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Near-infrared long-lasting luminescent material with energy transfer, preparation method and application

A technology of energy transfer and luminescent materials, applied in the direction of luminescent materials, material excitation analysis, chemical instruments and methods, etc., can solve the problems of limiting the application of long afterglow materials and slow development of long afterglow materials

Active Publication Date: 2016-10-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, long afterglow materials are mainly concentrated in the visible light region and used as night vision materials. The development of long afterglow materials in the near infrared region is extremely slow, which limits the application of long afterglow materials in biological imaging.

Method used

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  • Near-infrared long-lasting luminescent material with energy transfer, preparation method and application
  • Near-infrared long-lasting luminescent material with energy transfer, preparation method and application
  • Near-infrared long-lasting luminescent material with energy transfer, preparation method and application

Examples

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Embodiment 1

[0033] In the near-infrared energy transfer long afterglow material of this embodiment, the matrix material is Zn x m y Ga 2 o 4 , M takes Ca, x=0.9, y=0.1; the dopant ion is Cr 3+ 、Nd 3+ , the doping amount is 0.5mol%. According to the following components, zinc oxide, calcium carbonate, gallium oxide, chromium oxide, and neodymium oxide were weighed respectively, and fired at 1300° C. for 2 hours after grinding and mixing.

[0034] The near-infrared fluorescence spectrum of the sample prepared in this embodiment is as follows: figure 1 The shown shows that under the excitation of 395nm, the luminescence of 1064nm is emitted, and this long afterglow is Nd 3+ glowing. The luminescence at 1064nm corresponds to the excitation peak as figure 2 shown. image 3 The long afterglow spectrum of the near-infrared long afterglow material prepared in this example is shown for 1 minute after being irradiated with sunlight for 10 minutes, indicating that the material has long afte...

Embodiment 2

[0036] In the near-infrared energy transfer long afterglow material of this embodiment, the matrix material is Zn x m y Ga 2 o 4 , M takes Ba, x=0.6, y=0.4; the dopant ion is Cr 3+ 、Nd 3+ , the doping amount is 0.5mol%. According to the following components, a certain mass of zinc acetate, barium carbonate, gallium nitrate, chromium oxide, and neodymium fluoride were weighed, and fired at 1100°C for 8 hours after grinding and mixing. Image 6 It is the near-infrared long afterglow decay curve of the near-infrared long afterglow material prepared in this example, which is monitored for 1 minute after being irradiated with sunlight for 10 minutes at 1064 nm, which shows that the material of this example has near-infrared long afterglow for a certain period of time.

Embodiment 3

[0038] In the near-infrared energy transfer long afterglow material of this embodiment, the matrix material is Zn x m y Ga 2 o 4 , M takes Ca, x=0.3, y=0.7; the dopant ion is Cr 3+ 、Nd 3+ , the doping amount is 1mol%. According to the following components, a certain mass of zinc oxide, calcium carbonate, gallium fluoride, chromium fluoride, and neodymium oxide were weighed, and fired at 1200 ° C for 4 hours after grinding and mixing. Figure 7 It is the near-infrared long afterglow decay curve of the near-infrared long afterglow material prepared in this example, which is monitored for 1 minute after being irradiated with sunlight for 10 minutes at 1064 nm, which shows that the material of this example has near-infrared long afterglow for a certain period of time.

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Abstract

The invention discloses a near-infrared long-persistence luminescent material capable of energy transmission. The matrix material is ZnxMyGa2O4, wherein M is Ca, Sr or Ba; 0.1-2 mol% of Cr<3+> and 0.1-2 mol% of Nd<3+> are doped in the matrix material; and 0<x<=1, 0<=y<=1, and x+y=1. The invention also discloses a preparation method of the near-infrared long-persistence luminescent material. The luminescent wavelengths of the near-infrared long-persistence luminescent material are respectively near 710nm and 1064nm. The near-infrared long-persistence luminescent material has photoexcited fluorescence and photoexcited long-persistence luminescence, and thus, can be recovered. The near-infrared long-persistence luminescent material can be well used in the field of biological imaging.

Description

technical field [0001] The invention relates to a near-infrared long-lasting luminescent material, in particular to a near-infrared long-lasting luminescent material with energy transfer, a preparation method and an application thereof. Background technique [0002] Long-lasting luminescent materials are materials that can still be observed to emit light after a period of excitation (such as X-ray, ultraviolet light, visible light, electron beam, etc.) Wait. Long afterglow materials have developed rapidly in the past few decades, and so far, long afterglow materials have been reported in various bands. Among them, CaAl 2 o 4 : Eu 2+ ,Nd 3+ (Blu-ray), SrAl 2 o 4 : Eu 2+ , Dy 3+ (Green Light) etc. have been commercially produced and widely used in various fields. For example: signage, display, decoration, medical, etc. [0003] But so far, most of the remarkable achievements have focused on the research of visible long afterglow materials, and the research on long a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/62A61K49/00G01N21/64
Inventor 邱建荣秦嬉嬉李杨
Owner SOUTH CHINA UNIV OF TECH
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