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Method for preparing rare-earth doped lanthanum phosphate nano luminous particles

A rare earth doped and luminescent particle technology is applied in the field of preparation of rare earth doped lanthanum phosphate, which can solve problems such as unreported research, and achieve the effects of simple synthesis process, small size and good luminous performance.

Inactive Publication Date: 2008-01-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no report on rare earth-doped phosphate nanoluminescent particles in microreactors

Method used

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  • Method for preparing rare-earth doped lanthanum phosphate nano luminous particles
  • Method for preparing rare-earth doped lanthanum phosphate nano luminous particles

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Weigh 1.949g La(NO 3 ) 3 ·6H 2 O, added to 100mL ethylene glycol solution, magnetically stirred until dissolved; weighed 0.176gEu 2 o 3 , 0.278g concentrated HNO 3 Added to the above solution, magnetically stirred until dissolved, to obtain 3+ (Ln=Eu, La) 0.05mol / L ethylene glycol reaction stock solution, wherein Eu 3+ : La 3+ =1:9 (molar ratio); Weigh 0.780gNaH 2 PO 4 2H 2 O was added to 100mL ethylene glycol solution, and magnetically stirred until dissolved to obtain 0.05mol / L NaH 2 PO 4 Ethylene glycol reaction stock solution. The two reaction solutions were added to two equal-diameter syringes, and sealed with silicon ester to prevent leakage. Push the reaction solution into the micro-mixer with a micro-propellant pump, and the solution enters the micro-tube after mixing, and reacts in a constant temperature oil bath at 80°C. After the reaction is completed, the product is received with a sample bottle to obtain LaPO 4 :Eu 3+ Ethylene glycol solution of...

Embodiment 2

[0044] Weigh 0.866g La(NO 3 ) 3 ·6H 2 O, added to 100mL ethylene glycol solution, stirred magnetically until dissolved; weighed 0.977gCe(NO 3 ) 3 ·6H 2 O, 0.340gTb(NO 3 ) 3 ·6H 2 O, add the above solution, stir magnetically until dissolved, and get the solution containing Ln 3+ (Ln=La, Ce, Tb) 0.05mol / L ethylene glycol reaction stock solution, wherein La 3+ : Ce 3+ :Tb 3+ =8:9:3 (molar ratio). Weigh 0.780gNaH 2 PO 4 2H 2 O was added to 100mL ethylene glycol solution, and magnetically stirred until dissolved to obtain 0.05mol / L NaH 2 PO 4 Ethylene glycol reaction stock solution. Then add the two reaction liquids into two equal-diameter syringes, seal with silicon ester to prevent liquid leakage, push the reaction liquid into the micro-mixer with a micro-push pump and mix it into a micro-tube, and carry out in a constant temperature oil bath at 80°C. Reaction, receive the product with a sample bottle after the end of the reaction, and obtain Ce 3+ , Tb 3+ dope...

Embodiment 3

[0046] Weigh 1.019g La(NO 3 ) 3 ·6H 2 O, added to 100mL ethylene glycol solution, stirred magnetically until dissolved; weighed 1.149gCe(NO 3 ) 3 ·6H 2 O, added to the above solution, magnetically stirred until dissolved, to obtain 3+ (Ln=La, Ce) 0.05mol / L ethylene glycol reaction stock solution, wherein La 3+ : Ce 3+ =8:9 (molar ratio). Weigh 0.780gNaH 2 PO 4 2H 2 O was added to 100mL ethylene glycol solution, stirred magnetically until dissolved to obtain 0.05mol / L NaH 2 PO 4 Ethylene glycol reaction stock solution. Then add the two reaction liquids into two equal-diameter syringes, seal them with silicon ester to prevent leakage, push the reaction liquids into the micro-mixer with a micro-push pump and mix them into micro-tubes, and carry out in a constant temperature oil bath at 100°C. Reaction, receive the product with a sample bottle after the end of the reaction, and obtain Ce 3+ doped LaPO 4 Ethylene glycol solution of luminescent nanoparticles. Acetone...

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Abstract

The invention relates to a method for preparing luminescent nano-particles of rare earth doped with lanthanum phosphate, comprising the following steps: preparing stock solutions including lanthanum nitrate polyol solution doped with rare earth element of Ln and polyol solution of NaH2PO4-2H2O; mixing the stock solutions in a micro mixer and heating the mixture in oil under constant temperature after the mixture enters the micro-channels, after which the mixture will react to produce polyol solution of luminescent nano-particles of rare earth doped with lanthanum phosphate; obtaining luminescence nano-particles of rare earth doped with lanthanum phosphate by extracting, washing and centrifugal separation. With simple technology and easy for batch production, the obtained nano-particles are provided with small particles, good dispersibility and fluorescence.

Description

technical field [0001] The invention belongs to the preparation method of nano-luminescent particles, in particular to a rare earth-doped lanthanum phosphate (LaPO 4 :Ln 3+ ) preparation method. Background technique [0002] The labeling technology of biomaterials is a key technology that affects the sensitivity of clinical detection and biological tissue observation. In recent years, the use of fluorescent materials as markers has become a research hotspot, and some progress has been made. [0003] Commonly used fluorescent labels include organic fluorescent materials, luminescent quantum dots, and silicate nanoparticles. Inorganic nano-fluorescent materials represented by quantum dots have optical properties such as good photostability, wide excitation spectrum and narrow emission spectrum, separation of excitation spectrum and emission spectrum, and tunable wavelength of emission spectrum. Therefore, it can be used to replace the application of organic fluorescent mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/81
Inventor 王宏志石国英宋雪霞李耀刚
Owner DONGHUA UNIV
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