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Dye-loaded metal-organic framework material for multi-parameter fluorescence temperature sensing, and preparation method thereof

A fluorescence temperature, organic framework technology, applied in the field of dye-loaded metal-organic framework materials that can be used for multi-parameter fluorescence temperature sensing and its preparation, can solve the problem of limited temperature measurement parameters, and achieves easy dissolution and expansion. The breadth of materials, the effect of improving the luminous efficiency

Active Publication Date: 2020-05-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the emission characteristics of rare earth metals, the emission peak position hardly moves with temperature, which makes the temperature measurement parameters limited to fluorescence intensity

Method used

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  • Dye-loaded metal-organic framework material for multi-parameter fluorescence temperature sensing, and preparation method thereof
  • Dye-loaded metal-organic framework material for multi-parameter fluorescence temperature sensing, and preparation method thereof
  • Dye-loaded metal-organic framework material for multi-parameter fluorescence temperature sensing, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Using zinc nitrate and 6,6'-[[2,2-bis[(6-carboxy-2-naphthyl)oxy]methyl]-1,3-propanediol]bis(oxygen)]-bis-2-naphthalene Formic acid, a metal-organic framework material synthesized by a solvothermal method, and its specific synthetic route is as follows:

[0030] 0.1 mmol of zinc nitrate and 0.1 mmol of 6,6'-[[2,2-bis[(6-carboxy-2-naphthyl)oxy]methyl]-1,3-propanediol]bis(oxygen)] - bis-2-naphthoic acid was dissolved in 1.4mL DMF and 0.6mL H 2 O mixed solvent, then the solution was packaged in a 5mL glass bottle, and placed in an oven at 110°C for 48h. Cooled to room temperature, washed 3 times with DMF to obtain colorless needle-like metal-organic framework material Zn 3 (L) 2 ·(DMF) 5.5 ·(H 2 O) 7 . Put 100mg of this crystal into 0.1mol L -1 DMF solution of the cationic dye 4-[2-[4-(diethylamino)phenyl]vinyl]-1-picoline. Put the mixture into a 15mL glass bottle and place it in an oven at 60°C for 7 days, take it out, remove the dye solution by filtration, wash 3...

Embodiment 2

[0039] Using zinc nitrate and 6,6'-[[2,2-bis[(6-carboxy-2-naphthyl)oxy]methyl]-1,3-propanediol]bis(oxygen)]-bis-2-naphthalene Formic acid, a metal-organic framework material synthesized by a solvothermal method, and its specific synthetic route is as follows:

[0040] 0.1 mmol of zinc nitrate and 0.1 mmol of 6,6'-[[2,2-bis[(6-carboxy-2-naphthyl)oxy]methyl]-1,3-propanediol]bis(oxygen)] - bis-2-naphthoic acid was dissolved in 1.4mL DMF and 0.6mL H 2 O mixed solvent, then the solution was packaged in a 5mL glass bottle, and placed in an oven at 110°C for 48h. Cooled to room temperature, washed 3 times with DMF to obtain colorless needle-like metal-organic framework material Zn 3 (L) 2 ·(DMF) 5.5 ·(H 2 O) 7 . Put 100mg of this crystal into 0.01mol L -1 DMF solution of the cationic dye 4-[2-[4-(dimethylamino)phenyl]vinyl]-1-ethylpyridine. Put the mixture into a 15mL glass bottle and place it in an oven at 60°C for 7 days, take it out, remove the dye solution by filtration,...

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Abstract

The invention discloses a dye-loaded metal-organic framework material for multi-parameter fluorescence temperature sensing, and a preparation method thereof. The chemical formula of the dye-loaded metal-organic framework material is [M(L)x(G)y].(R)n, wherein M is a metal ion, L is a flexible symmetrical organic ligand containing a carboxylic acid group, G is a solvent molecule, and R represents adye molecule in a pore channel. The material is prepared by adopting a solvothermal method, and emits visible light of 500-700 nm under the action of exciting light, and the maximum luminous intensityand the strongest emission wavelength are sensitive to temperature (100-200 DEG C) and have a linear relationship with the temperature, so that two-parameter sensing of the material can be realized.The quantum efficiency and the thermal stability of the loaded dye are obviously improved. The material is expected to be practically applied in the aspect of temperature sensing.

Description

technical field [0001] The invention relates to a dye-loaded metal-organic framework material that can be used for multi-parameter fluorescent temperature sensing and a preparation method thereof. Under the action of excitation light, the maximum emission intensity and the strongest emission wavelength of the material are sensitive to temperature, and can realize Dual parameter sensing of temperature. Background technique [0002] Temperature is a very important parameter in the fields of daily life, industrial production and scientific research, how to realize accurate temperature sensing is a promising research topic. At present, commonly used thermometers, especially thermocouple thermometers, are not suitable for harsh conditions, strong electromagnetic fields, and environments requiring high resolution. In addition, a series of dyes with excellent performance and various fluorescent colors are used for temperature sensing, which is one of the most interesting temperatu...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K11/06G01K11/32
CPCC08G83/008C09K11/06G01K11/3213C09K2211/188
Inventor 崔元靖万雅婷钱国栋杨雨
Owner ZHEJIANG UNIV