Coumarin-based light-CO2/N2 double stimuli-responsive surfactant, and preparation method thereof

A dual-stimuli-response, surfactant technology, applied in chemical instruments and methods, chemical/physical processes, organic chemistry, etc., can solve problems such as easy separation of surfactants that are difficult to achieve reversible regulation, increased chemical substance emissions and pollution, etc. Achieving a mild method, easy separation, and inexpensive environment

Active Publication Date: 2016-05-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional control methods are generally by changing the temperature or adding chemical agents such as acids, alkalis, salts, and co-surfactants, etc., which inev

Method used

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  • Coumarin-based light-CO2/N2 double stimuli-responsive surfactant, and preparation method thereof
  • Coumarin-based light-CO2/N2 double stimuli-responsive surfactant, and preparation method thereof
  • Coumarin-based light-CO2/N2 double stimuli-responsive surfactant, and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0027] Example 1

[0028] (1) Synthesis of coumarin-based bromodecane

[0029] Add 7-hydroxycoumarin (2g), 1,10-dibromodecane (14.8g) and anhydrous potassium carbonate (3.5g) into a 250ml round bottom flask, and use anhydrous magnesium sulfate dried acetone as solvent Reflux for more than 24h at 55°C. After cooling, the solvent was removed by rotary evaporation. The product was dissolved in 100 ml of deionized water, extracted twice with dichloromethane, and the organic layer was washed with deionized water three times, then dried with anhydrous magnesium sulfate, and then the dichloromethane was removed by rotary evaporation to obtain a yellow-green viscous liquid. The crude product was passed through the column, and the eluent was petroleum ether: ethyl acetate=10:1, and the white solid was 1-coumarinyl-10-bromodecane. The resulting product was characterized by mass spectrometry (see figure 2 ),by figure 2 It is known that the synthesized product is the target product, namel...

Example Embodiment

[0034] Example 2

[0035] (1) Synthesis of coumarin-based bromohexane

[0036] Add 7-hydroxycoumarin (2g), 1,6-dibromohexane (13.1g) and anhydrous potassium carbonate (3.5g) into a 250ml round bottom flask, use anhydrous magnesium sulfate dried acetone as solvent , Reflux reaction at 60℃ for more than 24h. After cooling, the solvent was removed by rotary evaporation. The product was dissolved in 100 ml of deionized water, extracted twice with dichloromethane, and the organic layer was washed with deionized water three times, then dried with anhydrous magnesium sulfate, and then the dichloromethane was removed by rotary evaporation to obtain a yellow-green viscous liquid. The crude product was passed through the column, and the eluent was petroleum ether: ethyl acetate=10:1, and the white solid was 1-coumarin-6-bromohexane.

[0037] (2) Synthesis of coumarin-based tertiary amine

[0038] The 1-coumarin-based-6-bromohexane was reacted with 10 equivalents of dimethylamine hydrochlorid...

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Abstract

The invention relates to a coumarin-based light-CO2/N2 double stimuli-responsive surfactant, and belongs to the field of colloid and interface chemistry. The coumarin-based light-CO2/N2 double stimuli-responsive surfactant is a coumarin-based bicarbonate surfactant. According to the preparation method, the coumarin-based bicarbonate surfactant is obtained by taking a dibromo alkane and 7-hydroxycoumarin as raw materials via O alkylation, ammoniation, and adding of carbon dioxide. The coumarin-based light-CO2/N2 double stimuli-responsive surfactant possesses excellent surfactant performance, is responsive to ultraviolet light, visible light, CO2, and N2, and possesses double stimulative responsiveness.

Description

technical field [0001] The invention relates to a coumarin-based light-CO 2 / N 2 The invention discloses a double stimulus responsive surfactant, which belongs to the technical field of colloid and interface chemistry. Background technique [0002] Surfactants are known as "industrial monosodium glutamate". Many industrial processes, such as crude oil recovery, soil remediation, emulsion polymerization, food processing, pharmaceutical preparation, etc., require the use of surfactant-stabilized systems. Surfactants are used in these systems It is used to solubilize hydrophobic organic matter, stabilize gas-liquid or liquid-liquid interface, etc., but in most cases, it only works at a certain stage, and it is often difficult to separate after the process is over. [0003] The stimuli-responsive surfactant is to trigger the change of the molecular structure of the surfactant in the aqueous solution through a certain method, so that the corresponding surface tension will chang...

Claims

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Application Information

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IPC IPC(8): B01F17/32B01F17/16C07D311/16C09K23/32C09K23/16
Inventor 蒋建中郑饶君马宇萱
Owner JIANGNAN UNIV
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