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Nano tube of cross linked polyphosphonitrile and preparation method thereof

A technology of nanotubes and polyphosphazene, which is applied in the field of cross-linked polyphosphazene nanotubes and its preparation, can solve the problems of cumbersome equipment and achieve good thermal stability and simple process

Inactive Publication Date: 2007-05-02
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires careful design of the coaxial capillary and the appropriate voltage applied to it, cumbersome equipment, and still requires an inert liquid as a template to support the prepolymer or sol-gel

Method used

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  • Nano tube of cross linked polyphosphonitrile and preparation method thereof
  • Nano tube of cross linked polyphosphonitrile and preparation method thereof
  • Nano tube of cross linked polyphosphonitrile and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 0.5 g (1.44 mmol) hexachlorocyclotriphosphazene and 1.08 g (4.32 mmol) 4,4'-dihydroxydiphenyl sulfone into a 500 ml flask, then add 200 ml of anhydrous tetrahydrofuran, stir to dissolve, and then Add 0.87 g (8.64 mmol) of triethylamine in 50 ml of anhydrous tetrahydrofuran solution into the above reactor, and use an ultrasonic cleaner to vigorously stir the reaction for half an hour at 25 ° C. After the reaction is completed, filter the crude The product was washed three times with tetrahydrofuran, then three times with deionized water, and finally dried in a vacuum oven for 24 hours to obtain 1.17 g of cross-linked polyphosphazene nanotubes, with a yield of 92% based on hexachlorocyclotriphosphazene.

[0023] Fig. 1 is the transmission electron micrograph of gained crosslinked polyphosphazene nanotube, Fig. 2 is the high-resolution transmission electron microscope photograph of crosslinked polyphosphazene nanotube, Fig. 3 is the field emission scanning electron micr...

Embodiment 2

[0029] Add 0.5 g (1.44 mmol) hexachlorocyclotriphosphazene and 1.08 g (4.32 mmol) 4,4'-dihydroxydiphenyl sulfone into a 500 ml flask, then add 75 ml of anhydrous tetrahydrofuran, stir to dissolve, and then Add 0.87 g (8.64 mmol) of triethylamine in 20 ml of anhydrous tetrahydrofuran to the above reactor, and react with vigorous mechanical stirring for 1 hour at 25 ° C. After the reaction is completed, filter the crude product with tetrahydrofuran Washed three times, then washed three times with deionized water, and finally dried in a vacuum oven for 24 hours to obtain 1.20 g of cross-linked polyphosphazene nanotubes, with a yield of 94% based on hexachlorocyclotriphosphazene. Electron microscope photos show that nanotubes are single-walled amorphous structures with a diameter of 15-25 nanometers, an aspect ratio of 20-40, and a wall thickness of 5-10 nanometers. Spectral analysis shows that its structure is hexachlorocyclotriphosphazene and 4,4 The cross-linked condensation st...

Embodiment 3

[0031] The equipment and preparation process described in Example 1 were used, except that the reaction temperature was carried out at the reflux temperature of tetrahydrofuran, and the yield was 89% based on hexachlorocyclotriphosphazene. The analysis of the experimental results shows that the nanotube is a single-walled amorphous structure with a diameter of 60-80 nanometers, an aspect ratio of 50-60, and a wall thickness of 15-20 nanometers. Its structure is hexachlorocyclotriphosphazene and 4,4'- The cross-linked condensation structure of dihydroxydiphenyl sulfone.

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Abstract

The present invention discloses a cross-linked polyphosphzene nano tube and its preparation method. Said invention provide sits chemical structure formula, its tube diameter is 10-80 nano, length-to-diameter ratio is 20-100, and wall thickness is 3-25 nano, it has single-wall unrystallized structure. It is made up by adopting hexachlorocyclotriphosphazene and 4,4'-dihydroxy diphenylsulphone and making them implement cross-linking condensation reaction under the action of acid-binding agent triethylamine. Besides, said invention also provides its extensive application range.

Description

technical field [0001] The invention relates to an organic nanotube and a preparation method thereof, in particular to a cross-linked polyphosphazene nanotube and a preparation method thereof. Background technique [0002] In 1991, Japanese scientist S. Iijima first discovered carbon nanotubes on the cathode by means of arc discharge evaporation (document 1. S. Iijima, Nature 354, 56 (1991)). Theoretical and experimental studies have shown that nanotubes have unique mechanical, electrical and optical properties, which make them have good application prospects in nanoelectronic devices, optoelectronic devices, biomedical materials, magnetic materials, gas storage materials, and high-performance catalysts. For more than ten years, a large number of inorganic, organic and organic-inorganic nanotubes have been synthesized. Since the tubular structure of molecular size plays a variety of biological functions in nature, and due to the ease of modification of organic matter, those...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G79/04
Inventor 朱路唐小真
Owner SHANGHAI JIAOTONG UNIV
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