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Calabash [7] carbamide aniline nano-supermolecule conducting polymer, method for preparing same and use

A conductive polymer and supramolecular technology, applied in the field of cucurbit [7] urea aniline nano-supramolecular conductive polymer and its preparation, achieving the effect of simple and easy synthesis method and broad application prospects

Inactive Publication Date: 2008-11-19
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is no literature report on the insulating molecular wire wrapped by cucurbituril, but there are related reports on molecular wires based on other types of hosts

Method used

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  • Calabash [7] carbamide aniline nano-supermolecule conducting polymer, method for preparing same and use
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  • Calabash [7] carbamide aniline nano-supermolecule conducting polymer, method for preparing same and use

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preparation example Construction

[0030] The preparation method of the present invention is specifically described as follows:

[0031]

[0032] In the preparation method of the present invention, the solvent water used in the acidic aqueous solution in the preparation process is distilled water. The aniline is reagent pure, and cucurbit[7]uril is synthesized by known techniques. The acidic aqueous solution is one of hydrochloric acid, perchloric acid or sulfuric acid aqueous solution. When the acidic aqueous solution is a hydrochloric acid aqueous solution with a concentration of 1.0-2.2M, the yield of the polymer is the highest. The oxidizing agent is one of ammonium persulfate, sodium persulfate, potassium persulfate, ammonium dichromate or potassium dichromate. The ratio of the amount of said oxidant to aniline may be 1:0.75-1.0. The mixed system of cucurbit[7]urea aniline and oxidizing agent can basically react completely after the reaction time of stirring is 15-24 hours.

[0033] Below by example...

Embodiment 1

[0035] Cucurbit [7] urea aniline nano-supramolecular conductive polymer preparation method 1

[0036]Dissolve 1.0 g of cucurbit[7] urea completely in 30 mL of 1M hydrochloric acid at room temperature, and then mix with 5 mL of 1 M hydrochloric acid solution in which 93 mg of aniline is dissolved (the concentration of hydrochloric acid can be within the range of 1-1.2 M). After the mixture was stirred for 5 hours, 2 mL of ammonium persulfate (0.5 mol / L) solution was added. (The substance ratio of clathrate and ammonium persulfate during the experiment can be within 1.0-1.5) The solution gradually changes from light yellow to light blue, and gradually dark green precipitates out, and the color of the solution deepens and gradually becomes dark blue. green. After 15 hours, the reaction was complete. The dark green precipitate precipitated in the system was collected, washed several times with distilled water, and dried in vacuum to obtain a dark green powdery solid (yield: 80%,...

Embodiment 2

[0039] Cucurbit [7] urea aniline nano-supramolecular conductive polymer preparation method 2

[0040] 1.0 g of cucurbit [7] urea was completely dissolved in 30 mL of 3M hydrochloric acid solution at room temperature, and then mixed with 5 mL of 3M hydrochloric acid solution in which 93 mg of aniline was dissolved. After the mixture was stirred for 7 hours, 2 mL of ammonium persulfate (0.5 mol / L) solution was added. The solution gradually changed from light yellow to light blue, and gradually dark green precipitated out, and the color of the solution deepened, gradually turning into dark green. After 24 hours, the reaction was complete. The dark green precipitate precipitated in the system was collected, washed several times with distilled water, and dried in vacuum to obtain a dark green powdery solid (yield: 56%, calculated as aniline monomer).

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Abstract

The invention relates to a novel nano supermolecular conductive polymer, a method for preparing the same and an application of the same. The novel nano supermolecular conductive polymer is obtained by polymerization of cucurbit (7) urea and aniline in water solution. The synthetic process of the novel nano supermolecular conductive polymer is completely performed in water phase, and the whole process is easy and feasible. As shown by the results of AFM and TEM experiments, the cucurbit (7) urea and aniline nano supermolecular conductive polymer takes the form of one dimensional nanometer linear aggregate. Moreover, compared with polyaniline synthesized by the prior art, the electrochemic property of the nano supermolecular conductive polymer is obviously different. Due to the stabilization of the cucurbit urea on cationic free radicals, the cucurbit (7) urea and aniline nano supermolecular conductive polymer can perform reversible redox process within wide pH value range. The nano supermolecular conductive polymer has wide application prospect in the nano supermolecular material technical field.

Description

【Technical field】 [0001] The invention belongs to the technical field of nano supramolecular materials, and relates to cucurbit [7] urea aniline nano supramolecular conductive polymer and a preparation method thereof. The invention prepares the water-soluble cucurbit [7] aniline nanometer supramolecular conductive polymer through the mixture of cucurbit [7] urea and aniline in the water phase. The compound can be used as a nanoscale molecular wire with an insulating layer, and has broad application prospects in the technical field of nanometer materials. 【Background technique】 [0002] The discovery and use of electricity brought human society into a new era. As a carrier of electric energy, wires are products that can be seen everywhere in people's lives. In order to reduce the loss of electric energy in the process of transmission, people wrap the conductive copper wire with an insulating shell to become an insulated wire for daily use. As early as the 1940s, it was gen...

Claims

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Application Information

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IPC IPC(8): C08G73/02
Inventor 刘育史珺陈湧
Owner NANKAI UNIV
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