Intelligent nanometer container capable of realizing reversible movement of macrocyclic molecules under stimulation of pH values and preparation method thereof

A nano-container and intelligent technology, applied in the field of material science, can solve problems such as inability to realize re-closing, and achieve the effect of wide application, simple operation, and good application prospects

Inactive Publication Date: 2016-10-05
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this system is irreversible and can only realize the "opening" of the molecular valve, that is, the

Method used

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  • Intelligent nanometer container capable of realizing reversible movement of macrocyclic molecules under stimulation of pH values and preparation method thereof
  • Intelligent nanometer container capable of realizing reversible movement of macrocyclic molecules under stimulation of pH values and preparation method thereof
  • Intelligent nanometer container capable of realizing reversible movement of macrocyclic molecules under stimulation of pH values and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0034] 1. Preparation of Mesoporous Silica Microspheres

[0035] Mix 0.5g cetyltrimethylammonium bromide (CTAB), 1.75mL 2mol / L NaOH solution with 240mL H 2 O mixed, heated to 80 °C under mechanical stirring (500 rpm), and kept for 30 min to activate CTAB. Add 2.5 mL tetraethyl orthosilicate (TEOS) dropwise, and a white precipitate forms within 10 min under vigorous stirring. After reacting at 80°C for 2 hours, filter while hot, wash the product thoroughly with water and methanol, and dry it in vacuum at 70°C.

[0036] Weigh 0.5 g dry solid, ultrasonically disperse in a mixed solution of 100 mL isopropanol and 5 mL concentrated hydrochloric acid, reflux at 60 °C for 4 h, centrifuge, wash thoroughly with water and methanol, and dry in vacuum at 70 °C to obtain mesoporous silica microspheres ( MCM-41).

[0037] 2. Surface modification and molecular assembly of mesoporous silica

[0038] 200 mg of vacuum-dried MCM-41 was ultrasonically dispersed in 15 mL of anhydrous toluene. ...

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Abstract

The invention discloses an intelligent nanometer container capable of realizing reversible movement of macrocyclic molecules under stimulation of pH values and a preparation method thereof. Compared with conventional nanometer containers, the intelligent nanometer container provided by the invention has the advantages of simple operation, high sensitivity, a wide application scope, etc. The major characteristic of the intelligent nanometer container is that macrocyclic molecules can stay at different positions under different pH values. Controllable release and stage release are realized through reversible movement of macrocyclic molecules on a branched chain, so the intelligent nanometer container has good application prospects.

Description

technical field [0001] The invention belongs to the field of material science, in particular to an intelligent nano-container capable of reversibly moving a pH-stimulated macrocycle and a preparation method thereof. Background technique [0002] In modern industrial production, metal corrosion causes huge economic losses. Therefore, studying the laws of metal corrosion and solving the damage caused by corrosion to metals has become a major problem that needs to be solved urgently in the national economy. After years of research, a variety of methods to prevent metal corrosion have been developed, among which adding corrosion inhibitors is a relatively efficient method to inhibit metal corrosion. However, with the continuous deepening of research and the rapid development of science and technology, people's requirements for corrosion inhibitors are getting higher and higher, and the traditional method of simply adding corrosion inhibitors to the medium can no longer meet peop...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30
Inventor 傅佳骏王明东刘梦阳刘影孙广平丁晨迪
Owner NANJING UNIV OF SCI & TECH
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