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A high-sensitivity up-conversion fluorescent temperature probe material and its preparation method

A fluorescent temperature and high-sensitivity technology, which is applied in the direction of luminescent materials, material analysis and material analysis through optical means, can solve the problems of low sensitivity and large errors

Active Publication Date: 2020-06-23
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the small distance difference between thermally coupled energy level pairs, the fluorescence emission peaks overlap to a certain extent, which will cause large errors in the data processing process; secondly, the sensitivity obtained by using thermally coupled energy level pairs is generally very low

Method used

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  • A high-sensitivity up-conversion fluorescent temperature probe material and its preparation method
  • A high-sensitivity up-conversion fluorescent temperature probe material and its preparation method
  • A high-sensitivity up-conversion fluorescent temperature probe material and its preparation method

Examples

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Embodiment 1

[0021] A high-sensitivity up-conversion fluorescent temperature probe material with a molecular formula of Yb / Tm / Sr:NaGd(MoO 4 ) 2 .

[0022] The preparation method of the high-sensitivity up-conversion fluorescent temperature probe material comprises the following steps: (1) adding 0.695 mmol of gadolinium nitrate, 0.2 mmol of ytterbium nitrate, 0.005 mmol of thulium nitrate, 0.1 mmol of strontium nitrate, and 1 mmol of sodium carbonate Added into 8 ml of deionized water, stirred for 30 minutes to obtain a transparent solution A; (2) then 0.3 mmol of ammonium molybdate was added to the transparent solution A, and stirred for 30 minutes; (3) kept at a temperature of 100 ° C for 2 hours to obtain Dry gel; (4) Grind the dry gel for 30 minutes, then place it in a muffle furnace, keep it warm at 800° C. for 4 hours, and obtain the final product after cooling with the furnace.

[0023] Such as figure 1 As shown in a, powder X-ray diffraction analysis shows that the obtained prod...

Embodiment 2

[0025] A high-sensitivity up-conversion fluorescent temperature probe material with a molecular formula of Yb / Tm / Sr:NaGd(MoO 4 ) 2 .

[0026] The preparation method of the high-sensitivity up-conversion fluorescent temperature probe material comprises the following steps: (1) adding 0.295 mmol of gadolinium nitrate, 0.6 mmol of ytterbium nitrate, 0.005 mmol of thulium nitrate, 0.1 mmol of strontium nitrate, and 1 mmol of sodium carbonate Added into 8 ml of deionized water, stirred for 30 minutes to obtain a transparent solution A; (2) then 0.3 mmol of ammonium molybdate was added to the transparent solution A, and stirred for 30 minutes; (3) kept at a temperature of 100 ° C for 2 hours to obtain Dry gel; (4) Grind the dry gel for 30 minutes, then place it in a muffle furnace, keep it warm at 800° C. for 4 hours, and obtain the final product after cooling with the furnace.

[0027] Such as figure 1 As shown in b, powder X-ray diffraction analysis shows that the obtained prod...

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Abstract

The invention belongs to the field of inorganic luminescent materials, and discloses a high-sensitivity upconversion fluorescence temperature probe material. The molecular formula of the probe material is Yb / Tm / Sr:NaGd (MoO4)2. The high-sensitivity upconversion fluorescence temperature probe material has the advantages that a selected fluorescence emission peak has a long distance and excellent screening performances, data processing errors are greatly reduced, molybdenum serves as a substrate, crystal field environments around rare earth ions are adjusted by the aid of alkaline earth Sr2+, and the variation amplitude of fluorescence intensity ratio is greatly improved, so that the high-temperature detection sensitivity of the upconversion material is achieved.

Description

technical field [0001] The invention belongs to the field of inorganic luminescent materials, in particular to a high-sensitivity up-conversion fluorescent temperature probe material. Background technique [0002] Non-contact fluorescent temperature detection has the characteristics of fast response, high spatial resolution and long-distance measurement, and can be applied to extreme environments such as strong acids and alkalis and fast-moving objects. In the UV-excited dual-activated ion-doped transfer fluorescent material, the higher temperature detection sensitivity can be obtained by utilizing the different temperature-dependent characteristics of different activated ions. However, the co-doping of two different activating ions will easily cause a large number of non-radiative cross-relaxation, resulting in a sharp drop in fluorescence intensity; secondly, due to the shallow penetration depth of ultraviolet light and the background fluorescence of biological tissues, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78G01N21/64
CPCC09K11/7776G01N21/643
Inventor 雷磊徐时清
Owner CHINA JILIANG UNIV
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