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
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

Examples

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Example Embodiment

[0017] Synthetic route such as figure 1 with figure 2 Shown. (1) 9,9-bis(2-ethylhexyl) fluorene (abbreviated as compound 2)

[0018] Add 30mmol (4.98g) of fluorene (compound 1) to a 250mL three-necked flask, vacuum and fill with argon for 30min, inject 95mL of ether, cool to -78℃ with liquid nitrogen-acetone, and add 30mmol (18.75mL) 1.6M n-butyl Lithium n-hexane solution. Add 30mmol (5.79g) 2-ethylhexyl bromide-5mL Et after 2h 2 O, the reaction mixture was stirred at -78-20°C for 4h. Wash with 100mL deionized water, extract with 50mL ether, and use anhydrous MgSO for the oil layer 4 Dry, remove the solvent and freeze-dry to obtain a 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 ): δ 7.64 (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 (abbreviated as compound 3)

[0019] Add 64m...

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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

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Application Information

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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
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