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A preparation method of poly(3,4-ethylenedioxythiophene) film with controllable pore size

An ethylenedioxythiophene and thin film technology, which is applied to electrolytic components, electrolytic organic production, electrolytic process and other directions, can solve the problems of inability to control polyaniline porous films, environmental pollution, etc., and achieve good mechanical properties, simple preparation method, and good electrical properties. performance effect

Inactive Publication Date: 2018-11-06
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention utilizes organic solvents to extract organic dyes from poly(3,4-ethylenedioxythiophene) films to obtain poly(3,4-ethylenedioxythiophene) porous films. The above method requires the use of organic dyes and organic solvents , has great pollution to the environment, and the pore size of the poly(3,4-ethylenedioxythiophene) porous film can only be regulated by the scan rate of cyclic voltammetry, but cannot be used for electrochemical synthesis methods such as constant current or constant potential. Controlling Pore Size of Polyaniline Porous Film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Dissolving the agar into an aqueous solution with a concentration of 4%, taking 3mL of the agar aqueous solution, 2g of fatty acid sugar esters, and 45mL of peanut oil, stirring and mixing evenly at 60°C, and centrifuging to obtain agar nanoparticles;

[0018] 2) Add 0.15 g of the agar nanoparticles obtained in step 1) into 20 mL of water, stir for 10 minutes, immerse the ITO conductive glass working electrode in it for 5 minutes, then take out the ITO conductive glass working electrode, and dry it at 50 ° C;

[0019] 3) Disperse 1mmol of 3,4-ethylenedioxythiophene monomer and 1mmol of sodium dodecylbenzenesulfonate in 50mL of water, and mix saturated calomel electrode reference electrode, platinum sheet counter electrode and ITO conductive glass working electrode placed in it, and electrochemically synthesized by constant potential method at room temperature, the working electrode potential is 1.3V, and the polymerization time is 20 minutes;

[0020] 4) Peel off the...

Embodiment 2

[0022] 1) Dissolving the agar into an aqueous solution with a concentration of 6%, taking 3 mL of the agar aqueous solution, 2 g of fatty acid sugar esters, and 45 mL of peanut oil, stirring and mixing at 60° C., and centrifuging to obtain agar nanoparticles;

[0023] 2) Add 0.3 g of the agar nanoparticles obtained in step 1) into 20 mL of water, stir for 5 minutes, immerse the stainless steel sheet working electrode in it for 5 minutes, then take out the stainless steel sheet working electrode, and dry it at 50 ° C;

[0024] 3) Disperse 2mmol of 3,4-ethylenedioxythiophene monomer and 4mmol of sodium dodecylsulfonate in 50mL of water, place a saturated calomel electrode as a reference electrode, a platinum sheet counter electrode, and a stainless steel sheet working electrode Among them, the electrochemical synthesis was carried out by constant current method at room temperature, and the electrolysis current was 5mA / cm 2 , the polymerization time is 25 minutes;

[0025] 4) Pe...

Embodiment 3

[0027] 1) Dissolving the agar into an aqueous solution with a concentration of 0.5%, taking 3mL of the agar aqueous solution, 2g of fatty acid sugar esters, and 45mL of peanut oil, stirring and mixing at 60° C., and centrifuging to obtain agar nanoparticles;

[0028] 2) Add 0.4 g of the agar nanoparticles obtained in step 1) into 20 mL of water, stir for 8 minutes, immerse the working electrode in it for 5 minutes, then take out the gold sheet working electrode and dry it at 50°C;

[0029] 3) Disperse 2mmol of 3,4-ethylenedioxythiophene monomer and 4mmol of sodium p-toluenesulfonate in 50mL of water, place a saturated calomel electrode reference electrode, a platinum sheet counter electrode, and a gold sheet working electrode in it, Electrochemical synthesis was carried out by constant current method at room temperature with an electrolysis current of 3mA / cm 2 , the polymerization time is 30 minutes;

[0030] 4) Peel off the composite film of poly(3,4-ethylenedioxythiophene) / ...

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Abstract

The invention discloses a preparation method for a pore diameter-controlled poly(3,4-ethylenedioxythiophene) thin film. The preparation method comprises the following steps: firstly, preparing agar nanoparticles with different grain sizes; coating the surface of a working electrode with the agar nanoparticles; polymerizing a 3,4-ethylenedioxythiophene monomer on the working electrode by virtue of an electrochemical polymerization method to obtain a composite thin film of poly(3,4-ethylenedioxythiophene) / agar nanoparticles on the surface of the electrode; then peeling the thin film of poly(3,4-ethylenedioxythiophene) / agar nanoparticles from the surface of the electrode; soaking the thin film in hot water to remove the agar nanoparticles to obtain the porous poly(3,4-ethylenedioxythiophene) thin film. The poly(3,4-ethylenedioxythiophene) thin film disclosed by the invention is controllable in pore diameter and has excellent mechanical and electrical performances, and the preparation method of the poly(3,4-ethylenedioxythiophene) thin film is simple, complex equipment is not needed, organic solvents are not needed, and the environment is not polluted.

Description

technical field [0001] The invention relates to a preparation method of a poly(3,4-ethylenedioxythiophene) film with controllable aperture, belonging to the field of polymer functional materials. Background technique [0002] Poly(3,4-ethylenedioxythiophene) is a conductive polymer. Its molecular structure determines that it has the advantages of high conductivity, good chemical stability, high temperature resistance, and high light transmission performance. It has been used in solar cells, transparent Conductive films, optoelectronic devices and other fields. The synthesis methods of poly(3,4-ethylenedioxythiophene) can be divided into chemical oxidation method and electrochemical polymerization method. The chemical oxidation method is to use an oxidizing agent in a solvent system, such as persulfate or ferric salt, to initiate oxidative polymerization of 3,4-ethylenedioxythiophene monomers to obtain powdered poly(3,4-ethylenedioxythiophene ). The electrochemical polymer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B3/00
CPCC25B3/00
Inventor 李亮张桥郑华明刘仿军
Owner WUHAN INSTITUTE OF TECHNOLOGY