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Preparation method of CaF2:Yb, Er@SiO2 composite fiber material with up-conversion luminescence effect

A technology of composite fibers and fiber composite materials, which is applied in the field of calcium fluoride nanoparticles and silica fiber composite materials and their preparation, can solve problems such as limited application, and achieve the effects of uniform particle size, high luminous efficiency and stable performance.

Inactive Publication Date: 2017-05-31
ZHEJIANG UNIV
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Problems solved by technology

However, the drug release process is a complex change process, and it is not yet possible to quantify the degree of progress of the reaction at different stages, which limits its clinical application. Therefore, an invention that can monitor the change process in real time The silica-based support is of great significance

Method used

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  • Preparation method of CaF2:Yb, Er@SiO2 composite fiber material with up-conversion luminescence effect
  • Preparation method of CaF2:Yb, Er@SiO2 composite fiber material with up-conversion luminescence effect
  • Preparation method of CaF2:Yb, Er@SiO2 composite fiber material with up-conversion luminescence effect

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Embodiment 1

[0024] The preparation method of calcium fluoride nanoparticles and silica fiber composite material with up-conversion luminescence effect according to the present invention comprises the following steps:

[0025] (1) According to the general chemical formula Ca 1-0.18-0.02 f 2 :0.18Yb 3+ ,0.02Er 3+ The molar ratio of each element in the method, accurately weigh calcium nitrate tetrahydrate, erbium nitrate pentahydrate and ytterbium nitrate pentahydrate, the total amount is 4mmol, then add 80ml of deionized water with 8mmol of trisodium citrate, and stir under magnetic force It was dissolved to obtain solution A. Then 8 mmol of sodium fluoroborate was added into 40 ml of deionized water to obtain solution B. Solution B was added dropwise to solution A, and the pH of the solution was adjusted with ammonia water to make pH=7.

[0026] (2) After stirring the above mixed solution for 30 min, put it into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 18...

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Abstract

The invention provides a CaF2:Yb, Er@SiO2 composite fiber material with up-conversion luminescence, which is prepared by preparing an up-conversion luminescence calcium fluoride nano particle by a hydrothermal method and then performing preparation by a collosol-gel combined electrostatic spinning method. A method is simple and convenient and high in operability. The average particle size of an obtained fiber is adjustable between 200nm and 900nm, the dimension distribute is uniform, and the continuity is good. The prepared fiber composite has the advantages of good compatibility, strong bioactivity, easy surface modification and the like of silicon dioxide, can achieve a good up-conversion luminescence effect, has wide application prospects in biomedicine and has an important application in the fields such as drug delivery, tissue engineering scaffolds, biological probes, tissue or cell imaging and drug tracing.

Description

technical field [0001] The invention belongs to the technical field of applied inorganic advanced nanomaterials, in particular to a calcium fluoride nanoparticle and silica fiber composite material with upconversion luminescence effect and a preparation method thereof, which can be applied to drug delivery, tissue scaffold materials and biological Tissue imaging, drug tracing and other fields. Background technique [0002] Silica is an important inorganic material with good biocompatibility, strong biological activity and excellent properties such as easy surface modification. It has important applications in the fields of drug delivery and tumor treatment, so it has been obtained Continued extensive research. However, the drug release process is a complex change process, and it is not yet possible to quantify the degree of progress of the reaction at different stages, which limits its clinical application. Therefore, an invention that can monitor the change process in real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/61D01F9/02
CPCC09K11/02C09K11/7773D01F9/02
Inventor 李翔夏珍韩高荣
Owner ZHEJIANG UNIV
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