Core-shell structured fluorescence granular material with adjustable luminescence and preparation method thereof

A technology of fluorescent particles and luminescent materials, applied in the field of rare earth compound fluorescent materials, can solve the problems of difficult preparation methods, unsuitable for large-scale production, etc., and achieve the effects of important application value, simple preparation process, stable and adjustable light emission

Inactive Publication Date: 2008-10-29
ZHEJIANG UNIV
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Han, M.; Gao, X.; Su, J.Z.; Nie S., Quantum-dot-tagged microbeads for multiplexed optical coding of biomolecules, NATURE BIOTECHNOLOGY, 2001, 19:631-635., in the above two types of core-shell structures , the outer shell is non-luminescent auxil

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
  • Core-shell structured fluorescence granular material with adjustable luminescence and preparation method thereof
  • Core-shell structured fluorescence granular material with adjustable luminescence and preparation method thereof
  • Core-shell structured fluorescence granular material with adjustable luminescence and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (Y 2 o 3 :Eu):LnPO 4 The molar ratio is 1:1 core-shell structure fluorescent particle material preparation

[0021] ●Add 0.25molLa 2 o 3 , 0.30molTb (NO 3 ) 3 ·6H 2 O, 0.15molCe(NO 3 ) 3 ·6H 2 O was dissolved in 0.01M dilute nitric acid to prepare a rare earth ion solution.

[0022] ●Respectively take an appropriate amount from the rare earth ion solution prepared in the first step above, and prepare 30mL of rare earth ion mixed solution, the total amount of rare earth ion in the made rare earth ion mixed solution is 2.5mmol, wherein La 3+ 、Ce 3+ , Tb 3+ The amounts of the substances were 1.425mmol, 0.725mmol, 0.35mmol, respectively. And adjust the pH value to 3.0-4.0 with hydrochloric acid, and the pH value is measured by precision pH test paper.

[0023] ●Weigh 2.5mmol sodium tripolyphosphate, dissolve it in 20mL water, adjust the pH value of the solution to about 3.0 with 6M and 1M hydrochloric acid successively, and prepare sodium tripolyphosphate solu...

Embodiment 2-4

[0030] (Y 2 o 3 :Eu):LnPO 4 The molar ratio of 1: 0.4, 1: 0.8, 1: 1, 1: 2 core-shell structure fluorescent particle material preparation refers to the preparation method of Example 1, the difference is (Y 2 o 3 :Eu):LnPO 4 The molar ratios are 1:0.4, 1:0.8, 1:2, and the size of the obtained core-shell structure fluorescent particle material is 6-16 μm.

[0031] Excite Y with UV light (254nm) 2 o 3 : Eu-LnPO 4 Fluorescent particles with core-shell structure (see attached image 3 ), the samples from left to right in the figure are: pure Y 2 o 3 : Eu, Y 2 o 3 : Eu-LnPO 4 Core-shell particles (from left to right (Y 2 o 3 :Eu):LnPO 4 The molar ratios are 1:0.4, 1:0.8, 1:1, 1:2), pure LnPO 4 . found that with (Y 2 o 3 :Eu):LnPO 4 As the molar ratio value decreases, the green component of the emitted light of the core-shell structure fluorescent particles gradually increases, and the red component gradually decreases. By adjusting the ratio of the core layer and ...

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 relates to a Y2O3:Eu-LnPO4 fluorescent particle material of kernel-housing structure with adjustable light emission. The kernel material is selected from a Y2O3:Eu fluorescent material capable of emitting red light, and the housing material is selected from an LnPO4 fluorescent material capable of emitting green light, wherein the kernel has a size within 4 to 8 mum, and the molar ratio of the Y2O3:Eu material to the LnPO4 material is 1:0.4 to 1:2. The preparation method comprises the following steps: adding a rear earth ion mixture solution for preparing the housing material into a sodium tripolyphosphate solution dropwise, adding the Y2O3:Eu micrometer particles as the kernel, growing the LnPO4 housing layer on the kernel of the Y2O3:Eu micrometer particles, cooling, filtering, cleaning, vacuum drying and collecting the product. The preparation process is simple, and the Y2O3:Eu-LnPO4 fluorescent particle material has stable and adjustable light emission.

Description

technical field [0001] The invention relates to a rare earth compound fluorescent material, in particular to a Y with adjustable luminescence 2 o 3 : Eu-LnPO 4 Fluorescent particle material with core-shell structure and preparation method thereof. Background technique [0002] Among fluorescent materials, rare earth compound fluorescent materials have attracted much attention because of their wide variety and excellent performance. In the rare earth compound fluorescent materials, the research on the multi-component rare earth oxide matrix system is dominant, Martinez-Rubio, M.I.; Ireland, T.G.; Fern, G.R.; Silver, J.; Snowden, M.J., A New Application for Microgels: Novel Method for the Synthesis of Spherical Particles of the Y2O3: Eu Phosphor Using a Copolymer Microgel of NIPAM and Acrylic Acid, LANGMUIR, 2001, 17(22): 7145-7149, but the color of light emitted by these rare earth fluorescent materials is often single , Ronda, C.R.; Jüstel T.; Nikol H., Rare earth phosph...

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
IPC IPC(8): C09K11/02C09K11/81
Inventor 唐睿康李玲
Owner ZHEJIANG UNIV
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