Method for preparing fluorescent nano material converted on NaYF4

A technology of fluorescent nanomaterials and rare earth ions, applied in the field of preparation of NaYF4 up-conversion luminescent nanomaterials, can solve problems such as troublesome operation and difficult control
CN101525540AInactive Publication Date: 2009-09-09CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Publication Date
2009-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing fluorescent nano material converted on NaYF4, comprising the steps: yttrium nitrate, ytterbium nitrate and erbium nitrate or yttrium chloride, ytterbium chloride, erbium chloride and thulium chloride are dissolved in de-ionized water according to the mixture radio that the mol ratio of rare earth ions which are yttrium ion, ytterbium ion and erbium ion is equal to (70-95): (1-25): (0.5-10), so that the mixed solution is prepared; water soluble polymer having the ligand radical with the rare earth ions is added into the mixed solution for stirring reaction to form complex compound; the pH value of the mixed solution is adjusted to be 2-6; sodium fluoride, ammonium fluoride or hydrofluoric acid can be added into the mixed solution and stirred until colloid solution that is approximately transparent is obtained; then, the colloid solution is put into a high pressure closed reactor and heated at the temperature of 140-200 DEG C; after that the obtained product is cooled to be the room temperature, centrifugated, separated, washed and dried, finally, the fluorescent nano material converted on NaYF4 is obtained. The method can be used for preparing the converted material at lower temperature, the particle size and the appearance can be controlled, and the water-solubility is good.
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Description

technical field

[0001] The present invention relates to NaYF 4 Preparation method of up-conversion luminescent nanomaterials, especially a NaYF with controllable particle size and morphology 4 Preparation method of upconversion fluorescent nanomaterial. Background technique

[0002] An upconversion luminescent material is a material that can emit visible light when excited by near-infrared light. Due to its special properties, up-conversion materials can be used in many aspects such as three-dimensional display, infrared detection, solid-state laser, anti-counterfeiting, and high-sensitivity biomolecular fluorescent labeling materials. In recent years, the use of up-conversion fluorescent materials as biomolecular fluorescent labeling materials has attracted widespread attention due to their high detection sensitivity. As a fluorescent labeling material for biomolecules, the size and shape of the material itself need to be controllable, the size distribution is uniform, t...

Claims

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