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Organometallic compound sensing material and preparation and application thereof

A technology for organic compounds and sensing materials, applied in lithium organic compounds, analytical materials, material analysis by electromagnetic means, etc., can solve the problem of few chemical sensors, and achieve the effect of simple synthesis, low cost and high yield

Inactive Publication Date: 2013-09-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few research reports on the use of metal organic compounds as chemical sensors in the world.

Method used

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  • Organometallic compound sensing material and preparation and application thereof
  • Organometallic compound sensing material and preparation and application thereof
  • Organometallic compound sensing material and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Weigh 0.18g of lithium chloride and 0.22g of 1,4-naphthalene dicarboxylic acid dissolved in 16ml of N,N'-dimethylformamide and 8ml of tetrahydrofuran mixed solution, magnetic stirring to fully dissolve, and then mix the solution Transfer to a 50ml stainless steel reaction kettle lined with polytetrafluoroethylene, crystallize in a synthesis oven at 150°C for 72 hours, and cool naturally to room temperature.

[0032] 2. Suction filter the product, wash with N,N'-dimethylformamide, and dry under vacuum at 50°C for 24 hours to obtain the target product.

[0033] 3. Sensing performance test: Take 0.06g of the target product, put it in 10ml of N,N'-dimethylformamide, and ultrasonically oscillate for 1 hour to make the product evenly dispersed in the solvent. Use a microsampler to take 10 μl of the ultrasonic solution and drop it on the surface of the wafer, heat and evaporate the solvent to obtain a modified QCM wafer. Processing conditions: Vacuumize the 0.5L airtight d...

Embodiment 2

[0035] 1. Weigh 0.17g of lithium chloride and 0.21g of 1,4-naphthalene dicarboxylic acid dissolved in 18ml of N,N'-dimethylformamide and 6ml of tetrahydrofuran mixed solution, magnetic stirring to fully dissolve, and then mix the solution Transfer to a 50ml stainless steel reaction kettle lined with polytetrafluoroethylene, crystallize in a synthesis oven at 140°C for 48 hours, and cool naturally to room temperature.

[0036] 2. Suction filter the product, wash it with N,N'-dimethylformamide, and dry it under vacuum at 60°C for 16 hours. The obtained crystal is determined to be consistent with the target product by X'Pert PRO powder X-ray diffractometer. Two have the same diffraction pattern, see Figure 5 .

[0037] The preparation process of the invention is simple, the cost is low, and a class of novel metal organic compounds can be prepared under mild conditions. The prepared material has good solvent molecule and carbon dioxide sensing properties, and has a regular resp...

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Abstract

The invention relates to an organometallic compound sensing material and a preparation and an application thereof, and the organometallic compound is an organometallic skeletal compound formed by coordination of lithium salts and 1,4-naphthalene dicarboxylic acid, has an infinite-extending three-dimensional structure accumulated by two-dimensional layered structures, belongs to space group P2(1) / c, and belongs to the monoclinic system; the structural formula is Li2(1,4-ndc) (DMF), and the molecular formula of the crystal is C15H13Li2NO5, wherein the coordination of lithium has a twisted tetrahedron configuration; the solvent-accessible empty free volume of the compound is 3.9% of the total volume. The material prepared by the invention has good sensing performance for solvent molecules and carbon dioxide, has response regularity for solvent molecules and carbon dioxide with different concentrations at normal temperature and normal pressure, and has high sensitivity, good selectivity, stable performance, and easy regeneration.

Description

technical field [0001] The invention relates to a preparation method of a metal organic compound and its sensing performance to solvent molecules and carbon dioxide. Specifically, the metal organic compound is prepared by controlling synthesis conditions, and has good sensing performance to solvent molecules and carbon dioxide. Background technique [0002] Metal-organic compounds generally refer to metal-organic framework crystal materials with periodic network structures formed by self-assembly of organic molecular ligands and metal ions. Its crystal structure exhibits different topologies due to the different coordination modes of metals and ligands. The one-dimensional, two-dimensional or three-dimensional space formed by this material has an infinite network structure. Due to its unique pore structure, large specific surface area and selective adsorption of small molecules, its research has been highly valued by researchers from all over the world, and has achieved rap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F1/02G01N27/00
Inventor 孙立贤姜春红徐芬张箭赵军宁
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI