Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyacid micro/nano-crystal fluorescent film with crystal orientation and preparation method thereof

A technology of nanocrystals and crystal plane orientation, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of loss of film order, inability to meet the thickness and quality of luminescent films, and difficulty in preparing high-quality luminescent films. Achieve the effects of non-toxic cost, simple preparation process and process equipment, and easy access to raw materials

Inactive Publication Date: 2015-05-27
BEIJING UNIV OF CHEM TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since these methods are prepared at the molecular level, the order of the film is often lost due to inevitable defects during the preparation process, and it is difficult to prepare a high-quality luminescent film with a thickness of microns, so it still cannot meet the requirements of luminescence. Actual requirements of film thickness and film quality

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
  • Polyacid micro/nano-crystal fluorescent film with crystal orientation and preparation method thereof
  • Polyacid micro/nano-crystal fluorescent film with crystal orientation and preparation method thereof
  • Polyacid micro/nano-crystal fluorescent film with crystal orientation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Preparation of polyacid micro-nano crystals: prepare 0.005mol / L Na 9 wxya 10 o 36 32H 2 20ml of O solution and 20ml of 0.045mol / L silver nitrate solution, under the condition of 75℃ oil bath, slowly add the silver nitrate solution dropwise into the vigorously stirred Na 9 wxya 10 o 36 32H 2 O solution, centrifugal separation, the obtained product is polyacid micro-nano crystal Ag with hexagonal morphology 9 wxya 10 o 36 ;

[0020] (2) Preparation of polyacid micro-nano crystal fluorescent film with crystal plane orientation: first prepare a polyethyleneimine solution with a molecular weight of 1% and a molecular weight of 55000; the prepared polyethyleneimine solution is spin-coated (2000rpm , 1min) to the surface of a clean glass sheet, the area of ​​the glass sheet is 24×24mm 2 , with a thickness of 2mm; then put the polyacid micro-nano crystals prepared in step (1) on the surface of a glass sheet spin-coated with polyethyleneimine, rub and press for 60s...

Embodiment 2

[0023] (1) Preparation of polyacid micro-nano crystals: prepare 0.010mol / L Na 9 wxya 10 o 36 32H 2 O solution 20ml and 0.090mol / L silver nitrate solution 20ml, under the condition of 75°C oil bath, slowly drop the silver nitrate solution (40min) into the vigorously stirred (550rpm) Na 9 wxya 10 o 36 32H 2 O solution, centrifugal separation, the obtained product is polyacid micro-nano crystal Ag with hexagonal morphology 9 wxya 10 o 36 ;

[0024] (2) Preparation of multi-acid micro-nano crystal fluorescent film with crystal plane orientation: first prepare a polyethyleneimine solution with a molecular weight of 2% and a molecular weight of 55000; spin-coat 1ml of the prepared polyethyleneimine solution ( 2500rpm, 1min) to ITO glass (18×18mm 2 ) surface; then put the multi-acid micro-nano crystals prepared in step (1) on the ITO glass surface spin-coated with polyethyleneimine, and rub and press for 40s to prepare poly-acid micro-nano crystals with crystal plane orient...

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

PropertyMeasurementUnit
fluorescence lifetimeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a polyacid micro / nano-crystal fluorescent film with crystal orientation and a preparation method thereof and belongs to the technical field of light-emitting film preparation. The method disclosed by the invention comprises the following steps: firstly, reacting polyacid Na9EuW10O36.nH2O with large-diameter univalent counter cations Ag+ to generate polyacid insoluble salt Ag9EuW10O36 micro / nano crystals with extremely-low solubility, wherein the micro / nano crystals have the characteristics of uniform size and hexagonal shape, clear internal structure, extremely low solubility, high fluorescence life, high light-emitting efficiency, high quantum yield, and the like; and then, with the obtained polyacid micro / nano-crystals as basic modules, and rubbing and pressing a solid base coated with polyelectrolyte, so that the micro / nano-crystals are finally assembled into a rare-earth polyacid micro / nano-crystal fluorescent film with crystal orientation and a certain thickness on the solid base coated with polyelectrolyte. According to the preparation method, the orderly assembling of rare-earth polyacid micro / nano-crystals is realized for the firs time.

Description

technical field [0001] The invention belongs to the technical field of luminescent film preparation, in particular to a multi-acid micro-nano crystal fluorescent film with crystal plane orientation and a preparation method thereof. Background technique [0002] Rare earth polyoxometalates have practical or potential applications in the fields of catalysis, biology, electrodes, medicine, and luminescent material science. Among them, the molecular formula is Na 9 wxya 10 o 36 ·nH 2 The polyacid of O is currently known as the polyacid with the highest fluorescence quantum yield and the longest fluorescence lifetime with a sharp linear emission spectrum. It is important in cathode ray tubes, photoluminescence, electroluminescence and field emission display devices potential application value. But since Na 9 wxya 10 o 36 ·nH 2 O has a large number of crystallization solvent water molecules, and is easily soluble in water, so it is not suitable for direct preparation of l...

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 Patents(China)
IPC IPC(8): C09K11/78
Inventor 周云山张锐张立娟
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com