Nano-material having both magnetic property and rear earth property luminescent performance and preparation method thereof

A technology of luminescent properties and nanomaterials, applied in magnetic materials, luminescent materials, chemical instruments and methods, etc., can solve problems such as light energy waste, and achieve good monochromaticity and good biocompatibility.

Inactive Publication Date: 2008-07-23
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using small organic molecules to obtain pure color light requires spectroscopic or other methods, resulting in a certain waste of light energy

Method used

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  • Nano-material having both magnetic property and rear earth property luminescent performance and preparation method thereof
  • Nano-material having both magnetic property and rear earth property luminescent performance and preparation method thereof
  • Nano-material having both magnetic property and rear earth property luminescent performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Preparation of rare earth chlorides

[0035] Dissolve rare earth oxides in hydrochloric acid under heating conditions, the molar ratio of rare earth oxides:hydrochloric acid is 1:3, and evaporate excess hydrochloric acid until the hydrochloric acid is completely evaporated to obtain rare earth chloride TbCl 3 , and then the resulting rare earth chloride TbCl 3 Make a solution with a concentration of 0.1mmol / L in absolute ethanol;

[0036] 2) Synthesis of Fe3O4 nanoparticles

[0037] Under the condition of mechanical stirring at 1000 rpm, the FeCl 3 : FeSO 4 ·7H 2 FeCl with O molar ratio of 1:5 3 Aqueous solution and FeSO 4 ·7H 2 O hydrochloric acid solution is mixed and added to 0.7M ammonia solution, wherein, FeCl 3 Aqueous solution and FeSO 4 ·7H 2 O hydrochloric acid solution concentration is 1mmol / L, FeCl 3 solution and FeSO 4 ·7H 2 The weight ratio of O hydrochloric acid solution and ammonia solution is 1: 5: 300, and the black precipitate is produc...

Embodiment 2

[0045] 1) Preparation of rare earth chlorides

[0046] Dissolve rare earth oxides in hydrochloric acid under heating conditions, the molar ratio of rare earth oxides:hydrochloric acid is 1:3, and evaporate excess hydrochloric acid until the hydrochloric acid is completely evaporated to obtain rare earth chloride TbCl 3 , and then the resulting rare earth chloride TbCl 3 In absolute ethanol, make a solution with a concentration of 1mmol / L;

[0047] 2) Synthesis of Fe3O4 nanoparticles

[0048] Under the condition of mechanical stirring at 1000 rpm, the FeCl 3 : FeSO 4 ·7H 2 FeCl with O molar ratio of 1:5 3 Aqueous solution and FeSO 4 ·7H 2 O hydrochloric acid solution is mixed and added to 0.7M ammonia solution, wherein, FeCl 3 Aqueous solution and FeSO 4 ·7H 2 O hydrochloric acid solution concentration is 1mmol / L, FeCl 3 solution and FeSO 4 ·7H 2 The weight ratio of O hydrochloric acid solution and ammonia solution is 1: 5: 300, and the black precipitate is produce...

Embodiment 3

[0056] 1) Preparation of rare earth chlorides

[0057] Dissolve rare earth oxides in hydrochloric acid under heating conditions, the molar ratio of rare earth oxides:hydrochloric acid is 1:3, and evaporate excess hydrochloric acid until the hydrochloric acid is completely evaporated to obtain rare earth chloride TbCl 3 , and then the resulting rare earth chloride TbCl 3 Make a solution with a concentration of 0.5mmol / L in absolute ethanol;

[0058] 2) Synthesis of Fe3O4 nanoparticles

[0059] Under the condition of mechanical stirring at 1000 rpm, the FeCl 3 : FeSO 4 ·7H 2 FeCl with O molar ratio of 1:5 3 Aqueous solution and FeSO 4 ·7H 2 O hydrochloric acid solution is mixed and added to 0.7M ammonia solution, wherein, FeCl 3 Aqueous solution and FeSO 4 ·7H 2 O hydrochloric acid solution concentration is 1mmol / L, FeCl 3 solution and FeSO 4 ·7H 2 The weight ratio of O hydrochloric acid solution and ammonia solution is 1: 5: 300, and the black precipitate is produc...

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Abstract

The invention relates to a nanometer material with magnetism and rare-earth luminous performance and a preparation method. An improved St ber method and a technique of layer-by-layer assembly are adopted, the nanometer particles of ferroferric oxide with superparamagnetism are coated by silicon dioxide, then Tb complex is covalently grafted on the surface of magnetic silicon dioxide nano-sphere to be a bifunctional material with both the magnetic and optical characteristics, and the synthesis and application of the bifunctional fluorescence probe are provided with a beneficial research foundation, the controllability of the recovery of the bifunctional fluorescence probe is improved due to the magnetism of the material. The more probability of surface functionalization and application of bifunctional particles is allowed because the outermost layer of the nanometer material is covered with a thin layer of silicon dioxide.

Description

technical field [0001] The invention relates to a nanometer material and a preparation method having both magnetic and rare-earth characteristic luminous properties. technical background [0002] In recent years, with the rapid development of nanotechnology, more and more nano functional materials have been synthesized. These materials have excellent properties, such as magnetic, luminescent and electrical properties. Magnetic and optical materials are extremely important in the fields of chemistry, biology, pharmacy, and biotechnology. Such as nuclear magnetic resonance imaging, magnetic fixation and targeted drug delivery. Fluorescent nanomaterials with high photostability have also received great attention in the field of biomarkers. If the magnetic and optical properties of different materials are integrated into the same nanosystem through effective connection means, then this system will be in the field. More aspects are applied. However, how to combine two or more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/77C09K11/02H01F1/00
Inventor 张洪杰于世泳
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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