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Multi-core rare earth organic complex material applied to temperature detection of second biological window and preparation method and application of multi-core rare earth organic complex material

A rare earth organic and window temperature technology, which is applied to compounds containing elements of group 3/13 of the periodic table, thermometers and thermometers with physical/chemical changes, can solve the problems of changing the temperature of the system to be measured and affecting temperature measurement, etc. Achieve the effects of no pollution in equipment cost, improved measurement sensitivity, and low equipment cost

Pending Publication Date: 2022-07-22
CHONGQING UNIV OF POSTS & TELECOMM
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the fluorescent temperature-sensitive materials based on fluorescence intensity ratio temperature measurement are based on the thermal coupling energy level fluorescence intensity ratio of a single rare earth ion or the fluorescence intensity ratio temperature measurement of multiple different ions, but these temperature measurement techniques are limited by temperature. At the same time, most reports adopt the up-conversion luminescence mechanism and use a 980nm laser to excite the sample. A single 980nm laser has a strong self-heating effect, which will change the temperature of the system to be measured, thereby seriously affecting the temperature measurement; Moreover, there are few materials with reported excitation and emission light in the biological window, and there are basically no rare earth organic complex materials.

Method used

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  • Multi-core rare earth organic complex material applied to temperature detection of second biological window and preparation method and application of multi-core rare earth organic complex material
  • Multi-core rare earth organic complex material applied to temperature detection of second biological window and preparation method and application of multi-core rare earth organic complex material
  • Multi-core rare earth organic complex material applied to temperature detection of second biological window and preparation method and application of multi-core rare earth organic complex material

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A preparation method of a polynuclear rare earth organic complex material ((Nd-PDC)) applied to the temperature detection of a second biological window, specifically comprising the following steps:

[0035] (1) 0.2 mmol of rare earth oxide (Nd 2 O 3 ), fully mix it with the nitric acid solution with a mass concentration of 30%, stir until completely dissolved, heat the solution to a viscosity at 70 ° C, then add tertiary water to wash and dilute, repeat until the pH value of the solution is close to 7. Finally, the rare earth nitrate Nd (NO 3 ) 3 aqueous solution.

[0036] (2) 0.6 mmol of ligand (H 2 PDC) was dissolved in a solvent (the solvent was mixed with ethanol and deionized water in a volume ratio of 4:1), and the solution was heated and stirred in a water bath with a magnetic stirrer until the ligand was fully dissolved in the solvent, and the Nd ( NO 3 ) 3 The aqueous solution was mixed with it and continued to heat and stir until it became clear.

[00...

Embodiment 2

[0043] A multinuclear rare earth organic complex material ((Nd) for temperature detection in the second biological window 1.43 Yb 0.57 The preparation method of -PDC)), specifically comprises the steps:

[0044] (1) 0.057 mmol of rare earth oxide (Yb 2 O 3 ) and 0.143 mmol of rare earth oxide (Nd 2 O 3 ) after mixing, fully mix with nitric acid solution with a mass concentration of 30%, stir until completely dissolved, heat the solution to a viscosity at 70 ° C, then add tertiary water to wash and dilute, repeat until the pH value of the solution is close to 7. Finally, the corresponding rare earth nitrate aqueous solution is obtained.

[0045] (2) 0.6 mmol of ligand (H 2 PDC) is dissolved in a solvent (the solvent is mixed with ethanol and deionized water in a volume ratio of 4:1), and the solution is heated and stirred in a water bath with a magnetic stirrer until the ligand is fully dissolved in the solvent, and the rare earth nitrate The aqueous solution was mixed w...

Embodiment 3

[0052] A multinuclear rare earth organic complex material (Gd) for temperature detection in the second biological window 1.45 Nd 0.40 Yb 0.15 The preparation method of -PDC), specifically comprises the steps:

[0053] (1) 0.015 mmol of rare earth oxide (Yb 2 O 3 ), 0.04mmol rare earth oxide (Nd 2 O 3 ) and 0.145 mmol of rare earth oxide (Gd 2 O 3 ), fully mix it with a 30% nitric acid solution until it is completely dissolved, heat the solution to a viscosity at 70°C, then add tertiary water to wash and dilute, repeat for many times until the pH value of the solution is close to 7 , and finally obtain an aqueous solution of rare earth nitrate.

[0054] (2) 0.6 mmol of ligand (H 2 PDC) is dissolved in the solvent (the solvent is mixed with ethanol and deionized water in a volume ratio of 4:1), and the solution is heated and stirred in a water bath with a magnetic stirrer until the ligand is fully dissolved in the solvent, and the rare earth nitric acid The brine solut...

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Abstract

The invention relates to a multi-core rare earth organic complex material applied to temperature detection of a second biological window as well as a preparation method and application of the multi-core rare earth organic complex material, and belongs to the technical field of preparation of multi-core rare earth organic complex materials. The invention discloses a preparation method of a multi-core rare earth organic complex material applied to temperature detection of a second biological window, which mainly comprises the following steps: stirring rare earth nitrate ([Ln (NO3) 3], where Ln is any one or more of Gd, Nd or Yb) and pyridine-2, 6-dicarboxylic acid ions (H2PDC < 2->) for clarification, adjusting the pH value to 5-6 to produce white precipitate, and carrying out vacuum drying to obtain the multi-core rare earth organic complex material applied to temperature detection of the second biological window. And carrying out heat preservation treatment in a stainless steel reaction kettle to obtain the polynuclear rare earth organic complex material. The preparation method disclosed by the invention is simple, easy to operate, high in repeatability, low in equipment cost and pollution-free, can be used for preparing a sample at a relatively low temperature, and is suitable for being widely popularized and used.

Description

technical field [0001] The invention belongs to the technical field of preparation of polynuclear rare earth organic complex materials, and relates to a polynuclear rare earth organic complex material used for temperature detection of a second biological window, and a preparation method and application thereof. Background technique [0002] At present, the new crown epidemic is sweeping the world, which makes people put forward higher requirements for the detection of biological tissue temperature; at the same time, different biological tissues and gene expression processes in cells will have slight temperature changes, and the temperature is higher or lower than the maximum temperature. The optimal range can negatively affect biochemical and metabolic processes and lead to disruption of homeostasis and decreased performance, so some diseased tissue cells in biological tissues tend to have a higher temperature than normal cells. Therefore, the temperature difference between ...

Claims

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Application Information

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IPC IPC(8): C07F5/00C07D213/79C07D213/803C09K11/06G01K11/20
CPCC07F5/00C07D213/79C07D213/803C09K11/06G01K11/20C09K2211/182
Inventor 周贤菊伍健周潇李丽江莎相国涛汪永杰
Owner CHONGQING UNIV OF POSTS & TELECOMM
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