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Polyion liquid acid-base indicator suitable for non-polar solvent and preparation method thereof

A polyionic liquid, non-polar solvent technology, applied in material analysis by observing the effect on chemical indicators, and analysis by chemical reaction of materials, etc., to achieve simple synthesis, wide application prospects, and reaction controllability. Good results

Inactive Publication Date: 2015-12-30
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the research on the polyionic liquid acid-base indicator is still in the stage of continuous development, the polyionic liquid acid-base indicator specially suitable for non-polar solvents has not been reported so far.

Method used

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  • Polyion liquid acid-base indicator suitable for non-polar solvent and preparation method thereof
  • Polyion liquid acid-base indicator suitable for non-polar solvent and preparation method thereof
  • Polyion liquid acid-base indicator suitable for non-polar solvent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A polyionic liquid acid-base indicator suitable for non-polar solvents, its structural formula is shown in formula (3), wherein the ratio of x to y is 3.2:1. Said x is 16, and y is 5.

[0048] The preparation method of the above-mentioned polyionic liquid type acid-base indicator suitable for non-polar solvents is:

[0049] Step a: Carry out water and oxygen removal treatment on the reaction vessel. The water and oxygen removal treatment is as follows: fully dry a clean 150 ml three-neck flask at 90 degrees Celsius for 3 hours, take it out and cool it to room temperature, and inject nitrogen;

[0050] Step b: under nitrogen protection, add 29.60 grams of phthalic anhydride and 50 milliliters of N,N-dimethylformamide into the treated three-necked flask, and stir thoroughly;

[0051] Step c: under nitrogen protection, add 0.13 g of ethylene glycol to the solution obtained in step b, and stir;

[0052] Step d: 18.50 g of epichlorohydrin was added dropwise to the solution...

Embodiment 2

[0060] A polyionic liquid acid-base indicator suitable for non-polar solvents, its structural formula is shown in formula (3), wherein the ratio of x to y is 2.2:1. Said x is 13, and y is 6.

[0061] The preparation method of the above-mentioned polyionic liquid type acid-base indicator suitable for non-polar solvents is:

[0062] Step a: Carry out water and oxygen removal treatment on the reaction vessel. The water and oxygen removal treatment is as follows: fully dry a clean 150 ml three-neck flask at 90 degrees Celsius for 1 hour, take it out and cool it to room temperature, and then blow in nitrogen;

[0063] Step b: under nitrogen protection, add 26 grams of phthalic anhydride and 50 milliliters of N,N-dimethylformamide into the three-necked flask, and stir thoroughly;

[0064] Step c: under nitrogen protection, add 0.15 g of ethylene glycol to the solution obtained in step b, and stir;

[0065] Step d: 16 g of epichlorohydrin was added dropwise to the solution obtained...

Embodiment 3

[0073] A polyionic liquid acid-base indicator suitable for non-polar solvents, its structural formula is shown in formula (3), wherein the ratio of x to y is 2.6:1. Said x is 18, and y is 7.

[0074] The preparation method of the above-mentioned polyionic liquid type acid-base indicator suitable for non-polar solvents is:

[0075] Step a: Carry out water and oxygen removal treatment on the reaction vessel. The water and oxygen removal treatment is as follows: fully dry a clean 150 ml three-necked flask at 90 degrees Celsius for 5 hours, take it out and cool it to room temperature, and inject nitrogen;

[0076] Step b: under nitrogen protection, add 25.50 g of phthalic anhydride and 50 ml of N,N-dimethylformamide into the three-necked flask, and stir thoroughly;

[0077] Step c: under nitrogen protection, add 0.18 g of ethylene glycol to the solution obtained in step b, and stir;

[0078] Step d: 16 g of epichlorohydrin was added dropwise to the solution obtained in step c, s...

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Abstract

The invention provides a polyion liquid acid-base indicator suitable for non-polar solvent and a preparation method thereof. The preparation method includes the steps that ethylene glycol is added into a phthalic anhydride solution under the protection of nitrogen to be stirred; epoxy chloropropane is dropwisely added to the obtained solution for carrying out a stirring reaction; N-methylimidazole is dropwisely added for carrying out a stirring reaction; the obtained mixture is added into acetone to be stirred and settled; obtained sediment is dissolved in deionized water to be dropwisely added to a mixed aqueous solution of methyl orange and methyl blue for carrying out a stirring reaction to be settled; the obtained sediment is repeatedly washed and dried to be added into dichloromethane for stirring, so that a mixture is formed; the obtained mixture is filtered, so that filter liquor is obtained; the obtained filter liquor is subjected to rotary evaporation, the dichloromethane solvent is removed, and vacuum drying is conducted. Considering that the polyion liquid acid-base indicator has good solubility and obvious acid-base indicating behaviors in the non-polar solvent, the polymer can be used in the acid-base indicating field of the non-polar solvent.

Description

technical field [0001] The invention relates to an acid-base indicator in the technical field of chemical industry, in particular to a preparation method of a polyionic liquid-type indicator with an acid-base indicator function in a non-polar solvent. Background technique [0002] An ionic liquid is an ionic compound that is liquid at or near room temperature. Since ionic liquids were first reported 100 years ago, the application of ionic liquids has covered many fields, such as fine chemical industry, separation and purification, electrochemistry, solar cells, biomedicine and so on. In recent years, polyionic liquids developed from ionic liquids have attracted great attention in the fields of polymer chemistry and materials science. Polyionic liquids are polymers with anionic and cationic electrolyte groups on repeating units. Polyionic liquid has the excellent characteristics of ionic liquid, such as low melting point, low vapor pressure, good conductivity, good stabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/682G01N21/80
Inventor 夏于旻罗斌赵华蕾沈佳豪王燕萍
Owner DONGHUA UNIV
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