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

A preparation method of flat hexagonal rare earth doped up-conversion material

A rare earth doping and conversion material technology, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of increasing the aspect ratio of hexagonal phase up-conversion materials, achieve large structural stability constants, increase fluorescence efficiency, and improve uniformity Effect

Active Publication Date: 2020-04-10
SHANGHAI JIAOTONG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrothermal method tends to increase the aspect ratio of the hexagonal phase upconversion material, resulting in larger-sized products.

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
  • A preparation method of flat hexagonal rare earth doped up-conversion material
  • A preparation method of flat hexagonal rare earth doped up-conversion material
  • A preparation method of flat hexagonal rare earth doped up-conversion material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] In one embodiment of the present invention, the preparation method of the flat hexagonal rare earth doped up-conversion material mainly includes the following steps:

[0036] (1): According to the molar ratio Y:Er:Yb=88:10:2, weigh the rare earth oxide (Y 2 o 3 、Er 2 o 3 , Yb 2 o 3 ) was added to the dilute hydrochloric acid solution, stirred until completely dissolved, the excess hydrochloric acid was removed by rotary evaporation, and naturally cooled to room temperature to obtain the rare earth chloride (YCl 3 , ErCl 3 , YbCl 3 ) reserve liquid;

[0037] (2): adding a surfactant solution and a morphology control agent solution to the rare earth chloride stock solution prepared in step (1), stirring fully;

[0038] (3): Slowly drop into the sodium fluoride solution, fully stir the reaction, and prepare the rare earth precursor;

[0039] (4): The rare earth precursor prepared in step (3) is placed in a reaction kettle for hydrothermal reaction. After the react...

Embodiment 1

[0052] A method for preparing a flat hexagonal rare earth-doped up-conversion material, comprising the following steps:

[0053] (1) Weigh the rare earth oxide (Y 2 o 3 , Yb 2 o 3 and Er 2 o 3 ) was added to the dilute hydrochloric acid solution, stirred until the rare earth oxide was completely dissolved, rotatively evaporated to remove excess hydrochloric acid, and naturally cooled to room temperature to prepare the rare earth chloride LnCl 3 (including YCl with a molar ratio of 88:10:2 3 , YbCl 3 and ErCl 3 ) stock solution, the molar concentration is 0.2mol / L;

[0054] (2) According to LnCl 3 : DDBAC: EDTA is 1: 1: 1, adding the DDBAC solution and the EDTA solution that the molar concentration is 0.4mol / L to the rare earth chloride stock solution that step (1) makes, and stir 10min;

[0055] (3) According to LnCl 3 : NaF is 1: 12 in the mixed solution of the additive that step (2) makes and rare earth chloride stock solution, slowly drop into sodium fluoride sol...

Embodiment 2

[0060] A method for preparing a flat hexagonal porous rare earth-doped up-conversion material, comprising the following steps:

[0061] (1) Weigh the rare earth oxide (Y 2 o 3 , Yb 2 o 3 and Er 2 o 3 ) was added to the dilute hydrochloric acid solution, stirred until the rare earth oxide was completely dissolved, rotatively evaporated to remove excess hydrochloric acid, and naturally cooled to room temperature to prepare the rare earth chloride LnCl 3 (including YCl with a molar ratio of 88:10:2 3 , YbCl 3 and ErCl 3 ) stock solution, the molar concentration is 0.1mol / L;

[0062] (2) According to LnCl 3 : DDBAC: EDTA is 1: 1: 1, adding the DDBAC solution and the EDTA solution that the molar concentration is 0.4mol / L to the rare earth chloride stock solution that step (1) makes, and stir 10min;

[0063] (3) According to LnCl 3 : NaF is 1: 12 in the mixed solution of the additive that step (2) makes and rare earth chloride stock solution, slowly drop into sodium fluor...

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 method for preparing a flat hexagonal prism rare-earth doped up-conversion material. The method comprises the following steps: (1) putting a rare-earth oxide into a dilutedhydrochloric acid solution, stirring until complete dissolution, removing excessive hydrochloric acid, and cooling so as to obtain a rare-earth chloride storage liquid for later use; (2) putting a surfactant and a morphology control agent into the rare-earth chloride storage liquid prepared in the step (1), and sufficiently stirring; (3) dropping a sodium fluoride solution, and performing a stirring reaction so as to obtain a rare-earth precursor; (4) finally, putting the rare-earth precursor prepared in the step (3) into a reaction kettle, performing a hydrothermal reaction, separating reaction products, cleaning, and drying, so as to obtain a target product. Compared with the prior art, the method has a function that a flat hexagonal prism beta-NaYF4:Er3+ / Yb3+ material which is smooth insurface and uniform in morphology is prepared through hydro-thermal synthesis for a first time, and the product is complete in morphology, stable in property, uniform in size, large in application value, and the like.

Description

technical field [0001] The invention relates to the field of inorganic fluorescent materials, in particular to a method for preparing flat hexagonal rare earth-doped up-conversion materials. Background technique [0002] Bio-optical imaging refers to the method of using optical detection means combined with optical detection molecules to image cells or tissues or even organisms to obtain biological information. Commonly used luminescent materials include organic dyes, quantum dots, carbon dots, and up-conversion materials. Among them, due to the advantages of strong photostability, narrow emission band, long fluorescence lifetime, high chemical stability, and low potential biological toxicity, up-conversion luminescent materials can be used as fluorescent probes to target the position of cancer cells in vivo and realize Accurate positioning and imaging, so it has broad application prospects. [0003] Improving the luminescence efficiency of upconverting fluorophores has be...

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): C09K11/85
CPCC09K11/7773
Inventor 高国漆文
Owner SHANGHAI JIAOTONG UNIV
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