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Method for preparing blue luminous inorganic-organic composite silicon based materials

An inorganic composite, silicon-based material technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of insufficient mechanical properties and stability, low luminous efficiency, and unstable luminescence of small-molecule luminescent materials, and achieve microscopic shape. The effect of regular appearance, strong operability and quality flexibility

Inactive Publication Date: 2008-07-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, small molecule luminescent materials have insufficient mechanical properties and stability, while polymer luminescent materials have disadvantages of poor luminescent performance.
In particular, blue fluorescent materials have low luminous efficiency, unstable luminescence, and high cost

Method used

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  • Method for preparing blue luminous inorganic-organic composite silicon based materials
  • Method for preparing blue luminous inorganic-organic composite silicon based materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Dissolve 2.25g of salicylaldehyde phenylethylamine in 20ml of anhydrous pyridine, add it into a three-necked flask and heat to reflux. A solution of 2.47 g of triethoxysilylisocyanate in 20 ml of pyridine was then added dropwise. After the dropwise addition, the whole solution was refluxed for 8h under the protection of nitrogen, cooled, and the solvent was distilled off under reduced pressure. The resultant was washed three times with 20 ml of cyclohexane to obtain a pale yellow oily liquid. The resulting oily silicone precursor was dissolved in DMF, and then tetraethylorthosilicate and deionized water were added. The material ratio of the organosilicon precursor, tetraethyl orthosilicate and deionized water is 1:2:4. The whole solution was stirred at room temperature until a solid gel formed. The obtained solid gel was transferred to an oven for aging treatment, the temperature was controlled at 80° C., and the aging time was 10 days. Finally, the obtained hybrid ...

Embodiment 2

[0033] Dissolve 2.25g of salicylaldehyde-p-toluidine in 20ml of anhydrous pyridine, add to a three-necked flask and heat to reflux. A solution of 2.47 g of triethoxysilylisocyanate in 20 ml of pyridine was then added dropwise. After the dropwise addition, the whole solution was refluxed for 8h under the protection of nitrogen, cooled, and the solvent was distilled off under reduced pressure. The resultant was washed three times with 20 ml of cyclohexane to obtain a pale yellow oily liquid. The resulting oily silicone precursor was dissolved in DMF, and then tetraethylorthosilicate and deionized water were added. The material ratio of the organosilicon precursor, tetraethyl orthosilicate and deionized water is 1:2:4. The whole solution was stirred at room temperature until a solid gel formed. The obtained solid gel was transferred to an oven for aging treatment, the temperature was controlled at 60° C., and the aging time was 15 days. Finally, the obtained hybrid material w...

Embodiment 3

[0035]Dissolve 2.68g of salicylaldehyde ethylenediamine in 20ml of anhydrous pyridine, add to a three-necked flask and heat to reflux. A solution of 4.94 g of triethoxysilylisocyanate dissolved in 20 ml of pyridine was then added dropwise. After the dropwise addition, the whole solution was refluxed for 7 hours under the protection of nitrogen, cooled, and the solvent was distilled off under reduced pressure. The resultant was washed three times with 20 ml of cyclohexane to obtain a pale yellow oily liquid. The resulting oily silicone precursor was dissolved in DMF, and then tetraethylorthosilicate and deionized water were added. The material ratio of the organosilicon precursor, tetraethyl orthosilicate and deionized water is 1:4:8. The whole solution was stirred at room temperature until a solid gel formed. The obtained solid gel was transferred to an oven for aging treatment, the temperature was controlled at 70° C., and the aging time was 20 days. Finally, the obtained...

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Abstract

The invention belongs to the luminescent material technology field, and in particular relates to a prepararion method of blue-ray emitting organic-inorganic composite silicon-based material. Firstly, the invention uses the organic synthesis method to graft the organic molecule with Schiff base structure into inorganic silicon framework, and then uses the sol-gel method to obtain xerogel by conducting hydrolysis polycondensation reaction on the precursor of organosilicone; after further drying and aging, the ultraviolet and visibly inspired OLED used nano-blue-ray hybrid material, which has stable chemical and thermodynamic properties and has regular surface appearance, is produced. The method of the invention requires moderate experimental conditions, the composite silicon-based material of the invention can be produced in room temperature dispensing with high-temperature calcinations, the maneuverability is strong, and the reproducibility is well. The obtained product has stable quality, can control the sizes of the grains within nanometer range, and has regular appearance.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a preparation method of a blue-light luminescent organic-inorganic composite silicon-based material. Background technique [0002] The optoelectronic light-emitting technology OLED based on organic materials can be applied to lighting, ultra-thin flat display and organic solid-state lasers, etc., especially the huge potential in display, which has triggered an investment boom of nearly 100 companies and enterprises around the world. Compared with other flat panel display technologies, OLED has the advantages of active light emission, high brightness, high contrast ratio, wide viewing angle, low power consumption, light weight, high efficiency and low production cost. And it does not need to be prepared into crystals. The production and manufacturing process is relatively simple and easy. It is regarded as the most ideal display technology for the next ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/59
Inventor 闫冰刘金亮许帅
Owner TONGJI UNIV
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