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Rare earth doped long afterglow material and preparation method and application thereof

A long afterglow material and rare earth doping technology, applied in the field of medical materials, can solve the problems of inability to excite the material, weak penetration, weak afterglow, etc., and achieve the effect of enhancing afterglow performance.

Active Publication Date: 2021-10-15
JIANGXI INST OF RARE EARTHS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN105802627A discloses a near-infrared light-excited up-conversion long-lasting composite nanomaterial and its preparation method and application. The composite nano-material can realize near-infrared wavelength light-excited nanoparticles to produce long-lasting luminescence. The material consists of an up-conversion nanometer Materials and long-lasting nanomaterials are combined to obtain a special composition structure. This invention utilizes the visible light emitted by up-conversion nanomaterials after absorbing near-infrared light to match the absorption light of long-lasting nanomaterials, that is, the visible light emitted by upconversion nanomaterials is long-lasting Afterglow nanomaterials absorb, so as to realize long-lasting nanomaterials to emit light, and realize long-lasting luminescence under near-infrared light excitation, which overcomes the problems of traditional long-lasting nanoprobes with weak penetrating power of short-wavelength excitation light and unable to excite materials in organisms
Subsequently, some researchers also reported a long afterglow material co-doped with Mn2+ and Yb3+ MgGeO3, which enhanced the The afterglow of Mn2+ at 680nm is luminous, but the afterglow of Yb3+ in the second near-infrared region is very weak, which limits its further application

Method used

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  • Rare earth doped long afterglow material and preparation method and application thereof
  • Rare earth doped long afterglow material and preparation method and application thereof
  • Rare earth doped long afterglow material and preparation method and application thereof

Examples

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Embodiment 1

[0044] A rare earth doped long afterglow material, the rare earth doped long afterglow material has the chemical formula MgGeO 3 :0.1mol%Mn 3+ ,1mol%Yb 3+ ,1mol%Y 3+ to represent, Mn 3+ and Yb 3+ is the luminescence center ion, Y 3+ is the sensitizing ion;

[0045] The preparation method of the doped long afterglow material provided in this embodiment specifically includes: adding 20 μL of Mn(NO 3 ) 3 aqueous solution (0.1M), 200 μL of Yb(NO 3 ) 3 Aqueous solution (0.1M), 200μL Y(NO 3 ) 3 Aqueous solution (0.1M), 0.08g of MgO and 0.2092g of GeO 2 Mix in an agate mortar, then add ethanol for grinding, transfer to a crucible and calcinate at 800°C for 2h, then take out the pre-fired material and grind again, put it into a tube furnace and calcinate at 1300°C for 5h, to obtain the Rare earth doped long afterglow material.

Embodiment 2

[0047] A rare earth doped long afterglow material, the rare earth doped long afterglow material has the chemical formula MgGeO 3 :0.1mol%Mn 3+ ,1mol%Yb 3+ ,0.5mol%Y 3+ to represent, Mn 3+ and Yb 3+ is the luminescence center ion, Y 3+ is the sensitizing ion;

[0048] The preparation method of the doped long afterglow material provided in this embodiment specifically includes: adding 20 μL of Mn(NO 3 ) 3 aqueous solution (0.1M), 200 μL of Yb(NO 3 ) 3 Aqueous solution (0.1M), 100μL of Y(NO 3 ) 3 Aqueous solution (0.1M), 0.08g of MgO and 0.2092g of GeO 2 Mix in an agate mortar, then add ethanol for grinding, transfer to a crucible and calcinate at 700°C for 3h, then take out the pre-fired material and grind again, put it into a tube furnace and calcinate at 1400°C for 4h to obtain the Rare earth doped long afterglow material.

Embodiment 3

[0050] A rare earth doped long afterglow material, the rare earth doped long afterglow material has the chemical formula MgGeO 3 :0.1mol%Mn 3+ ,1mol%Yb 3+ ,2mol%Y 3+ to represent, Mn 3+ and Yb 3+ is the luminescence center ion, Y 3+ is the sensitizing ion;

[0051] The preparation method of the doped long afterglow material provided in this example specifically includes: 20 μL of Mn(NO 3 ) 3 aqueous solution (0.1M), 200 μL of Yb(NO 3 ) 3 Aqueous solution (0.1M), 400μL of Y(NO 3 ) 3 Aqueous solution (0.1M), 0.08g of MgO and 0.2092g of GeO 2 Mix in an agate mortar, then add ethanol for grinding, transfer to a crucible and calcinate at 900°C for 1 hour, then take out the pre-fired material and grind it again, put it into a tube furnace and calcinate at 1200°C for 6 hours to obtain the Rare earth doped long afterglow material.

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Abstract

The invention provides a rare earth doped long-afterglow material and a preparation method and application thereof, the rare earth doped long-afterglow material is represented by a chemical formula MgGeO3: aMn < 3 + >, bYb < 3 + > and cY < 3 + >, Mn < 3 + > and Yb < 3 + > are luminescent central ions, Y < 3 + > is a sensitizing ion, wherein 0.01 mol% < = a < = 5mol%, 0.25 mol% < = b < = 3mol%, and 0.25 mol% < = c < = 3 mol%; by introducing Y < 3 + > for doping and controlling the molar amount of luminescent central ions and sensitized ions, the finally obtained rare earth doped long afterglow material has excellent luminescent effects in a near-infrared first region and a near-infrared second region at the same time; the problem that a long-afterglow material prepared by a traditional method cannot meet the requirement that a near-infrared region has double emission peaks at the same time is solved.

Description

technical field [0001] The invention belongs to the technical field of medical materials, and in particular relates to a rare earth doped long afterglow material and its preparation method and application. Background technique [0002] Persistent luminescence (PersL) is a luminescence phenomenon that can continue to emit light for several minutes, hours or even days after the excitation light source is removed. Materials with this luminescence phenomenon are called persistent materials. Generally speaking, afterglow materials have two kinds of active centers, luminescent centers and traps, where the luminescent centers can undergo electron radiation transitions after being excited by an external light source, while the traps can capture electrons to store energy, and then release in the outside after the excitation stops. Under the influence of physical or temperature environment, the captured electrons are slowly released, making them return to the luminescent center to ach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78C09K11/02
CPCC09K11/7775C09K11/025
Inventor 张云宋良明丽艳
Owner JIANGXI INST OF RARE EARTHS CHINESE ACAD OF SCI
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