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
View PDF1 Cites 12 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap