Organic electron transport and/or hole blocking material and its synthesis method and use

A hole-blocking material and organic electron technology, applied in chemical instruments and methods, light-emitting materials, organic chemistry, etc., can solve the problems of changes in light-emitting properties, further improvement of stability, and poor device performance.

Active Publication Date: 2014-10-15
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 electron transport and/or hole blocking material and its synthesis method and use
  • Organic electron transport and/or hole blocking material and its synthesis method and use
  • Organic electron transport and/or hole blocking material and its synthesis method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0056] Embodiment 1.1, the preparation of 4-bis(4-(2-phenyl-6-p-tolyl-3-trifluoromethylpyridine))benzene (BPTTPB)

[0057] 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 11 hours, filter, and wash with a large amount of water to obtain the corresponding pyridine Bromide, the yield is about 90%;

[0058] The second step: under the condition of nitrogen protection, the product of the first step, terephthalaldehyde and p-methylacetophenone (molar ratio is 2:1:2) 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 50%.

[0059] m / z: 700.23 (100.0%), 701.23 (48.3%), 702.24 (11.2%), ...

Embodiment 21

[0069] Example 2.1, Preparation of 4-bis(4-(6-(4-biphenyl)-2-phenyl-3-trifluoromethylpyridine))benzene (BBPTPB)

[0070]

[0071] The first step: take 2-bromo-1-(4-trifluoromethylphenyl)ethanone with a molar ratio of 1, and pyridine as a raw material, stir at room temperature for 12 hours, filter, and wash with a large amount of water to obtain the corresponding pyridine Bromide, the yield is about 90%;

[0072] The second step: under the condition of nitrogen protection, the product of the first step, terephthalaldehyde and p-phenylacetophenone (molar ratio is 2:1:2) 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%.

[0073] m / z: 824.26 (100.0%), 825.27 (58.8%), 826.27...

Embodiment 34

[0074]Embodiment 3.4, the preparation of 4'-(1,4-phenylene) bis(2-phenyl-6-p-tolylpyridinecarbonitrile) (PBPTNN)

[0075] The first step: get 4-(2-bromoacetyl) benzonitrile with a molar ratio of 1, pyridine is a raw material, stir at room temperature for 10 hours, filter, and wash with a large amount of water to obtain the corresponding pyridinium bromide, with a yield of about 85%;

[0076] The second step: under the condition of nitrogen protection, the product of the first step, terephthalaldehyde and p-methylacetophenone (molar ratio is 2:1:2) 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 60%.

[0077] m / z: 614.25 (100.0%), 615.25 (47.9%), 616.25 (11.8%), 617.26 (1.7%...

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 electronic transmission and / or cavity barrier materials in organic electroluminescence devices and particularly relates to polyarylate substituted pyridine derivates of the organic electronic transmission and / or hole-barrier material, a synthesis method thereof and use of the polyarylate substituted pyridine derivate material in manufacturing of organic electroluminescence device. In the invention, some large substitutes with a rigid structure are introduced by cellular design, so that exciplex is difficult to generate, a crystallization process is restrained, the film forming property is improved, and charge transmission performance is improved; meanwhile, the destruction of molecular coplanarity causes emission peak hypochromatic shift, so that the device performance is improved. The polyarylate substituted pyridine derivates of the invention have a structure below.

Description

[0001] related application [0002] This application is a divisional application of a Chinese invention patent application with the application number 200710176009.8 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): C07D213/26C07D213/85C07D213/80C07D213/84C07D405/14C07D213/30C09K11/06H01L51/54H01L51/56
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 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