Rare earth organic framework material for detecting vitamin C and preparation method thereof

A technology of rare earth organic and framework materials, which is applied in organic chemical methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of expensive equipment, complicated operation process, time-consuming operation, etc., achieve low biological toxicity, avoid fluorescent signal, The effect of little damage

Active Publication Date: 2019-08-02
浙江富昇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titration is the most traditional and classic method for detecting vitamin C. Although this method is simple, it is time-consuming and laborious to operate; high-performance liquid chromatography is a method that has developed rapidly in recent years. Good performance, but the equipment is more expensive; the instrument required for the electrochemical method is simple and easy to operate, but the operation process is more complicated

Method used

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  • Rare earth organic framework material for detecting vitamin C and preparation method thereof
  • Rare earth organic framework material for detecting vitamin C and preparation method thereof
  • Rare earth organic framework material for detecting vitamin C and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Using cerium nitrate and 1,1':4',1" terphenyl-2',4,4",5'-tetracarboxylic acid to synthesize rare earth organic framework materials by solvothermal method, the specific synthetic route is as follows:

[0030] Dissolve 0.046 mmol of cerium nitrate and 0.049 mmol of 1,1':4',1" terphenyl-2',4,4",5'-tetracarboxylic acid in 2 mL of N,N-dimethylformamide (DMF) and 9 mL of deionized water, then add 50 μL of concentrated HNO 3 , dubbed into a mixed solution. Then put the mixed solution into the reaction kettle, seal it and place it in an oven, react at a constant temperature of 160°C for 2 days, centrifuge and wash to obtain the rare earth organic framework material [CeL(DMF)(H 2 O)] (DMF) 2 , the yield was 47.1%.

[0031] It can be obtained by single crystal X-ray diffraction analysis, [CeL(DMF)(H 2 O)] (DMF) 2 It has a long-range ordered crystal structure and regular one-dimensional channels, and the channel size is Under the excitation of ultraviolet light, the peak va...

Embodiment 2

[0037] Using cerium chloride and 1,1':4',1 terphenyl-3,3,5,5"-tetracarboxylic acid to synthesize rare earth organic framework materials by solvothermal method, the specific synthetic route is as follows:

[0038] Dissolve 0.056 mmol of cerium chloride and 0.023 mmol of 1,1':4',1 terphenyl-3,3,5,5"-tetracarboxylic acid in 2 mL of N,N-dimethylacetamide (DMA ) and 9 mL of deionized water, then add 50 μL of concentrated HNO 3 , dubbed a mixed solution. Then put the mixed solution into the reaction kettle, seal it and place it in an oven, react at a constant temperature of 180°C for 1 day, centrifuge and wash to obtain the rare earth organic framework material [CeL 2 (DMA)(H 2 O)]·(DMA), the yield was 45.1%.

[0039] By single crystal X-ray diffraction analysis, [CeL 2 (DMA)(H 2 O)]·(DMA) has a long-range ordered crystal structure and regular one-dimensional channels, and the channel size is Under the excitation of ultraviolet light, the peak of the obtained emission spectru...

Embodiment 3

[0044] Using cerium acetate and 1,1':4',1" terphenyl-2',3,3,5,5',5"-hexacarboxylic acid to synthesize rare earth organic framework materials by solvothermal method, and its specific synthesis The route is as follows:

[0045] Dissolve 0.118 mmol of cerium acetate and 0.039 mmol of 1,1':4',1" terphenyl-2',3,3,5,5',5"-hexacarboxylic acid in 2 mL of N,N-di Ethylformamide (DEF) and 8 mL of deionized water, followed by 80 μL of concentrated HNO 3 , dubbed into a mixed solution. Then put the mixed solution into the reaction kettle, seal it and place it in an oven, react at a constant temperature of 120°C for 4 days, centrifuge and wash to obtain the rare earth organic framework material [CeL 3 (DEF)(H 2 O)] (DEF) 2 , and the yield was 40.8%.

[0046] It can be obtained by single crystal X-ray diffraction analysis, [CeL 3 (DEF)(H 2 O)] (DEF) 2 It has a long-range ordered crystal structure and regular one-dimensional channels, and the channel size is Under the excitation of ...

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Abstract

The invention discloses a rare earth organic framework material for detecting vitamin C and a preparation method of the rare earth organic framework material. The rare earth organic framework material is of a long-range ordered crystal structure and is provided with regular pores, and the chemical formula of the rare earth organic framework material is [CeLx(G)(H2O)].(G)n, wherein L is an organic ligand simultaneously containing a tridiphenyl carboxylic acid group, G represents a solvent molecule coordinated with rare earth ions or in a crystal pore, x is equal to 1 to 3, and n is equal to 1 to 4. The rare earth organic framework material is prepared through a solvothermal method; the method is simple and relatively high in yield. The prepared rare earth organic framework material has a good detection effect on the vitamin C; with increase of the amount of the vitamin C, the luminous intensity of the rare earth organic framework material is improved, and the biocompatibility and the thermal stability are high. The rare earth organic framework material is expected to be applied to aspects such as biomedical treatment.

Description

technical field [0001] The invention relates to a rare earth organic framework material and a preparation method thereof, in particular to a rare earth organic framework material for detecting vitamin C and a preparation method thereof. Background technique [0002] Vitamin C (Vitamin C, referred to as VC), also known as L-ascorbic acid, is a particularly effective antioxidant that can capture free oxygen free radicals, reduce melanin, promote collagen synthesis, and adjust skin texture. The antioxidant effect can resist free radical damage to cells and prevent cell mutation. It plays a very important role in the metabolic process of humans, animals and plants. The level of vitamin content is often used as an important indicator for nutritional analysis and disease diagnosis. In recent years, methods for detecting vitamin C mainly include titration, photometric analysis, high performance liquid chromatography, and electrochemical methods. Titration is the most traditional a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/41C07C63/331G01N21/64
CPCC07B2200/13C07C51/418C07C63/331G01N21/6428
Inventor 钱国栋岳丹崔元靖杨雨
Owner 浙江富昇科技有限公司
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