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Cyclodextrin-carbon nano tube derivatives and preparation method thereof

A carbon nanotube and cyclodextrin technology, applied in the field of nanomaterials and natural polymers, achieves the effects of good solubility, abundant raw material sources and good application prospects

Inactive Publication Date: 2008-09-17
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many studies on the covalent modification of carbon nanotubes with polymers at home and abroad mainly focus on the synthesis of polymers, and there is no research report on the covalent modification of carbon nanotubes with cyclodextrin.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A β-cyclodextrin-carbon nanotube derivative with a mass content ratio of cyclodextrin and carbon nanotube of about 0.8:1, which is based on ball milling, purification and acidification of the original carbon nanotube, and halogenated Reagent reaction, the carboxylic acid group on the surface of the carbon nanotube is converted into a highly reactive acid halide group, and then reacted with a binary functional organic compound to extend the active functional group from the surface of the carbon nanotube, and then react with the trichloro s-triazine reaction to obtain carbon nanotubes with active chlorotriazine rings on the surface that can react with hydroxyl groups, and finally prepare them through nucleophilic substitution reaction with β-cyclodextrin. The specific preparation method is as follows:

[0036] The carbon nanotubes were first pretreated according to the following steps: 15 stainless steel balls with a diameter of 6-8mm and 25g of unpurified carbon nanotube...

Embodiment 2

[0042] A cyclodextrin-carbon nanotube derivative whose mass content ratio of cyclodextrin and carbon nanotube is about 0.5:1, and its specific preparation method is as follows:

[0043] The carbon nanotubes are firstly pretreated, and the pretreatment method is the same as that of the above-mentioned embodiment 1.

[0044] Then take 16 g of the pretreated carbon nanotubes and add them to 1000 ml of acetone dissolved with 100 g of phosphorus tribromide, stir at 45 ° C for 6 h, and after ultrasonic reaction at 75 ° C for 56 h, centrifuge at a speed of 5000 rpm for 35 min, wash with ether After cleaning, vacuum-dry at 20° C. for 56 hours to obtain carbon nanotubes with acid halide functional groups on the surface.

[0045] Take 10 g of the above-mentioned carbon nanotubes with acid halide functional groups on the surface, add them to 700 ml of N-methylpyrrolidone containing 75 g of 1,3-propanediamine and 25 ml of triethylamine, stir at 30°C for 6 hours, After ultrasonic reaction...

Embodiment 3

[0049] A cyclodextrin-carbon nanotube derivative whose mass content ratio of cyclodextrin and carbon nanotube is about 0.1:1, and its specific preparation method is as follows:

[0050] The carbon nanotubes are firstly pretreated, and the pretreatment method is the same as that of the above-mentioned embodiment 1.

[0051] Then take 1 g of the pretreated carbon nanotubes and add them to 100 ml of toluene dissolved with 1 g of thionyl chloride, stir at 30 ° C for 1 h, and after ultrasonic reaction at 30 ° C for 48 h, centrifuge at a speed of 3000 rpm for 10 min. After carbonization cleaning, vacuum drying at 40° C. for 24 h to obtain carbon nanotubes with acid halide functional groups on the surface.

[0052] Take 0.1 g of the above-mentioned carbon nanotubes with acid halide functional groups on the surface, add them to 100 ml of tetrahydrofuran containing 5 g of diethylene glycol and 1 ml of lutidine, stir at 45 ° C for 1 h, and ultrasonically react at 30 ° C for 12 h , dist...

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Abstract

The invention discloses a cyclodextrin-carbon nanotube derivative, which is characterized in that the rude carbon nanotube is processed with milling, purification and acidification, then the carbon nanotube is reacted with a halogenation reagent; the carboxylic acid radical at the surface of carbon nanotube is transformed to acyl halide radical which has strong reactivity; then the carbon nanotube is reacted with a binary functional group organic compound; the active functional group is extended out of the surface of carbon nanotube and reacted with trichloro-triazine; the carbon nanotube containing the active chlorine triazine ring is obtained, and the active chlorine triazine ring is positioned on the surface of the carbon nanotube and can be reacted with hydroxyl; finally, the invention is prepared by the nucleophilic substitution reaction between the carbon nanotube and the cyclodextrin. In the invention, the mass ratio of cyclodextrin and carbon nanotube is about 0.1-0.8:1. The invention also discloses the preparation method of the cyclodextrin-carbon nanotube derivative. The cyclodextrin-carbon nanotube derivative has the advantages of friendly environment, good solubility in dimethyl sulfoxide, N-methylpyrrolidone, N,N'-dimethylformamide and N,N'-dimethylacetamide, easily satisfied preparation condition, abundant material source and low cost.

Description

technical field [0001] The invention relates to a derivative, in particular to a cyclodextrin-carbon nanotube derivative and a preparation method of the derivative, which belongs to the field of natural polymers and also belongs to the field of nanometer materials. Background technique [0002] In 1991, Japanese scientist Iijima S. discovered carbon nanotubes (Iijima S. Discovery of carbon nano-tubes. Kagaku to Kogyo, 1993, 67(12): 500-506). After more than ten years of development, carbon nanotubes have become an important research frontier of nanotechnology, and its major research results have emerged one after another, occupying a pivotal position in the development of science and technology in the 21st century. The peculiar quasi-one-dimensional hollow tube structure of carbon nanotubes makes it have excellent performance in many aspects such as adsorption, electricity, magnetism, field emission, mechanics, and electrochemistry. However, the extremely poor solubility se...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 浣石柯刚黄风雷谭湘倩仝毅
Owner GUANGZHOU UNIVERSITY
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