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Light-magnetism dual stimulus-responsive surfactant

A dual stimulus response, surfactant technology, applied in the field of photo-magnetic dual stimulus response surfactant synthesis, can solve single problems and achieve the effect of expanding the scope of regulation and use

Inactive Publication Date: 2016-09-07
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of stimuli-responsive surfactants, but most of them are single-response, and there are relatively few reports on multiple stimuli-responsive surfactants

Method used

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  • Light-magnetism dual stimulus-responsive surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: the synthesis of surfactant 4-butyl-4'-(trimethylhexyloxyamine) azobenzene bromide ferric trichloride

[0021] (1) Synthesis of 4-butyl-4'-hydroxyazobenzene

[0022] Take 5.32g of 4-butylaniline and add it to a 250mL three-necked flask, add 21mL (10mol / L) of hydrochloric acid to the three-necked flask dropwise with a constant pressure funnel, and drop NaNO 2 Aqueous solution (24.5g, 10mL deionized water), the above mixture was reacted at 0°C for 1-5 hours. Then phenol (3.35 g) with a molar ratio of 1:1 was dissolved in Na 2 CO 3 (20g) solution, the mixed solution was added dropwise to the above mixture with a constant pressure funnel, and reacted for 1 hour. The product was vacuum filtered to obtain the crude product as a brown solid, and the coupled product was obtained.

[0023] (2) Synthesis of 4-butyl-4'-(4-bromohexyloxy)azobenzene

[0024] Weigh 5g of the coupling product and dissolve it in acetone solution, and slowly add it dropwise to the K 2...

Embodiment 2

[0029] Embodiment 2: surface tension performance

[0030] Adopt ring method to measure the surface tension of surfactant, the surface tension curve of surfactant solution before and after ultraviolet light irradiation, see attached image 3 .

Embodiment 3

[0031] Embodiment 3: ultraviolet absorption spectrum

[0032] The surfactant synthesized by the present invention contains an azophenyl group, which will undergo photoisomerization behavior under the irradiation of ultraviolet light and visible light, and will undergo reversible transformation from trans to cis structure under the irradiation of UV and blue light , this change can be characterized by the ultraviolet absorption spectrum, the ultraviolet absorption spectrum of the surfactant is shown in the appendix Figure 4 .

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Abstract

The invention discloses a light-magnetism dual stimulus-responsive surfactant. The surface tension and the contact angle of the surfactant change under the action of light and a magnetic field, in other words, the surfactant has dual stimulus responsibility.

Description

(1) Technical field [0001] The invention relates to a method for synthesizing a light-magnetic double stimulus response type surfactant, which belongs to the field of surfactant synthesis chemistry. (2) Background technology [0002] In recent years, stimuli-responsive surfactants or stimuli-responsive particles and the smart response systems they form have aroused great interest and widespread attention. Under certain stimulation methods, these functional compounds can be converted between surface active and non-surface active, thereby affecting the microscopic and macroscopic properties of the system. In addition, the "switch" of the surface activity of these compounds is also recyclable, which not only endows the material with certain intelligent control properties, but also realizes the repeated utilization of resources, so it has great environmental protection significance. There are many kinds of stimuli-responsive surfactants currently reported, mainly including pH, ...

Claims

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Application Information

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IPC IPC(8): B01F17/18B01F17/42C07C245/08C09K23/18C09K23/42
CPCC07C245/08C09K23/00
Inventor 蒋建中马宇萱杜盛郁陈宇开陈钊炀余诗洁汪良
Owner JIANGNAN UNIV
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