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Method for preparing water-soluble NaYF4 up-conversion luminescent material

A luminescent material, water-soluble technology, applied in luminescent materials, chemical instruments and methods, rare earth metal compounds, etc., can solve problems such as difficult to disperse, achieve the effects of pollution-free by-products, low equipment requirements, and easy scale-up

Inactive Publication Date: 2010-12-29
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface of UCNPs obtained by the current method is usually hydrophobic organic ligands, making them difficult to disperse in water, requiring further surface modification for biomarkers

Method used

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  • Method for preparing water-soluble NaYF4 up-conversion luminescent material
  • Method for preparing water-soluble NaYF4 up-conversion luminescent material
  • Method for preparing water-soluble NaYF4 up-conversion luminescent material

Examples

Experimental program
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Effect test

Embodiment 1

[0019] (A) Weigh 25mmol of NaF solid in a beaker, then add 20mL of ethylene glycol, dissolve and stir under ultrasound for 20 minutes at room temperature; (B) Add 1g of polyvinylpyrrolidone K-30 to 20mL of ethylene glycol (PVP), ultrasonic dissolving and stirring at room temperature for 20 minutes; after the dispersion is complete, add 3mmol solid LnCl 3 (Ln=80mol%Y+18mol%Yb+2mol%Er), dissolve with ultrasonic stirring for about 20 minutes. Under stirring conditions, A was added to B, followed by ultrasonic stirring for 30 minutes. Finally, it was transferred to an autoclave and reacted at 140°C for 12 hours. After the reaction, the water-soluble NaYF with adjustable crystal phase and luminescence can be obtained by centrifugal drying 4 Up-conversion luminescent material.

Embodiment 2

[0021] (A) Weigh 25mmol of NaF solid in a beaker, then add 20mL of ethylene glycol, dissolve and stir under ultrasound for 20 minutes at room temperature; (B) Add 1g of polyvinylpyrrolidone K-30 to 20mL of ethylene glycol (PVP), ultrasonic dissolving and stirring at room temperature for 20 minutes; after the dispersion is complete, add 3mmol solid LnCl 3 (80mol% Y+18mol% Yb+2mol% Er), dissolve with ultrasonic stirring for about 20 minutes. Under stirring conditions, A was added to B, followed by ultrasonic stirring for 30 minutes. Finally, it was transferred to an autoclave and reacted at 180°C for 12 hours. After the reaction, the water-soluble NaYF with adjustable crystal phase and luminescence can be obtained by centrifugal drying 4 Up-conversion luminescent material.

Embodiment 3

[0023] (A) Weigh 25mmol of NaF solid in a beaker, then add 20mL of ethylene glycol, dissolve and stir under ultrasound for 20 minutes at room temperature; (B) Add 1g of polyvinylpyrrolidone K-30 to 20mL of ethylene glycol (PVP), ultrasonic dissolving and stirring at room temperature for 20 minutes; after the dispersion is complete, add 3mmol solid LnCl 3 (80mol% Y+18mol% Yb+2mol% Er), dissolve with ultrasonic stirring for about 20 minutes. Under stirring conditions, A was added to B, followed by ultrasonic stirring for 30 minutes. Finally, it was transferred to an autoclave and reacted at 220°C for 12 hours. After the reaction, the water-soluble NaYF with adjustable crystal phase and luminescence can be obtained by centrifugal drying 4 Up-conversion luminescent material.

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Abstract

The invention relates to a method for preparing a water-soluble NaYF4 up-conversion luminescent material, which comprises the following steps of: (1) adding 1 to 30mmol of NaF solid into 3 to 20mL of ethylene glycol to obtain solution A; (2) adding 0.1 to 2g of polyvinylpyrrolidone into the 3 to 20mL of ethylene glycol, dispersing, and adding 0.05 to 5mmol of solid LnCl3 to obtain solution B; and (3) adding A into B, performing ultrasonic stirring for 30 minutes, transferring to a high pressure reactor, reacting at the temperature of between 140 and 240 DEG C for 1 to 48 hours, and centrifugally drying to obtain the water-soluble NaYF4 up-conversion luminescent material. The method has the characteristics of low reaction temperature, short reaction time, low requirement on equipment, no harm of byproducts, simpler operation, and easy industrialization; and the prepared material has the advantages of controllable crystalline phase, adjustable luminescence, and good application prospect.

Description

Technical field [0001] The invention belongs to the field of preparation of rare earth up-conversion luminescent nano materials, and particularly relates to a water-soluble NaYF 4 Preparation method of up-conversion luminescent material. Background technique [0002] The rapid development of life sciences is inseparable from the application of new technologies and methods. At present, people have a strong interest in the analysis and detection of intracellular and extracellular substances and early diagnosis of diseases. Many researchers have been committed to the research and development of new analytical techniques. Fluorescent labeling as a non-radioactive biomarking technology has received extensive attention and has achieved rapid development. Currently, there are mainly three types of materials used as luminescent markers: organic fluorescent materials, semiconductor quantum dots and rare earth upconversion luminescent nanomaterials (UCNPs). Compared with organic dyes and...

Claims

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Application Information

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IPC IPC(8): C01F17/00C09K11/85
Inventor 胡俊青宋岳林田启威陈志钢邹儒佳吴江红
Owner DONGHUA UNIV
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