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Dye/rare earth organic framework composite material for physiological temperature detection and preparation method of composite material

A technology of rare earth organic and composite materials, applied in the direction of physical/chemical change thermometers, thermometers, luminescent materials, etc., can solve the problems of low energy transfer efficiency, low fluorescence intensity, and low sensitivity of rare earth organic frameworks, and achieve self-calibration The effect of detection, high sensitivity, and high yield

Active Publication Date: 2014-09-10
浙江富昇科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the sensitivity of rare earth organic frameworks applied in the physiological temperature range is relatively low, mainly because rare earth ions are easy to transfer energy back to organic ligands in the physiological range, and the energy transfer efficiency between rare earth ions is relatively low, resulting in its fluorescence Intensity ratio changes little with temperature

Method used

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  • Dye/rare earth organic framework composite material for physiological temperature detection and preparation method of composite material
  • Dye/rare earth organic framework composite material for physiological temperature detection and preparation method of composite material
  • Dye/rare earth organic framework composite material for physiological temperature detection and preparation method of composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The organic ligand of tetracarboxylic acid is quaterphenyl-3,5,3′,5′-tetracarboxylic acid, and the synthetic route of the dye / rare earth organic framework composite material of perylene as the dye is as follows:

[0021] Add 0.1mmol of perylene dye to 20ml of N,N-dimethylformamide solvent to make a concentration of 5×10 -3 mol L -1 solution; 0.27mmol of europium nitrate and 0.09mmol of quaterphenyl-3,5,3′,5′-tetracarboxylic acid organic ligands were dissolved in the above dye solution, and then 1ml of ethanol, 400μl of acetic acid and 1.5ml of Ion water was made into a mixed solution, and then put into a closed reaction kettle, reacted at a constant temperature of 80°C for 48h, filtered, and washed with N,N-dimethylformamide solvent to obtain a dye / rare earth organic framework composite material with a yield of 70 %.

[0022] The obtained dye / rare earth organic framework composite is light yellow transparent crystal, and the crystal has good stability in most organic ...

Embodiment 2

[0026] The tetracarboxylic acid organic ligand is 4,4-([1,1'-biphenyl]-4,4'-diyl)bis(pyridine-2,6-dicarboxylic acid), and the dye is pyrene dye / rare earth The synthetic route of the organic framework composite is as follows:

[0027] Add 0.5mmol pyrene dye to 25ml N,N-dimethylacetamide solvent to make a concentration of 2×10 -2 mol L -1 solution; 0.3375 mmol terbium nitrate and 0.1125 mmol 4,4-([1,1'-biphenyl]-4,4'-diyl) bis(pyridine-2,6-dicarboxylic acid) organic ligands were dissolved in Add 1.25ml of ethanol, 625μl of acetic acid and 1.75ml of deionized water to the above dye solution to make a mixed solution, then put it in a closed reaction kettle, react at a constant temperature of 120°C for 48h, filter, and use N,N-dimethyl Washing with acetamide solvent, the dye / rare earth organic framework composite material was obtained with a yield of 65%.

[0028] The obtained dye / rare earth organic framework composite is colorless and transparent crystal, and the crystal has go...

Embodiment 3

[0030] The tetracarboxylic acid organic ligand is 4-(3'',5''-dicarboxylic acid)-([1,1':4',1''-terphenyl]-4-yl)pyridine-2,6 -dicarboxylic acid, the synthetic route of the dyestuff / rare earth organic framework composite material that dyestuff is rhodamine B is as follows:

[0031] Add 0.01mmol rhodamine B dye to 10ml N,N-diethylacetamide solvent to make a concentration of 1×10 -3 mol L -1solution; 0.135mmol terbium acetate and 0.045mmol 4-(3'',5''-dicarboxylic acid)-([1,1':4',1''-terphenyl]-4-yl)pyridine- Dissolve 2,6-dicarboxylic acid organic ligands in the above dye solution, add 500 μl ethanol, 175 μl acetic acid and 750 μl deionized water to make a mixed solution, then put it into a closed reaction kettle, and react at a constant temperature of 40°C for 240 hours, Filter and wash with N,N-diethylacetamide solvent to obtain dye / rare earth organic framework composite material with a yield of 60%.

[0032] The obtained dye / rare earth organic framework composites are pink cry...

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Abstract

The invention discloses a dye / rare earth organic framework composite material for physiological temperature detection. The composite material has a general structural formula as follows: LnLDye, wherein Ln is a rare earth element-europium or terbium; L is quaterphenyl-3,5,3',5'-tetracarboxylic acid, 4,4-([1,1'-biphenyl]-4,4'-biradical)bis(pyridine-2,6-dicarboxylic acid), 4-(3'',5''-dicarboxylic acid)-([1,1':4',1''-terphenyl]-4-yl)pyridine-2,6-dicarboxylic acid, 2',3''-dimethyl-[1,1':4,1':4',1''-quaterphenyl]-3,3'',5,5''-tetracarboxylic acid or 2'-methyl-[1,1':4,1':4',1''-quaterphenyl]-3,3'',5,5''-tetracarboxylic acid; Dye is an organic dye-perylene, pyrene, rhodamine B or coumarin. The composite material is prepared by adopting a solvothermal reaction method and is simple in process, high in yield and good in stability; in addition, the composite material has characteristic luminescence peaks of rare earth ions and dye molecules at the same time, the strength ratio of the two peaks and the temperature form a relatively good linear relation at 20-80 DEG C, self-calibration temperature detection can be realized, and relatively high sensitivity is achieved.

Description

technical field [0001] The invention relates to a dye / rare earth organic framework composite material for detecting physiological temperature and a preparation method thereof. Background technique [0002] Temperature is a crucial physical parameter in scientific research and industrial applications, and related detection instruments and materials have been widely used in life. Common thermometers are liquid-filled glass thermometers based on thermally expanding materials, and thermocouple thermometers based on the Seebeck effect. But these traditional thermometers are not suitable for many fields, such as submicron-scale objects, temperature detection of fast-moving objects, and detection of intracellular temperature. The dynamics and chemical reactions of most molecules in cells are controlled by temperature. Therefore, accurate detection of the temperature of living cells, especially cancer cells, can promote the research and development of cell biology and pharmacy. Th...

Claims

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Application Information

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IPC IPC(8): C09K11/06G01K11/14
Inventor 崔元靖宋瑞静张格格郁建灿杨雨钱国栋
Owner 浙江富昇科技有限公司
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