Method for preparing up-conversion fluorescent matrix material NaYF4 nano crystal

A technology of matrix materials and nanocrystals, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of large particle size of nanoparticles, and achieve the effects of stable product quality, simple process and equipment, and good repeatability
CN1935938AInactive Publication Date: 2007-03-28DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2007-03-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses supra transition luminescence substrate material NaYF4 nanometer crystal preparing method. It includes the following steps: (1) dissolving rare earth yttrium oxide in perchloric acid or hydrochloric acid with 0.1-0.5mol / l density and 0-6 pH to produce perchloric acid yttrium or yttrium chloride solution; (2) preparing hydroxyl carboxyl series complexing agent with 0.2-1.0mol / l density, mixing it with the (1) solution, adjusting the pH at 0-6; the mol ratio of the perchlorate or hydrochloride and hydroxyl carboxyl series complexing agent is 1:1-5; (3) preparing sodium fluoride aqueous solution with 0.02-1mol / l density and 10 pH, adding the (2) solution at 0-45 degree centigrade, aging for 1-5h; the mol ratio of the sodium fluoride and the total rare earth ion is 1:1.2-30; (4) separating precipitate, washing, drying to gain nanometer NaYF4 particle. The produced NaYF4 particle has the advantages of controllable size with 10-25 nanometer, simple technology and device, good product quality and repeatability.
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Description

technical field

[0001] The present invention relates to a kind of preparation method of nanometer up-conversion fluorescent host material, relate to nanometer up-conversion fluorescent host material NaYF more precisely 4 The preparation technology of nano crystal belongs to the field of preparation technology of nano fluorescent material. Background technique

[0002] Up-conversion fluorescent materials are a kind of luminescent materials that can emit short-wavelength light under the excitation of long-wavelength light. Cooperating with infrared light-emitting diodes or semiconductor infrared lasers, such materials can be made into light-emitting diodes or lasers of different colors (Opt Lett 1997; 22:808-810.). In recent years, the use of up-conversion fluorescent materials as fluorescent labeling materials for biomolecules has attracted widespread attention. This type of material is used as a fluorescent material probe with low interference and high detection sensitivity...

Claims

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