Dual-rare earth organic frame material with biotemperature and pH multi-detection property

An organic framework and double rare earth technology, applied in luminescent materials, organic chemistry, material analysis through observation of the influence of chemical indicators, etc., can solve the problems of biological temperature detection, single temperature or pH sensing function, etc., to achieve High yield, predictable topology, and good stability

Active Publication Date: 2014-09-17
浙江富昇科技有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] At present, the detection of biological cells is mainly new fluorescent temperature sensing materials, including complexes, organic molecules, inorganic glasses, inorganic-organic hybrid materials, etc., but the temperature and pH fluorescent sensing materials reported so far only have a single Temperature or pH sensing function, cannot detect biological temperature and pH at the same time

Method used

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  • Dual-rare earth organic frame material with biotemperature and pH multi-detection property
  • Dual-rare earth organic frame material with biotemperature and pH multi-detection property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Dissolve a total molar mass of 0.05 mmol of europium nitrate and terbium nitrate in 1 mL of deionized water, the molar ratio of europium nitrate and terbium nitrate is 2:8, and prepare a rare earth metal salt solution with a total molar concentration of 0.05 mol / L .

[0023] 2) Dissolve 0.05 mmol of 4-(3,5-isophthalic acid)-2,6-pyridinedicarboxylic acid and 40 μL of concentrated acid in 8 mL of deionized water to obtain a ligand solution. In the ligand solution, 4 The concentration of -(3,5-isophthalic acid)-2,6-pyridinedicarboxylic acid was 0.006125 mol / L, and the volume ratio of concentrated acid to deionized water was 0.008.

[0024] 3) Mix the rare earth metal salt solution in step 1) and the ligand solution in step 2) in a 25mL reactor, seal it and keep it in an oven at 120°C for 2 days, naturally cool to room temperature, and filter to obtain a double rare earth organic compound. Frame material Eu 0.205 Tb 0.795 L (L is 4-(3,5-isophthalic acid)-2,6-pyridined...

Embodiment 2

[0030] 1) Dissolve europium chloride and terbium chloride with a total molar mass of 0.2 mmol in 1 mL of deionized water, the molar ratio of europium chloride and terbium chloride is 1:9, and the total molar concentration is 0.2 mol / L rare earth metal salt solution.

[0031] 2) Dissolve 0.2 mmol of 3-(3,5-isophthalic acid)-2,6-pyridinedicarboxylic acid and 100 μL of concentrated acid in 10 mL of N,N-dimethylacetamide to obtain the ligand solution, the concentration of 3-(3,5-isophthalic acid)-2,6-pyridinedicarboxylic acid in the ligand solution is 0.02mol / L, the concentration of concentrated acid and organic solvent N,N-dimethylacetamide The volume ratio is 0.01.

[0032] 3) Mix the rare earth metal salt solution in step 1) and the ligand solution in step 2) in a reaction kettle, seal it and keep it in an oven at 160°C for 3 days, cool it down to room temperature naturally, and filter to obtain colorless transparent crystals double rare earth organic framework material Eu 0...

Embodiment 3

[0035]1) Dissolve europium acetate and terbium acetate with a total molar mass of 0.01 mmol in 1 mL of deionized water, the molar ratio of europium acetate and terbium acetate is 1:1, and prepare a rare earth metal salt with a total molar concentration of 0.01 mol / L solution.

[0036] 2) Dissolve 0.01 mmol of 6-(3,5-isophthalic acid)-2,4-pyridinedicarboxylic acid together with 25 μL of concentrated acid in 10 mL of N,N-dimethylacetamide and ethanol 1: 1 Ligand solution is obtained in the mixed solution, the organic ligand concentration in the ligand solution is 0.001mol / L, and the volume ratio of concentrated acid to organic solvent is 0.0025.

[0037] 3) Mix the rare earth metal salt solution in step 1) and the ligand solution in step 2) in a reaction kettle, seal it and keep it in an oven at 80°C for 1 day, cool it down to room temperature naturally, and filter to obtain colorless transparent crystals double rare earth organic framework material Eu 0.495 Tb 0.505 L 3 (L ...

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Abstract

The invention discloses a dual-rare earth organic frame material with biotemperature and pH multi-detection property. The composition of the dual-rare earth organic frame material is as follows: EuxTb1-xLn, wherein x is more than or equal to 0.1 and less than or equal to 0.5, n is equal to 1-3, L is an organic ligand which contains both phthalic acid group and dipicolinic acid group. The dual-rare earth organic frame material is synthesized by virtue of a hydrothermal method. The synthetic method has the advantages of simple process, moderation in condition, easily available raw materials and higher productivity. A product has the characteristic luminous peaks of rare earth europium and terbium, the strength ratio IEu / ITb of the characteristic luminous peaks shows good exponential relation with pH, the pH value of a solution can be detected, and the pH range is 3.9-7.5; the temperature change can be responded under a fixed pH environment, the temperature change shows good linear relation with temperature, and the temperature range is 25-50 DEG C. The dual-rare earth organic frame material disclosed by the invention has the advantages of detection capacity of the biotemperature and the pH, high response speed, high sensitivity and high anti-interference capacity and can be used for effectively realizing the self calibration.

Description

technical field [0001] The invention relates to a double rare earth organic framework material and a preparation method thereof, in particular to a double rare earth organic framework material with multiple detection performances of biological temperature and pH and a preparation method thereof. Background technique [0002] Temperature and pH are two common and very important physical parameters, and various instruments and materials have been designed and invented for their detection. In the field of temperature detection, as a new type of temperature detection method, the optical temperature detection of materials such as metal organic framework materials has broken through the shortcomings of traditional temperature detection such as narrow measurement range and slow response speed, and can detect special conditions such as extremely low temperature environments or biological internal environments. environment, and can respond to temperature through fluorescence intensit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06G01K11/32G01N21/80
Inventor 崔元靖张格格邹文峰郁建灿杨雨王智宇钱国栋
Owner 浙江富昇科技有限公司
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