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Preparation method and application of hydrophilic rare earth nano-material

A rare earth nanomaterial and hydrophilic technology, applied in the field of nanomaterials, can solve problems such as being unsuitable for large-scale mass production, cumbersome operation process, etc., and achieve the effects of high commercial use value, simple experimental operation and high luminous efficiency.

Inactive Publication Date: 2015-09-16
NANJING TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The supramolecular self-assembled rare earth nanomaterials described in this patent need to remove water during the actual experiment process, and the entire experimental operation process is too cumbersome to be suitable for industrial mass production

Method used

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  • Preparation method and application of hydrophilic rare earth nano-material
  • Preparation method and application of hydrophilic rare earth nano-material
  • Preparation method and application of hydrophilic rare earth nano-material

Examples

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Embodiment 1

[0020] Example 1: At room temperature, sodium nitrate, ammonium fluoride, yttrium nitrate, ytterbium nitrate, and erbium nitrate were dissolved in 20 mL of ethanol in a molar ratio of 2:40:0.39:0.1:0.01, and heated at 20°C to 60°C. Stir for 20-30min, then add 6mmol of adipic acid, a surface-functional ligand, into the vigorously stirred solution, continue stirring for 30min, then transfer to a 25mL hydrothermal kettle, and perform hydrothermal treatment in a 180°C drying oven for 2h. After natural cooling, centrifuge three times in turn with deionized water and ethanol (the speed of centrifugation is 8000r / min), and then put the obtained precipitate in an oven and dry it at 60°C for 10h under air condition to obtain the desired hydrophilic rare earth nanomaterials.

Embodiment 2

[0021] Embodiment 2: according to the preparation method of embodiment 1, the prepared hydrophilic β-NaYF 4 : Yb / Er nanomaterials for labeling human cervical cancer cells and biological imaging.

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Abstract

The present invention belongs to the technical field of nano-materials, and particularly relates to a preparation method and application of a hydrophilic rare earth nano-material, and the method is as follows: a rare earth nitrate and chloride as rare earth sources, sodium fluoride and ammonia fluoride as fluoride sources, sodium chloride and sodium nitrate as sodium sources, ethylene glycol and ethanol as solvents and a surface functionalization ligand are mixed and stirred evenly according to certain mole ratio, the evenly-stirred solution is transferred into a hydrothermal kettle for water / solvent heat treatment. After natural cooling, deionized water and ethanol are used for in turn centrifuging, and the obtained precipitate is put into an oven for baking for 6-12 h at 60-120 DEG C under the condition of air to obtain the hydrophilic rare earth nano-material, by use of the one-step water / solvent heat method, the preparation technology is simple, the obtained hydrophilic rare earth nano-material has good stability, high luminous efficiency, adjustable size, controllable morphology, short cycle, low cost, high yield, no toxicity, and no pollution, and can be widely used in security, biological molecular fluorescent tag, biological imaging and other fields.

Description

technical field [0001] The invention relates to a hydrophilic rare earth nano material and provides a preparation method of the material, belonging to the technical field of nano materials. Background technique [0002] Rare earth elements have been widely used in materials and other fields because of their unique electronic structures, which exhibit excellent monochromaticity, photobleaching resistance, long fluorescence lifetime, and large Stocke shift. Among rare earth nanoluminescent materials, rare earth-doped upconversion nanoluminescent materials, because they can absorb lower energy photons and emit higher energy photons, make them have strong advantages in biological imaging, biomarking and biological detection. , such as low toxicity, high chemical stability, good photostability, narrow absorption and emission bands, long life and many other advantages. In addition, the near-infrared laser as its excitation source also brings many advantages, such as deep light pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85G01N21/64B82Y20/00
Inventor 黄岭赵宝洲徐水林魏魏张玺谢小吉黄维
Owner NANJING TECH UNIV
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