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Preparation method of up-conversion fluorescent material

A technology of fluorescent materials and raw materials, applied in the field of preparation of rare earth up-conversion luminescent nanomaterials, which can solve problems such as experimental operation hazards

Active Publication Date: 2013-03-20
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Pyrolysis is a very effective method to obtain monodisperse nanocrystals, NaREF of monodisperse cubic and hexagonal phases 4 (RE=Pr~Lu) nanoparticles can be obtained by pyrolyzing CF in high-boiling point organic solvents. 3 COONa and RE(CF 3 COO) 3 However, this method will produce some exhaust gas, and the high temperature of pyrolysis up to 300 ° C also brings certain dangers to the experimental operation

Method used

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  • Preparation method of up-conversion fluorescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] (i) prepare an aqueous solution comprising Y, Yb, Er, Mn, including 1.0 mmol of Ln (NO 3 ) 3 (Ln=0.8mmol Y+0.18mmol Yb+0.02mmol Er), Mn: Y=30% (mol percentage);

[0073] (ii) Take sodium hydroxide (0.3g), double-distilled water (2mL), ethanol (10mL) and oleic acid (5mL), and mix them uniformly to obtain a mixed solution;

[0074] (iii) adding the solution of step (i) to the mixed solution of step (ii), stirring for 45min;

[0075] (iv) Add 4 mmol of NaF to the mixed solution obtained in step (iii), stir evenly, seal, hydrothermally treat at 180° C. for 12 hours, and then cool;

[0076] (v) centrifuged, washed twice with ethanol, water and ethanol in sequence, and dried to obtain the obtained product.

Embodiment 2

[0078] (i) prepare an aqueous solution comprising Y, Yb, Er, Mn, including 1.0 mmol of Ln (NO 3 ) 3 (Ln=0.8mmol Y+0.15mmol Yb+0.05mmol Er), Mn: Y=5% (mol percentage);

[0079] (ii) Take sodium hydroxide (0.6g), twice-distilled water (4mL), ethanol (10mL) and oleic acid (10mL), and mix them uniformly to obtain a mixed solution;

[0080] (iii) adding the solution of step (i) to the mixed solution of step (ii), stirring for 30min;

[0081] (iv) Add 6 mmol of NaF to the mixed solution obtained in step (iii), stir evenly, seal, hydrothermally treat at 180° C. for 8 hours, and then cool;

[0082] (v) centrifuged, washed twice with ethanol, water and ethanol in sequence, and dried to obtain the obtained product.

Embodiment 3

[0084] (i) prepare an aqueous solution comprising Y, Yb, Er, Mn, including 1.0 mmol of Ln (NO 3 ) 3 (Ln=0.65mmol Y+0.3mmol Yb+0.05mmol Er), Mn: Y=10% (mol percentage);

[0085] (ii) Take sodium hydroxide (0.3g), twice-distilled water (4mL), ethanol (10mL) and oleic acid (5mL), and mix them uniformly to obtain a mixed solution;

[0086] (iii) adding the solution of step (i) to the mixed solution of step (ii), stirring for 45min;

[0087] (iv) Add 10 mmol of NaF to the mixed solution obtained in step (iii), stir evenly, seal, hydrothermally treat at 200° C. for 12 hours, and then cool;

[0088] (v) centrifuged, washed twice with ethanol, water and ethanol in sequence, and dried to obtain the obtained product.

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Abstract

The invention relates to a preparation method of an up-conversion fluorescent material. The preparation method comprises that Mn is added into accessory materials. The invention also relates to the up-conversion fluorescent material of NaYF4: Yb, Er obtained by the preparation method. The up-conversion fluorescent material and the preparation method thereof have advantages shown in the patent specification.

Description

technical field [0001] The invention belongs to the field of preparation of rare earth up-conversion luminescent nanomaterials, in particular to a NaYF with excellent crystal form, size and spectral properties 4 : Yb, Er up-conversion fluorescent material. Background technique [0002] Upconversion fluorescent materials, also known as upconversion luminescent nanomaterials, upconversion nanomaterials, upconversion fluorescent nanoparticles, upconversion nanoparticles (Upconversion nanoparticles, UCNP), etc. and such as NaYF 4 : Yb, Er up-conversion fluorescent nanoparticles, etc. It is an important class of rare earth luminescent materials, which can convert infrared / near-infrared long-wavelength excitation light into short-wavelength visible emission light through a multi-photon absorption mechanism. In recent years, up-conversion fluorescent materials have attracted much attention as a new type of fluorescent marker in the fields of biomolecular detection, analysis and me...

Claims

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Application Information

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IPC IPC(8): C09K11/85
Inventor 谷战军田甘赵宇亮
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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