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4-hydroxy coumarin intercalated hydrotalcite blue-light composite luminescence material and preparation method thereof

A technology of hydroxycoumarin and luminescent materials, which is applied in the directions of luminescent materials, chemical instruments and methods to achieve the effect of improving fluorescence performance

Active Publication Date: 2012-11-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on introducing 4-hydroxycoumarin neutral molecules and surfactant molecules into the layered material hydrotalcite layer has not been reported so far.

Method used

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  • 4-hydroxy coumarin intercalated hydrotalcite blue-light composite luminescence material and preparation method thereof
  • 4-hydroxy coumarin intercalated hydrotalcite blue-light composite luminescence material and preparation method thereof
  • 4-hydroxy coumarin intercalated hydrotalcite blue-light composite luminescence material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Weigh 0.6410g Mg(NO 3 ) 2 ·6H 2 O and 0.4680g Al(NO 3 ) 3 9H 2 O dissolved in 50ml to remove CO 2 , deionized water, to obtain solution A, Mg 2+ / Al 3+ The molar ratio is 2:1, Mg 2+ The concentration is 0.05M;

[0024] 2. Dissolve 0.2027g of 4-hydroxycoumarin and 0.5478g of potassium perfluorohexanesulfonate in 50ml of a mixed solution of ethanol and water with a volume ratio of 1:1 to obtain solution B, 4-hydroxycoumarin and perfluorohexanesulfonate Potassium hexanesulfonate molar ratio is 1:1;

[0025] 3. Mix solution A and solution B to obtain solution C, and pour solution C into a four-necked flask;

[0026] 4. Dissolve 0.6g NaOH in 40ml to remove CO 2 , deionized water, the NaOH solution was passed through a constant pressure funnel, and under the condition of nitrogen protection, slowly added dropwise to the four-necked flask equipped with solution C until the pH value was 9.5 to obtain slurry D, which was transferred to a 100ml high-pressure The re...

Embodiment 2

[0031] 1. Weigh 0.641g Mg(NO 3 ) 2 ·6H 2 O and 0.468g Al(NO 3 ) 3 9H 2 O dissolved in 50ml to remove CO 2 , deionized water, to obtain solution A, Mg 2+ / Al 3+ The molar ratio is 2:1, Mg 2+ The concentration is 0.05M;

[0032] 2. Dissolve 0.0676g of 4-hydroxycoumarin and 0.5478g of potassium perfluorohexanesulfonate in 50ml of a mixed solution of ethanol and water with a volume ratio of 1:1 to obtain solution B, 4-hydroxycoumarin and Al 3+ The molar ratio is 0.3333:1;

[0033] 3. Mix solution A and solution B to obtain solution C, and pour solution C into a four-necked flask;

[0034] 4. Dissolve 0.6g NaOH in 20ml to remove CO 2 , deionized water, the NaOH solution was passed through a constant pressure funnel, and under the condition of nitrogen protection, slowly added dropwise to the four-necked flask equipped with solution C until the pH value was 10 to obtain slurry D, which was transferred to a 100ml high-pressure The reaction kettle was placed in an oven at ...

Embodiment 3

[0039] 1. Weigh 1.154g Mg(NO 3 ) 2 ·6H 2 O and 0.563g Al(NO 3 ) 3 9H 2 O dissolved in 50ml to remove CO 2 , deionized water, to obtain solution A, Mg 2+ / Al 3+ The molar ratio is 3:1, Mg 2+ The concentration is 0.09M;

[0040] 2. Dissolve 0.243g of 4-hydroxycoumarin and 0.658g of potassium perfluorohexanesulfonate in 50ml of a mixed solution of ethanol and water with a volume ratio of 1:1 to obtain solution B;

[0041] 3. Mix solution A and solution B to obtain solution C, and pour solution C into a four-necked flask;

[0042] 4. Dissolve 0.8g NaOH in 40ml to remove CO 2 , deionized water, the NaOH solution was passed through a constant pressure funnel, and under the condition of nitrogen protection, slowly added dropwise to the four-necked flask equipped with solution C until the pH value was 11 to obtain slurry D, which was transferred to 100ml of high pressure The reaction kettle was placed in an oven at 140°C for 36 hours;

[0043] 5. Use the reaction product o...

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Abstract

The invention discloses a 4-hydroxy coumarin intercalated hydrotalcite blue-light composite luminescence material and a preparation method of the 4-hydroxy coumarin intercalated hydrotalcite blue-light composite luminescence material, belonging to the technical field of an inorganic / organic composite luminescence material. A surfactant with the molecular length similar with that of a neutral molecule of 4-hydroxy coumarin is selected, and a supermolecular composite luminescence material which is uniformly dispersed between hydrotalcite layers is obtained by co-intercalation of a co-precipitation method. According to the invention, space area-restricting action of a hydrotalcite stratified material and interaction between a subject and an object are utilized; immobilization of the neutral molecule of the 4-hydroxy coumarin is achieved; meanwhile, the conversion of emission into blue-light emission is achieved; and the fluorescence of a neutral fluorescent micromolecule is effectively improved, and a theoretical research foundation is provided for application of the hydrotalcite into a solid luminescence apparatus.

Description

technical field [0001] The invention belongs to the technical field of inorganic / organic composite luminescent materials, in particular to a 4-hydroxycoumarin-intercalated hydrotalcite blue-light composite luminescent material and a preparation method thereof. Background technique [0002] 4-Hydroxycoumarin neutral molecule is a kind of laser dye. Since Kodak Company of the United States doped this dye into the host material for OLED research, it has been widely used as a green photoluminescent material with excellent performance. In terms of multi-color and large-screen display and lighting devices. Especially in the research of organic light-emitting diode (OLED) devices, because its fluorescence quantum efficiency reaches almost 100%, it has been used to make high-performance green organic electroluminescent devices. Among organic electroluminescent materials, red, green, and blue primary color luminescent materials can produce light of many colors in different proportio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06
Inventor 陆军李震卫敏段雪
Owner BEIJING UNIV OF CHEM TECH
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