A kind of preparation method of polyfluoroaniline nanowire

A technology of polyfluoroaniline and nanowires, applied in the field of material chemistry, to achieve the effect of stable shape control and simple process

Inactive Publication Date: 2016-09-28
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the chemical synthesis of polyfluoroaniline with one-dimensional structure

Method used

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  • A kind of preparation method of polyfluoroaniline nanowire
  • A kind of preparation method of polyfluoroaniline nanowire
  • A kind of preparation method of polyfluoroaniline nanowire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Synthesis of poly-2-fluoroaniline nanowires.

[0022] Add 10 mmol of 2-fluoroaniline monomer into 50 mL of dichloromethane and stir to form a light red emulsion. Another 10 mmol of ammonium persulfate was dissolved in 50 mL of deionized water, and the two solutions were mixed to form a two-phase mixed solution with a clear interface and immiscible with each other. The mixed solution was continuously stirred at room temperature for 24 hours, and a black precipitate formed at the bottom of the cup. The resulting product was washed alternately with deionized water and absolute ethanol several times to neutrality, and placed in an oven at 60° C. for 8 hours to dry to obtain poly-2-fluoroaniline nanowires. The yield was 72.2%. The transmission electron microscope pictures of the product are as follows: figure 1 As shown, the diameter of the nanowire is 10-80 nanometers.

Embodiment 2、3

[0024] Repeat Example 1, but replace dichloromethane with chloroform and carbon tetrachloride, respectively, to obtain poly-2-fluoroaniline nanowires. The yields were 65.1% and 81.6%, respectively.

Embodiment 4

[0025] Example 4: Synthesis of poly-3-fluoroaniline nanowires.

[0026] Add 10mmol of 3-fluoroaniline monomer into 50mL of carbon tetrachloride and stir to form a light red emulsion. Another 10 mmol of potassium persulfate was dissolved in 50 mL of deionized water, and the two solutions were mixed to form a two-phase mixed solution with a clear interface and immiscible with each other. The mixed solution was continuously stirred at room temperature for 24 hours, and a black precipitate formed at the bottom of the cup. The resulting product was washed alternately with deionized water and absolute ethanol several times to neutrality, and placed in an oven at 60° C. for 8 hours to dry to obtain poly-3-fluoroaniline nanowires. The yield was 78.5%. The transmission electron microscope pictures of the product are as follows: figure 2 As shown, the diameter of the nanowire is 20-100 nanometers.

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Abstract

The present invention relates to a polyfluoroaniline nano-wire preparation method, which comprises the following steps: carrying out material preparing: dissolving a fluoroaniline monomer in an organic solvent, wherein the organic solvent and water are immiscible; dissolving an initiator in deionized water, and mixing the two obtained solutions to obtain an immiscible two phase solution with a clear interface; carrying out a constant temperature reaction; washing; and drying. The preparation method has the following characteristics that: the process is simple, large batch synthesis is easily achieved, morphology control of the synthesized material is stable, and the synthesized polyfluoroaniline nano-wires can be used in gas sensitive sensors, biosensors, anti-corrosion coatings, microwave absorbing coatings, super capacitors, secondary batteries, electrocatalysis, electrochromism and other fields.

Description

technical field [0001] The invention relates to a method for preparing nanowires, in particular to a method for preparing polyfluoroaniline nanowires, and belongs to the technical field of material chemistry. Background technique [0002] Polyfluoroaniline is a fluorine-substituted derivative of polyaniline, which is obtained by polymerization of 2-fluoroaniline or poly-3-fluoroaniline monomer. The general structural formula of poly-2-fluoroaniline and poly-3-fluoroaniline is as follows: [0003] [0004] Polyfluoroaniline has a skeleton structure similar to that of polyaniline. At the same time, due to the introduction of strong electron-withdrawing substituents on the benzene ring, the conjugate length of the polymer chain becomes shorter, and the solubility and environmental stability of fluorine-containing polyaniline are better than those of polyaniline. It has been greatly improved, and has certain application prospects in the fields of gas sensors, biosensors, anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02
Inventor 汪元元尹桂林李文英姜来新何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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