NaGdF4 multifunctional fluorescent label nano-material based on europium ion dual-mode luminescence

A technology of fluorescent labeling and nanomaterials, applied in the directions of luminescent materials, chemical instruments and methods, etc., to achieve the effect of simple preparation process, uniform particles and good repeatability

Inactive Publication Date: 2011-09-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is ten times larger than Yb 3+ /Tm 3+ /Eu 3+ Up-conversion luminescence

Method used

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  • NaGdF4 multifunctional fluorescent label nano-material based on europium ion dual-mode luminescence
  • NaGdF4 multifunctional fluorescent label nano-material based on europium ion dual-mode luminescence
  • NaGdF4 multifunctional fluorescent label nano-material based on europium ion dual-mode luminescence

Examples

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example 1

[0019] Example 1: (1) NaGdF 4 :18%Yb 3+ , 1%Tm 3+ Preparation of nanocrystalline cores. Weigh 0.151g gadolinium chloride (GdCl 3 .6H 2 O), 0.0019g thulium chloride (TmCl 3 .6H 2 O) and 0.0349g ytterbium chloride (YbCl 3 .6H 2 O) into a 100mL three-necked flask, add 5mL oleic acid and 16mL octadecene, stir to make it evenly mixed. Under the protection of nitrogen flow, the above mixture was heated to 150° C. and kept at this temperature for 90 minutes to completely dissolve the rare earth chloride and obtain a transparent clear solution. After cooling to room temperature, 10 mL of methanol solution in which 0.084 g of ammonium fluoride and 0.084 g of sodium hydroxide were dissolved was added dropwise, stirred and allowed to react at room temperature for 30 minutes. Then the mixed solution was heated to 50° C. and kept for 30 minutes to remove methanol in the reaction system. After the methanol was removed, the reaction system was heated to 300° C. under the protection...

example 2

[0021] Example 2: (1) NaGdF 4 :18%Yb 3+ , 0.5%Tm 3+ Preparation of nanocrystalline cores. Weigh 0.1515g of gadolinium chloride, 0.001g of thulium chloride and 0.0349g of ytterbium chloride into a 100mL three-neck flask, add 5mL of oleic acid and 16mL of octadecene, and stir to make them evenly mixed. Under the protection of nitrogen flow, the above mixture was heated to 150°C, and kept at this temperature for 90 minutes to completely dissolve the rare earth chloride and obtain a transparent clear solution. After cooling to room temperature, add 0.084g of ammonium fluoride and 0.084g of sodium hydroxide in methanol solution 10mL, stirred and allowed to react at room temperature for 30 minutes, the mixed solution was heated to 50°C and kept for 30 minutes to remove methanol in the reaction system. After the methanol was removed, the reaction system was heated to 300° C. under the protection of nitrogen flow, kept for 60 minutes, then stopped heating, and allowed to cool down ...

example 3

[0023] Example 3: (1) NaGdF 4 :18%Yb 3+ , 0.3%Tm 3+ Preparation of nanocrystalline cores. Weigh 0.1518g of gadolinium chloride, 0.0006g of thulium chloride and 0.0349g of ytterbium chloride into a 100mL three-necked flask, add 5mL of oleic acid and 16mL of octadecene, and stir to mix them evenly. Under the protection of nitrogen flow, the above mixture was heated to 150° C. and kept at this temperature for 90 minutes to completely dissolve the rare earth chloride and obtain a transparent clear solution. After cooling to room temperature, 10 mL of methanol solution in which 0.084 g of ammonium fluoride and 0.084 g of sodium hydroxide were dissolved was added dropwise, stirred and allowed to react at room temperature for 30 minutes. Then the mixed solution was heated to 50° C. and kept for 30 minutes to remove methanol in the reaction system. After the methanol was removed, the reaction system was heated to 300° C. under the protection of nitrogen flow, kept for 60 minutes, ...

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Abstract

A NaGdF4 multifunctional fluorescent label nano-material based on europium ion dual-mode luminescence. In the invention, Tm<3+> (Yb <3+>) and Eu<3+> are respectively mixed into cores and shell bodies of NaGdF4 nanometer crystals, and thus europium ion dual-mode luminescence is realized in monodisperse hexagonal phase NaGdF4 nanometer crystals. Through co-sensitization of Tm<3+> and Yb <3+> in the cores and the advantages of core-shell structures, strong europium ion red up-conversion luminescence is realized under near-infrared light of 980nm, and strong europium ion red down-conversion luminescence is realized under ultraviolet light of 273nm. The monodispersed NaGdF4 nanometer crystals which have the core-shell structures and can generate europium ion up-conversion luminescence and europium ion down-conversion luminescence can be utilized as a multifunctional fluorescent label nano-material after being treated by surface functionalization. The NaGdF4 fluorescent label nano-material with core-shell structures comprises NaGdF4 comprising 0 to 50 molar percent Yb <3+> and 0 to 10 molar percent Tm<3+>, and NaGdF4 comprising 0 to 50 molar percent Eu<3+>.

Description

technical field [0001] The present invention relates to rare earth doped sodium fluorogadolinium (NaGdF 4 ) core-shell structure nano-luminescent materials, especially NaGdF based on europium ion dual mode (up-conversion and down-conversion) luminescence 4 Multifunctional fluorescent labeling nanomaterials with core-shell structure. Background technique [0002] Monodisperse rare earth inorganic fluoride fluorescent labeling nanomaterials have attracted widespread attention from scholars at home and abroad due to their excellent optical properties and potential applications in biomarkers. Compared with fluorescent labeling materials such as organic dyes and semiconductor quantum dots, inorganic rare earth fluoride nanocrystals have comprehensive advantages such as high photochemical stability, almost non-toxicity, narrow linewidth, long fluorescence lifetime, high luminous efficiency and tunable fluorescence emission wavelength. , is currently a new generation of fluoresce...

Claims

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Application Information

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IPC IPC(8): C09K11/85
Inventor 陈学元刘永升罗文钦朱浩淼李仁富
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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