Method for preparing hydroxylquinoline aluminium of blue green type mixing ligand

A technology of hydroxyquinoline and mixed ligands is applied in the field of preparation of aluminum-based organic electroluminescent materials, which can solve the problems of short service life, performance decay, and unstable luminescence performance.

Inactive Publication Date: 2007-07-25
TAIYUAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0006] At present, organic electroluminescent devices have low efficiency, poor stability, fast performance decay, and short service life, mainly due to the preparation of luminescent materials. Most of the existing luminescent materials have low purity and unstable

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  • Method for preparing hydroxylquinoline aluminium of blue green type mixing ligand
  • Method for preparing hydroxylquinoline aluminium of blue green type mixing ligand
  • Method for preparing hydroxylquinoline aluminium of blue green type mixing ligand

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Embodiment Construction

[0155] The present invention will be further described below in conjunction with accompanying drawing:

[0156] As shown in Figure 1, it is a flow chart of the preparation process, which must be carried out in strict accordance with the process parameters and operated in sequence.

[0157] The raw materials of the chemical substances required for the preparation must be strictly selected, and the purity shall be controlled, and no impurities shall intervene to prevent the formation of by-products, so as not to affect the luminescence performance of the product.

[0158] Three-necked flasks, beakers, four-necked flasks, suction filtration flasks, vacuum sublimation tubes, thermometers, stirrers, dropping funnels, water circulation condensers, Buchner funnels, qualitative filter papers, containers, vacuum ovens, and products used in the preparation process The boat, electric heating mantle, etc. should be kept clean, and no impurities should be allowed to intervene, so as not to...

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Abstract

This invention relates to a method for preparing 8-hydroxyquinoline aluminum with blue-green mixed ligands. The method utilizes aluminum sulfate crystals, 8-hydroxyquinoline crystals and acetyl acetone as the raw materials, ethanol as the solvent, hexahydropyridine as the acidity regulator, and deionized water and ethanol as the washing reagents. The method comprises: preparing ethanol solution of aluminum sulfate crystals, ethanol solution of acetyl acetone and hexahydropyridine, and ethanol solution of 8-hydroxyquinoline crystals and hexahydropyridine, synthesizing, vacuum-filtering, washing, filtering, vacuum-drying, and vacuum-subliming to obtain light green ligands. The introduction of acetyl acetone as a ligand can improve the luminescent performance and intensity, as well as the luminescent brightness by 80%. The method has such advantages as simple process, few equipments, low cost, abundant raw materials, high product purity (99.6%) and high yield (61.4%).

Description

technical field [0001] The invention relates to a preparation method of 8-hydroxyquinoline aluminum alloy with blue-green mixed ligands, and belongs to the technical field of preparation methods and applications of aluminum-based organic electroluminescent materials. Background technique [0002] Organic electroluminescence can realize full-color display from blue light region to red light region, low driving voltage, high luminous brightness and luminous efficiency, wide vision, fast response speed, relatively simple manufacturing process, and can realize flexible display and many other advantages. Its material selection range is wide and there are many varieties. [0003] Organic electroluminescent materials have high-efficiency fluorescence, good conductivity, semiconductor characteristics, good film-forming properties, strong stability of the material itself, and good mechanical processing performance. [0004] In recent years, organic electroluminescent diodes (OLEDs) ...

Claims

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Application Information

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IPC IPC(8): C07F5/06C09K11/06
Inventor 许并社陈柳青刘旭光周禾丰许慧侠王华王艳丽贾虎生
Owner TAIYUAN UNIV OF TECH
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