Conjugated organic electroluminescent polymer having antioxidant groups and preparation method thereof
A polymer, electroluminescence technology, applied in electroluminescence light sources, chemical instruments and methods, electric light sources, etc., can solve the problems of consumption, easy phase separation, poor stability of blue light materials, etc., and achieve cost reduction and low cost , the effect of improving the service life
Inactive Publication Date: 2008-06-18
DONGGUAN ANWELL DIGITAL MASCH CO LTD
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Problems solved by technology
[0006] Aiming at the problem that the existing technology has the problem of easy phase separation of external antioxidants, resulting in poor stability of blue light materials, we use antioxidants to consume oxygen mainly by using the characteristics of phenolic hydroxyl groups that are easy to be oxidized, and use antioxidants containing three phenolic hydroxyl groups— —Gallic acid, using one of the phenolic groups to form an ether bond with the end group of the side chain of the conjugated polymer to connect to the side chain, while the remaining phenolic group still has a good antioxidant effect
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[0042] The medicines used in the examples of the present invention were purchased from Aldrich Company or Shanghai Traditional Chinese Medicine Group, and the purity was analytically pure.
[0043]Shimadzu IR-Prestige210 was used for infrared spectroscopy; Vario ELIII was used for elemental analysis; Shimadzu DTG-60A was used for glass transition temperature and decomposition temperature; Shimadzu LC-10Advp was used for molecular weight measurement.
[0044] 1 Synthesis of Ar active unit fragments of aromatic heterocycles
[0045]
[0046] The synthetic route of aromatic heterocyclic Ar active unit fragment is as follows figure 1 shown.
[0047] Dissolve substance 1 in anhydrous n-hexane, cool to -78°C with dry ice, slowly add n-butyllithium in an equivalent amount, stir, and maintain -78°C for 1 hour to form monobrominated aryllithium salt, slowly raise the temperature , while feeding dry carbon dioxide gas, reacted for 3 hours, the reaction solution was separated with w...
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Abstract
A preparation of conjugated organic phosphorescence polymer with gallic acid antioxidant belongs to the technical field of organic polymer semiconductor luminescent material. Aromatic ring pendant group such as thiophene, fluorene or carbazole etc. is linked with phenol antioxidant to form monomer with antioxidant pendant group and finally to be polymerized to generate organic luminescent display material with the antioxidant pendant group. The product of the present invention has excellent luminescent performance and anti-oxygen-aging performance; external antioxidant is avoided being used during the processing course; at the same time the antioxidant pendant group has very little influence on the luminescent performance of a main chain; the product of the present invention has good thermal stability and electric charge transmission performance and can be used as organic phosphorescence display material.
Description
technical field [0001] The invention relates to a class of conjugated organic electroluminescent polymers with gallic acid antioxidant groups and a preparation method thereof, belonging to the technical field of organic light-emitting displays. Background technique [0002] Since 1990, when Friend R.H. of Cambridge University and others first developed the organic electroluminescent material (OLED) with polyvinylphenylene structure, it has triggered an upsurge in the research of organic flat panel display materials and devices in the fields of materials science and information technology. Organic luminescent material is a self-luminous, high-brightness, full-color display functional material. It has good film-forming flexibility, light weight, low driving voltage, and fast response speed. It has an attractive prospect in the field of flat panel display. Scientists from various countries and more than 80 large companies are making unremitting efforts in the exploration of its...
Claims
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IPC IPC(8): C09K11/06H05B33/14
Inventor 徐宁王健张永旭郑飞璠
Owner DONGGUAN ANWELL DIGITAL MASCH CO LTD