High-sensitivity upconversion fluorescence temperature probe material and preparation method thereof

A fluorescence temperature, high sensitivity technology, applied in luminescent materials, material analysis by optical means, material analysis, etc., can solve problems such as large errors and low sensitivity

Active Publication Date: 2018-03-09
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

Method used

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  • High-sensitivity upconversion fluorescence temperature probe material and preparation method thereof
  • High-sensitivity upconversion fluorescence temperature probe material and preparation method thereof
  • High-sensitivity upconversion fluorescence temperature probe material and preparation method thereof

Examples

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Effect test

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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IPC IPC(8): C09K11/78G01N21/64
CPCC09K11/7776G01N21/643
Inventor 雷磊徐时清
Owner CHINA JILIANG UNIV
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