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Polydiphenylamine-4-sulfonic acid dispersed poly 3,4-ethylenedioxythiophene electric-conduction complex, preparation and applications thereof

A technology of ethylenedioxythiophene and polydiphenylamine, which is applied in semiconductor/solid-state device manufacturing, circuits, photovoltaic power generation, etc., can solve the problem of uneven film structure and conduction, high price of polystyrene sulfonic acid, and increased cost of electronic devices and other problems, to achieve the effect of low raw material price, good structure and conductive uniformity, and good application prospects

Active Publication Date: 2018-01-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] PEDOT:PSS has many shortcomings in the application process, such as the relatively high price of dopant polystyrene sulfonic acid, which increases the cost of electronic devices; PSS itself is not conductive, and the amount of dispersion is large, resulting in a large amount of Non-conductive polyanions make the PEDOT:PSS film have structural and conductive inhomogeneity (patent CN 105336867A, Advanced Energy Materials 2017, 7, 1601499), which affects charge transport and low conductivity; strong acidity and corrosion of electrodes, so many people Work on modifying PEDOT:PSS or find other dopants to replace PSS

Method used

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  • Polydiphenylamine-4-sulfonic acid dispersed poly 3,4-ethylenedioxythiophene electric-conduction complex, preparation and applications thereof
  • Polydiphenylamine-4-sulfonic acid dispersed poly 3,4-ethylenedioxythiophene electric-conduction complex, preparation and applications thereof
  • Polydiphenylamine-4-sulfonic acid dispersed poly 3,4-ethylenedioxythiophene electric-conduction complex, preparation and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 2g of diphenylamine-4-sodium sulfonate and dissolve it in deionized water to prepare an aqueous solution with a mass concentration of 7.0%, stir at room temperature for 10 minutes, and adjust its pH value to 2 with hydrochloric acid; add 2.5g of ammonium persulfate; stir at room temperature for 10 hours ; Add 2g monomer 3,4-ethylenedioxythiophene to the above solution, add 4.8g ammonium persulfate while stirring, and stir at room temperature for 36 hours at a stirring speed of 1500 rpm. After the reaction, the obtained aqueous dispersion was dialyzed with a dialysis belt with a molecular weight cut-off of 1000 for 5 days to remove inorganic salts and unreacted monomers to obtain polydiphenylamine-4-sulfonic acid dispersed poly-3,4-ethylenedioxythiophene conductive compound.

Embodiment 2

[0033] Take 4g of diphenylamine-4-sodium sulfonate and dissolve it in deionized water to prepare an aqueous solution with a mass concentration of 7.0%, stir at room temperature for 10 minutes, and adjust its pH value to 2 with hydrochloric acid; add 5.0g of ammonium persulfate; stir at room temperature for 10 hours ; Add 2g monomer 3,4-ethylenedioxythiophene to the above solution, add 4.8g ammonium persulfate while stirring, and stir at room temperature for 36 hours at a stirring speed of 1500 rpm. After the reaction, the obtained aqueous dispersion was dialyzed with a dialysis belt with a molecular weight cut-off of 1000 for 5 days to remove inorganic salts and unreacted monomers to obtain polydiphenylamine-4-sulfonic acid dispersed poly-3,4-ethylenedioxythiophene conductive compound.

Embodiment 3

[0035] Dissolve 5 g of diphenylamine-4-sodium sulfonate in deionized water to prepare an aqueous solution with a mass concentration of 7.0%, stir at room temperature for 10 min, and adjust the pH value to 2 with hydrochloric acid; add 6.2 g of ammonium persulfate; stir at room temperature for 10 h ; Add 2g monomer 3,4-ethylenedioxythiophene to the above solution, add 4.8g ammonium persulfate while stirring, and stir at room temperature for 36 hours at a stirring speed of 1500 rpm. After the reaction, the obtained aqueous dispersion was dialyzed with a dialysis belt with a molecular weight cut-off of 1000 for 5 days to remove inorganic salts and unreacted monomers to obtain polydiphenylamine-4-sulfonic acid dispersed poly-3,4-ethylenedioxythiophene Conductive composite (PEDOT:PDAS).

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Abstract

The invention belongs to the technical field of composite materials, and discloses a polydiphenylamine-4-sulfonic acid dispersed poly 3,4-ethylenedioxythiophene electric-conduction complex, preparation and applications thereof, wherein the complex has a structural formula represented by a formula (I). The preparation method comprises: adding an acid to a diphenylamine-4-sodium sulfonate aqueous solution with a mass concentration of 5.0-10.0%, adjusting the pH value to 2-3, adding an oxidant, carrying out a reaction for 6-12 h to obtain a polydiphenylamine-4-sulfonic acid dispersion liquid, adding a 3,4-ethylenedioxythiophene monomer, adding an oxidant, carrying out a reaction for 12-36 h, and dialyzing the reaction solution to remove the inorganic salts and the un-reacted monomer so as toobtain the electric-conduction complex. According to the present invention, the obtained electric-conduction complex has advantages of high conductivity, good film structure, good electric conductionuniformity, weak acidity relative to PEDOT:PSS and the like, and has good application prospects in perovskite solar cells. The formula (I) is defined in the specification.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a polydiphenylamine-4-sulfonic acid dispersed poly-3,4-ethylenedioxythiophene conductive compound and its preparation and application. Background technique [0002] As a conductive polymer, PEDOT is a new type of organic material that has the potential to be developed into an ideal flexible transparent electrode, but its insoluble and infusible properties limit its application. In the 1980s, Bayer AG of Germany used polystyrene sulfonic acid (PSS)-dispersed polythiophene derivative poly3,4-ethylenedioxythiophene, referred to as PEDOT:PSS. PEDOT:PSS has attracted widespread attention due to its good film-forming properties, good environmental stability and film transparency, and has also shown broad application prospects in antistatic coatings and organic electronic devices. Polystyrene sulfonic acid (PSS) has a linear regular structure, which is beneficia...

Claims

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Application Information

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IPC IPC(8): C08L79/02C08L65/00C08G61/12C08G73/02H01L51/42H01L51/46
CPCY02E10/549
Inventor 李远郭斌
Owner SOUTH CHINA UNIV OF TECH