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A red-light enhanced up-conversion luminescence porous ZNO nanoparticle and preparation method thereof

A nanoparticle and red light technology, applied in the field of up-conversion luminescence, can solve the problems of weak luminous intensity and unfavorable imaging of cells in vivo, and achieve the effect of good pore structure and good dispersion

Active Publication Date: 2021-06-29
ZHOUKOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current upconverting luminescent nanomaterials have weak luminescence intensity in the near-infrared region (greater than 600 nm), which is not conducive to in vivo cell imaging.

Method used

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  • A red-light enhanced up-conversion luminescence porous ZNO nanoparticle and preparation method thereof
  • A red-light enhanced up-conversion luminescence porous ZNO nanoparticle and preparation method thereof
  • A red-light enhanced up-conversion luminescence porous ZNO nanoparticle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing red light-enhanced upconversion luminescent porous ZnO nanoparticles, comprising the following steps,

[0023] (1) respectively divide 6×10 -3 ~1.0×10 -2 mol Zn(NO 3 ) 2 ·6H 2 O, 1.0×10 -2 mol~1.8×10 -2 mol anhydrous Na 2 CO 3 Dissolve in 15 mL ~ 20 mL deionized water, and ultrasonically dissolve the two completely to obtain solutions A and B respectively. In solution A, add 3×10 -4 mol~6×10 -4 mol of Yb 3+ Ionic solution, 3×10 -5 mol~6×10 -5 mol Er 3+ ionic solution and 0.6×10 -3 mol~1.0×10 -3 mol of Mn(NO 3 ) 2 ; Then slowly add solution B at a rate of 1-2 drops / s under magnetic stirring at room temperature, stir at room temperature for 1-2 h, centrifuge to obtain a white precipitate, wash the white precipitate with deionized water and absolute ethanol for 2-3 times respectively , collected the washed precipitate, and dried it under vacuum at 50°C–70°C for 10 h–15 h to obtain a white powdery Yb / Er / Mn co-doped ZnO precursor...

Embodiment 2

[0027] A method for preparing red light-enhanced upconversion luminescent porous ZnO nanoparticles, comprising the following steps,

[0028] (1) 3.0g Zn(NO 3 ) 2 ·6H 2 O, 1.8g anhydrous Na 2 CO 3 Dissolve in 18 mL deionized water, and ultrasonically dissolve the two completely to obtain solutions A and B, respectively. In solution A, add 4.6×10 -4 mol of Yb 3+ Ionic solution, 4.0×10 -5 mol~3.5×10 -5 mol of Er 3+ Ionic solution and 0.35g of 50% Mn(NO 3 ) 2 aqueous solution; then slowly add solution B at a rate of 2 drops / s under magnetic stirring at room temperature, stir at room temperature for 1.5 h, centrifuge to obtain a white precipitate, wash the white precipitate twice with deionized water and absolute ethanol respectively, and collect the washed Precipitated and dried under vacuum at 65 °C for 10 h to obtain a white powdery Yb / Er / Mn co-doped ZnO precursor [Zn 4 CO 3 (OH) 6 ].

[0029] (2) White powdery Yb / Er / Mn co-doped ZnO precursor [Zn 4 CO 3 (OH) ...

Embodiment 3

[0032] A method for preparing red light-enhanced upconversion luminescent porous ZnO nanoparticles, comprising the following steps,

[0033] (1) 2.5 g Zn(NO 3 ) 2 ·6H 2 O, 1.5 g anhydrous Na 2 CO 3 Dissolve in 15 mL deionized water, and ultrasonically dissolve the two completely to obtain solutions A and B, respectively. Then 4.5 mL of 0.1 mol / L Yb(NO 3 ) 3 solution, 5.0 mL0.01 mol / L Er(NO 3 ) 3 solution and 0.3 g of 50% Mn(NO 3 ) 2 The aqueous solution was added to solution A. Then, solution B was slowly added at a rate of 1 drop / s under magnetic stirring at room temperature, stirred at room temperature for 1 h, and centrifuged. The resulting white precipitate was washed twice with deionized water and absolute ethanol, and the precipitate was collected, and then vacuum-dried at 60 °C for 12 h, Yb / Er / Mn co-doped ZnO precursor [Zn 4 CO 3 (OH) 6 ].

[0034] (2) White powdery Yb / Er / Mn co-doped ZnO precursor [Zn 4 CO 3 (OH) 6 ] into a 250 mL round bottom flask, a...

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Abstract

The invention provides a red-light enhanced up-conversion luminescent porous ZnO nanoparticle and a preparation method thereof. A red-light-enhanced upconversion luminescent porous ZnO nanoparticle is a ZnO nanoparticle doped with Yb, Er, and Mn, including the following raw materials made, Zn 2+ Ionic solution, Yb 3+ Ionic solution, Er 3+ Ionic solution, Mn 2+ Ionic solution, CO 3 2‑ Ionic solution, where Zn 2+ : Yb 3+ :Er 3+ :Mn 2+ The molar ratio of Zn is 2+ : Yb 3+ :Er 3+ :Mn 2+ =100~60: 3~6: 0.3~0.6: 6~10. The ZnO nanoparticles are prepared by thermal decomposition and high-temperature calcination. The shape of the ZnO nanoparticles is regular spherical, small in size, porous, and the red light emission is enhanced.

Description

technical field [0001] The invention relates to the field of up-conversion luminescence, in particular to a red-light-enhanced up-conversion luminescence porous ZnO nanoparticle. Background technique [0002] Upconversion luminescence is a kind of luminescence phenomenon which is anti-Stoke's law. It can absorb long-wavelength light and emit short-wavelength light. It has broad application prospects in the field of biomedicine. Therefore, up-conversion luminescent nanomaterials are also one of the hot research topics in recent years. Compared with traditional down-converting luminescent materials, up-converting luminescent nanomaterials have better sharp emission spectra, good photo / chemical stability, stronger tissue penetration ability, lower fluorescence background and lower cell damage It has attractive application prospects in cell imaging, drug therapy and monitoring, and magnetic resonance imaging. [0003] At present, the up-conversion luminescent host materials th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/54B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C09K11/7769
Inventor 田博士王振领黄敬斌高博
Owner ZHOUKOU NORMAL UNIV
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