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

Conjugated polymer containing oxdiazole and its application

A conjugated polymer, oxadiazole technology, applied in the directions of luminescent materials, chemical instruments and methods, can solve the problems of lack of electron transport materials, poor solubility, incomplete polyhydrazide, etc., to achieve good electron transport, Good thermal stability and color purity

Inactive Publication Date: 2003-06-04
INST OF CHEM CHINESE ACAD OF SCI
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This synthesis route has two weaknesses: polyhydrazide has poor solubility in general organic solvents and is difficult to purify, so that impurities will be brought into the final target product, and the impurity of the material has a fatal impact on the operability of the device; Polyhydrazide and the final product in a dehydrating solvent such as POCl 3 The solubility in medium is poor, and the cyclodehydration reaction of polyhydrazide is not complete
[0005] At present, there is a lack of electron transport materials for polyfluorenes, and there are no literatures and patents reporting copolymers of fluorenes and oxadiazoles and their applications in organic electroluminescence

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
  • Conjugated polymer containing oxdiazole and its application
  • Conjugated polymer containing oxdiazole and its application
  • Conjugated polymer containing oxdiazole and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Synthetic route such as figure 1 and figure 2 shown. (1) 9,9-bis(2-ethylhexyl)fluorene (compound 2 for short)

[0018] Add 30mmol (4.98g) of fluorene (compound 1) into a 250mL three-necked flask, vacuumize and fill with argon for 30min, inject 95mL of diethyl ether, cool to -78°C with liquid nitrogen-acetone, add dropwise 30mmol (18.75mL) of 1.6M n-butyl Lithium n-hexane solution. After 2h, add 30mmol (5.79g) 2-ethylhexyl bromide-5mL Et 2 O, the reaction mixture was stirred at -78-20°C for 4h. Add 100mL deionized water to wash, extract with 50mL ether, and use anhydrous MgSO 4 Dry, remove the solvent, freeze-dry to give pale yellow oil (10.76g, 92%).Anal.Calcd for C 29 h 42 : C, 89.16; H, 10.84.Found: C, 88.67; H, 10.98%.m / z(EI)390(M + ). 1 H NMR (300 MHz, CDCl 3 ): δ7.64(d, 2H), 7.33(d, 2H), 7.23(dd, 4H), 1.96(br, 4H), 1.26(s, 2H), 0.88-0.63(m, 22H), 0.47( t, 6H).(2) 2,7-dibromo-9,9-bis(2-ethylhexyl)fluorene (compound 3 for short)

[0019] Add 64mmol (25g)...

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 present invention discloses one kind of conjugated polymer containing oxidazole and with excellent electron injection and transmission capacity and its application as blue electroluminescence material in organic planar display device. The polymer has good dissolvability, heat stability, electronic transmission, color purity, etc.

Description

Technical field: [0001] The invention relates to a class of conjugated high polymer containing oxadiazole and its application as a blue electroluminescent material in organic flat display devices. Background technique: [0002] Since 1987 Kodak Corporation of the United States (Tang, C.W.; Vanslyke, S.A. Appl. Phys. Lett. 1987, 51, 913) and the University of Cambridge in 1990 (Burroughes, J.H.; Jones, C.A.; Friend, R.H. Nature 1990, 335, 137 ) since the introduction of high-efficiency organic and polymer electroluminescent devices (LEDs), it has aroused worldwide international competition in the fields of material science and information technology—organic polymer full-color flat display materials and devices. Its advantages such as self-illumination, high brightness, high efficiency, low-voltage DC drive, low cost, no viewing angle dependence, fast response speed, thin, light, good flexibility, large area and full-color display have shown brilliant prospects for modern disp...

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): C08F34/00C09K11/06
Inventor 占肖卫刘云圻武霞朱道本
Owner INST OF CHEM 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