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

Organic electronic transmission and/or hole barrier materials, synthesis method and use thereof

A technology of hole-blocking materials and organic electronics, applied in chemical instruments and methods, luminescent materials, organic chemistry, etc., can solve problems such as changes in luminescent properties, stability to be further improved, and poor device performance

Active Publication Date: 2014-08-20
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) and 1,3,5-tris(N-phenyl-2-benzimidazole)benzene ( TPBI) is an electron transport / hole blocking material widely used in electroluminescent devices, but its stability in the device needs to be further improved
However, due to its strong intramolecular interactions (such as ∏-∏ overlap), exciplexes are easily formed in the film, which changes its luminescent properties
Therefore, the device performance is poor
So far rarely used in organic electroluminescent devices

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 electronic transmission and/or hole barrier materials, synthesis method and use thereof
  • Organic electronic transmission and/or hole barrier materials, synthesis method and use thereof
  • Organic electronic transmission and/or hole barrier materials, synthesis method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0056] Embodiment 1.1, the preparation of 4-bis(2-(4,6-diphenyl-5-trifluoromethylpyridine))benzene (BDTPB)

[0057]

[0058] The first step: take 2-bromo-1-(4-trifluoromethylphenyl)ethanone and pyridine with a molar ratio of 1 as raw materials, stir at room temperature for 10 hours, filter, and wash with a large amount of water to obtain the corresponding pyridine Bromide, the yield is about 90%;

[0059] The second step: under the condition of nitrogen protection, add the product of the first step, p-benzophenone and benzaldehyde (2:1:2 in molar ratio) into the three-necked bottle, and then add appropriate amount of glacial acetic acid and ammonium acetate , stirred vigorously, kept the temperature at 120° C. to 140° C., refluxed for 24 hours, filtered out the product, and subjected to column chromatography or recrystallization to obtain the high-purity target product with a yield of about 50%.

[0060] m / z: 672.20 (100.0%), 673.20 (46.2%), 674.21 (10.2%), 675.21 (1.5%). ...

Embodiment 21

[0070] Example 2.1, Preparation of 4-bis(2-(6-phenyl-4-p-tolyl-5-trifluoromethylpyridine))benzene (BPTTPB)

[0071]

[0072] The first step: take 2-bromo-1-(4-trifluoromethylphenyl)ethanone and pyridine with a molar ratio of 1 as raw materials, stir at room temperature for 8 hours, filter, and wash with a large amount of water to obtain the corresponding pyridine Bromide, the yield is about 90%;

[0073] The second step: under the condition of nitrogen protection, the product of the first step, p-benzenediphenone and p-tolualdehyde (2:1:2 in molar ratio) are added in the three-necked flask, and then an appropriate amount of glacial acetic acid is added and ammonium acetate, stirred vigorously, kept the temperature at 120°C to 140°C, refluxed for 24 hours, filtered out the product, and subjected to column chromatography or recrystallization to obtain the high-purity target product with a yield of about 55%.

[0074] m / z: 700.23 (100.0%), 701.23 (48.3%), 702.24 (11.2%), 703....

Embodiment 36

[0075] Embodiment 3.6, the preparation of 6'-(1,4-phenylene) bis(2,4-diphenylpyridinenitrile) (PBDNN)

[0076]

[0077]The first step: take 4-(2-bromoacetyl) benzonitrile and pyridine with a molar ratio of 1 as raw materials, stir at room temperature for 7 hours, filter, and wash with a large amount of water to obtain the corresponding pyridinium bromide salt with a yield of about 85%;

[0078] The second step: under the condition of nitrogen protection, add the product of the first step, p-benzophenone and benzaldehyde (2:1:2 in molar ratio) into the three-necked bottle, and then add appropriate amount of glacial acetic acid and ammonium acetate , stirred vigorously, kept the temperature at 120° C. to 140° C., refluxed for 24 hours, filtered out the product, and subjected to column chromatography or recrystallization to obtain the high-purity target product with a yield of about 60%.

[0079] m / z: 586.22 (100.0%), 587.22 (45.7%), 588.22 (10.7%), 589.23 (1.5%), 587.21 (1.5...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
luminanceaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of organic electron transport / hole blocking materials in organic electroluminescent devices, and particularly relates to a class of polyaryl-substituted pyridine derivatives used for organic electron transport and / or hole blocking materials and their synthesis methods, and Use of such polyaryl-substituted pyridine derivative materials in preparing organic electroluminescent devices. Through molecular design, the present invention introduces some large substituents with rigid structures to make it less likely to form exciplexes, inhibits its crystallization process, improves its film-forming properties, and improves its charge transport performance; at the same time, the coplanarity of the molecules is destroyed The emission peak will be blue-shifted, thereby achieving the purpose of improving device performance. One type of polyaryl-substituted pyridine derivatives of the present invention includes the following structures.

Description

[0001] related application [0002] This application is a divisional application of a Chinese invention patent application with the application number 200710176008.3 and the filing date of October 17, 2007, entitled "Organic Electron Transport and / or Hole Blocking Materials and Their Synthesis Method and Application". technical field [0003] The invention belongs to the field of organic electron transport / hole blocking materials in organic electroluminescent devices, in particular to a class of polyaryl-substituted pyridine derivatives and a synthesis method thereof for organic electron transport and / or hole blocking materials, and The use of the polyaryl-substituted pyridine derivative material in the preparation of organic electroluminescent devices. Background technique [0004] With the development of multimedia technology and the advent of the information society, the performance requirements of flat panel displays are getting higher and higher. Three new display tech...

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 Patents(China)
IPC IPC(8): C07D401/10C09K11/06H01L51/05H01L51/30H01L51/42H01L51/46H01L51/50H01L51/54H01L51/00H10K99/00
CPCY02E10/549
Inventor 汪鹏飞李娜刘卫敏李述汤
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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