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Preparation for soluble poly(3,4-ethylenedioxythiophene)

A ethylenedioxythiophene and soluble technology, which is applied in the field of preparation of soluble polyethylenedioxythiophene, can solve the problems of destroying the photoelectric properties of PEDOT, harsh synthesis conditions, and reducing the conjugated structure, so as to avoid corrosion problems and experimental conditions Low requirements for equipment and equipment, and the effect of increasing solubility

Active Publication Date: 2011-06-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of this product requires anionic polymerization, the synthesis cost is high and the synthesis conditions are relatively harsh, and the introduction of PEO into the main chain reduces the original conjugated structure of PEDOT, which will destroy the original photoelectric properties of PEDOT

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 0.62 g of DBSA to 25 ml of deionized water, stir at a speed of 60 r / min to completely disperse it, and prepare a solution with a molar concentration of 0.076 mol / L. 0.2 ml of monomeric EDOT was added to the above solution. The solution was cooled to 0° C. in an ice-water bath, and stirred at a speed of 30 r / min to prepare a monomer solution. Prepare 10ml of a deionized aqueous solution of ammonium persulfate with a molar concentration of 0.019mol / L, put it in an ice-water bath and cool it to 0°C, and then add the solution uniformly dropwise to the prepared monomer solution within 1 hour , the polymerization reaction was initiated to obtain polyoxyethylene thiophene, the reaction system was stirred in an ice-water bath at 0° C. at a speed of 30 r / min for 48 hours, and then 15 ml of acetone was added to break the emulsion and terminate the reaction. Then, the reaction product was separated by filtration under reduced pressure, and the reaction product was washed thre...

Embodiment 2

[0015] Add 2.48g of DBSA to 25ml of deionized water, and stir it at a speed of 60r / min to completely disperse it to form a solution with a molar concentration of 0.144mol / L. 0.2 ml of monomeric EDOT was added to the above solution. The solution was cooled to 0° C. in an ice-water bath, and stirred at a speed of 30 r / min to prepare a monomer solution. The concentration of the substance to prepare 10ml is 4.75×10 -3 mol / L deionized aqueous solution of ammonium persulfate, put it into an ice-water bath and cool it to 0°C, and then drop this solution evenly into the prepared monomer solution within 1 hour to initiate the polymerization reaction to obtain poly Ethylenedioxythiophene. The reaction system was stirred in an ice-water bath at 0° C. at a speed of 30 r / min for 48 hours, and then 15 ml of acetone was added to break the emulsion and terminate the reaction. Then the reaction product was separated by vacuum filtration, and the reaction product was repeatedly washed 3 time...

Embodiment 3

[0018] Add 0.15 g of DBSA to 25 ml of deionized water, stir at a speed of 40 r / min to completely disperse it, and prepare a solution with a molar concentration of 0.009 mol / L. 0.2 ml of monomeric EDOT was added to the above solution. The solution was cooled to 0° C. in an ice-water bath, and stirred at a speed of 30 r / min to obtain a monomer solution. Prepare 10ml of a deionized aqueous solution of ammonium persulfate with a substance concentration of 0.076mol / L, put it in an ice-water bath and cool it to 0°C, and then add the solution uniformly dropwise to the prepared monosulfate within 1 hour. In the body solution, the polymerization reaction was initiated to obtain polyethylenedioxythiophene. The reaction system was stirred in an ice-water bath at 0° C. at a speed of 30 r / min for 48 hours, and then 15 ml of acetone was added to break the emulsion and terminate the reaction. Then the reaction product was separated by vacuum filtration, and the reaction product was repeate...

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PUM

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Abstract

The invention relates to a preparation method of dissoluble polyethylenedioxythiophene, which pertains to the preparation technique of photoelectric functional material. The course of the method comprises: de-ionizing aqueous solution of dodecyl benzene sulfonic acid is prepared; ethylenedioxy thiophene is added into the solution to prepare monomer solution; de-ionizing aqueous solution of ammonium sulfate or ferric trichloride hexahydrate is prepared; the de-ionizing aqueous solution of ammonium sulfate or ferric trichloride hexahydrate is added into the monomer solution to initiate polymerization; after the reaction is finished and acetone demulsification is added, the reactants are filtered to gain reaction products which are washed repeatedly by using acetone and deionized water to remove unreacted ethylenedioxy thiophene, dodecyl benzene sulfonic acid and ammonium persulfate; the washed reaction products are dried in vacuum and finally dark-blue solid powder of polyethylenedioxythiophene is obtained. The preparation method of the invention has the advantages that: the reaction course is simple and polyethylenedioxythiophene has good solubility in N-N dimethyl formamide, dimethyl sulfoxide, chloroform, etc., as well as eminent photoelectric properties.

Description

technical field [0001] The invention relates to a preparation method of soluble polyethylenedioxythiophene, which belongs to the preparation technology of photoelectric functional materials. Background technique [0002] Polyethylenedioxythiophene [poly(3,4-ethylenedioxythiophene), PEDOT] attracts attention as a new type of conductive material, because compared with other conjugated polymers, PEDOT has high electrical conductivity, thermal stability and chemical, Good characteristics such as electrochemical stability make it an ideal material for polymer light-emitting diodes, solar cells, supercapacitors and other devices. [0003] However, the poor solubility of PEDOT greatly hinders its further popularization and application, so the synthesis of PEDOT with good solubility has become one of the focuses of research in this field. In the 1990s, Germany's Bayer company (trade name Baytron P) polymerized a water-soluble PEDOT in an aqueous solution of polybenzenesulfonic acid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12
Inventor 封伟李瑀
Owner TIANJIN UNIV
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