Preparation method of NaY(98-X)% F4:X%Yb, 2%Er@NaDyF4 in core-shell structure

A core-shell structure, 98-X technology, applied in the field of preparation of up-conversion reflective materials, can solve the problems of reducing up-conversion luminous efficiency and luminous intensity, and the influence of luminous centers

Inactive Publication Date: 2013-02-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the luminescent center of the existing magnetic fluorescent material is easily affected by high-energy groups, thereby reducing the luminous efficiency and luminous intensity of the up-conversion, and provides a core-shell structure NaY(98-X) %F 4 :X%Yb, 2%Er@NaDyF 4 preparation method

Method used

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  • Preparation method of NaY(98-X)% F4:X%Yb, 2%Er@NaDyF4 in core-shell structure
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  • Preparation method of NaY(98-X)% F4:X%Yb, 2%Er@NaDyF4 in core-shell structure

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specific Embodiment approach 1

[0024] Specific embodiment one: In this embodiment, the core-shell structure NaY(0.98-X)%F 4 :X%Yb, 2%Er@NaDyF 4 The preparation method is carried out according to the following steps:

[0025] 1. Weigh YCl according to the ratio of Y element, Yb element and Er element molar ratio (98-X): X: 2 3 ·6H 2 O, ErCl3 ·6H 2 O and YbCl 3 ·6H 2 O, then YCl 3 ·6H 2 O, ErCl 3 ·6H 2 O and YbCl 3 ·6H 2 O was dissolved in a mixture of oleic acid and octadecene and mixed, then stirred at 160°C until a light yellow solution was obtained, and cooled to room temperature to obtain a mixed solution;

[0026] The volume ratio of oleic acid and octadecene in the mixture of oleic acid and octadecene described in step 1 is 1: 4~1;

[0027] 2. Add NH to the mixed solution 4 Anhydrous methanol solution of F and NaOH, let stand for 30min, then heat to 110°C at a rate of 2K / min in an argon atmosphere, then keep at 110°C for 30min, and then heat to 300°C at a rate of 20K / min , and kept for 60...

specific Embodiment approach 2

[0035] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the volume ratio of oleic acid and octadecene in the mixture of oleic acid and octadecene described in step 1 is 3:7. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the volume ratio of oleic acid to octadecene in the mixture of oleic acid and octadecene described in step 1 is 2:3. Others are the same as in the first embodiment.

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Abstract

The invention provides a preparation method of NaY(98-X)% F4:X%Yb, 2%Er@NaDyF4 in a core-shell structure and relates to a preparation method of up-conversion reflecting material. The invention solves the technical problems that luminescent center of the existing magnetic fluorescent material can be easily influenced by a high-energy group and the up-conversion luminescent efficiency and luminescent intensity are reduced. The preparation method provided by the invention comprises the following steps of: adding DyCl3.6H2O into a mixture of oleic acid and octadecene, heating up to 160 DEG C to form uniform light yellow solution, cooling, adding normal hexane solution, stirring, then heating up, insulating, cooling, adding absolute methanol solution of NH4F and NaOH, standing still, heating and insulating in an argon atmosphere, and then heating up and insulating, cooling, washing, and centrifuging, thus obtaining the NaY(98-X)% F4:X%Yb, 2%Er@NaDyF4 in the core-shell structure. The NaY(98-X)% F4:X%Yb, 2%Er@NaDyF4 in the core-shell structure is of a hexagonal phase structure, the luminescent center of the NaY(98-X)% F4:X%Yb, 2%Er@NaDyF4 in the core-shell structure is not influenced by the high-energy group, and up-conversion luminescent efficiency is improved, so that the luminescent intensity is greatly improved.

Description

technical field [0001] The invention relates to a preparation method of an up-conversion reflective material. Background technique [0002] The magnetic fluorescent multifunctional nanomaterial is a kind of nanomaterial with both fluorescent and magnetic properties. Magnetic fluorescent multifunctional nanoparticles can realize multiple functions such as magnetic separation, target recognition, fluorescence imaging and magnetic resonance imaging at the same time, and have been widely used in immunoassay, drug analysis, disease diagnosis, cell and in vivo imaging, etc. It has the incomparable advantages of single-functional fluorescent probes or magnetic materials. Compared with single-functional fluorescent probes or magnetic material probes, magnetic fluorescent multifunctional nanomaterials have the advantages of both magnetic materials and fluorescent materials, and have many advantages. Good application prospects have attracted great attention from researchers in the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85C09K11/02
Inventor 高智勇程倩王善荣刘辉吴迪蔡伟
Owner HARBIN INST OF TECH
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