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Method for preparing 8-hydroxyquinoline aluminium/silicone oxide composite luminescent material

A technology of aluminum hydroxyquinoline and luminescent materials, which is applied in luminescent materials, chemical instruments and methods, and illuminated marks, and can solve problems such as poor chemical stability, device aging, and shortened service life, and achieve simple processes and high luminous intensity. High, strong chemical stability

Inactive Publication Date: 2006-07-19
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its processability is not good, and it is mainly based on vacuum evaporation deposition. The device construction process is complicated and the cost is high. At the same time, its chemical stability is poor, it is sensitive to water and oxygen, and it is easy to cause device aging and shorten the service life.

Method used

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  • Method for preparing 8-hydroxyquinoline aluminium/silicone oxide composite luminescent material
  • Method for preparing 8-hydroxyquinoline aluminium/silicone oxide composite luminescent material
  • Method for preparing 8-hydroxyquinoline aluminium/silicone oxide composite luminescent material

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Experimental program
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Effect test

Embodiment 1

[0023] Through organic synthesis, graft organic functional groups on 8-hydroxyquinoline, and then react with silane coupling agent to generate silylated 8-hydroxyquinoline ligand (SiHQ) and make dimethylformamide (DMF) solution, Add tetraethyl orthosilicate (TEOS), water and aluminum ions, SiHQ: TEOS = 1: 50, and magnetically stir to generate an organic-inorganic composite sol. After the sol is stable, dry and form it to obtain 8-hydroxyquinoline compound Aluminum-silicon oxide organic-inorganic composite luminescent material bulk gel. The material properties are shown in Table 1.

Embodiment 2

[0025] Example 2: The formulation ratio is SiHQ:TEOS=1:10, and the material properties are shown in Table 1.

Embodiment 3

[0026] Example 3: The formulation ratio is SiHQ:TEOS=1:20, and the material properties are shown in Table 1.

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Abstract

The low-cost preparation method for aluminum 8-hydroxyquinoline (HQ) / SiO2 composite luminescent material used in luminescent display device comprises: (1) drafting organic active group for 8-HQ functional modification; (2) dissolving the modified 8-HQ in ethanol, adding silane coupling agent to prepare SiHQ; (3) preparing DMF solution with SiHQ; adding TEOS, deionized water and Al3+ solution to stir, dry and obtain the target. The product has high luminous intensity with emission spectrum in blue light range, benefits to construct the OLED device and prolong its lifetime as strong chemical stability to water and oxygen. This invention is fit to large-scale production.

Description

technical field [0001] The invention relates to a preparation method of an 8-hydroxyquinoline aluminum / silicon oxide composite light-emitting material used for a light-emitting display device. It belongs to the field of luminescent materials. Background technique [0002] Organic electroluminescent display technology (OLED), whose basic structure is a light-emitting device constructed by sandwiching organic light-emitting materials between two electrodes, has light weight, fast response, high brightness, impact resistance, low voltage, and viewing angle As the third-generation display technology after cathode ray tube (CRT) and liquid crystal display (LCD), it has developed rapidly in recent years and has been commercialized in many fields. 8-Hydroxyquinoline aluminum (AlQ 3 ), as the most important material in the field of organic electroluminescent display, it is mainly used for light emitting materials and electron transport materials, and has a large luminous intensity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/59G09F13/20
Inventor 曾洪宇施剑林
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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