/04C07D487/08C09K11/06C09K2211/1044C09K2211/1096C09K2211/1033C09K2211/1029H10K85/657H10K85/6572H10K50/125
Inventor 高树坤高斌付少邦闫磊宣力琪
Owner VALIANT CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com