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PEDOT (poly(3,4-ethylenedioxythiophene)):PSS (poly(sodium-p-styrenesulfonate)) water dispersion and preparation method thereof

A technology of dispersion and powder, which is applied in the field of organic semiconductors, can solve the problems of limited application development, electrical conductivity and film-forming properties, and low film conductivity, and achieves a simple and reliable preparation method, suitable for popularization and application, and repeatable good sex effect

Active Publication Date: 2014-07-23
CHANGZHOU XIAOGUO INFORMATION SERVICES
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  • Abstract
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  • Claims
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Problems solved by technology

However, the PEDOT:PSS aqueous dispersion obtained by the above method has the characteristics of poor film-forming property and low film conductivity, which limit its application and development in the field of organic optoelectronics.
[0003] The commonly used technical scheme of treating PEDOT:PSS film with low-boiling point alcohols (such as methanol) will significantly increase the conductivity of the film, but small molecules are easy to volatilize from the film, and the conductivity will decrease accordingly; if adding Some high-boiling solvents such as 1,4-dioxane, sorbitol, glycerol, diethylene glycol, etc. can increase the conductivity of PEDOT:PSS by one to two orders of magnitude, but the difference between the solvent and PEDOT:PSS There is no chemical bond between them, and after a certain period of time, the solvent may migrate, extract and seep out; the PEDOT:PSS film is treated with ethylene glycol (EG), and the conductivity is also improved, but the film becomes insoluble in water, and the film becomes insoluble. Residual organic solvents can also lead to poor morphology of the film
Patent CN102731923B has studied the improvement of the conductivity of PEDOT:PSS solution by doping pentosan sulfate sodium and ethylene glycol, but the results show that the conductivity and film-forming properties need to be improved, so the development of PEDOT:PSS water dispersion with better performance body is the current research problem

Method used

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  • PEDOT (poly(3,4-ethylenedioxythiophene)):PSS (poly(sodium-p-styrenesulfonate)) water dispersion and preparation method thereof
  • PEDOT (poly(3,4-ethylenedioxythiophene)):PSS (poly(sodium-p-styrenesulfonate)) water dispersion and preparation method thereof
  • PEDOT (poly(3,4-ethylenedioxythiophene)):PSS (poly(sodium-p-styrenesulfonate)) water dispersion and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] Embodiment one (comparative example)

[0036] Preparation of PEDOT:PSS Aqueous Dispersion Using PSS as Template

[0037] The PEDOT:PSS aqueous dispersion of the template that the preparation solid content is 2% with PSS, wherein, the mass ratio of PSS and EDOT is 6:1; The mass ratio of IPA and EDOT is 1:1; (NH 4 ) 2 S 2 o 8 The molar ratio with EDOT is 2:1; Fe 2 (SO 4 ) 3 The molar ratio to EDOT is 0.003:1.

[0038] Concrete preparation method and steps are as follows:

[0039] First, at room temperature, weigh 0.1g EDOT and 0.6gPSS in a 250ml reaction bottle, measure 20g of deionized water and stir to dissolve until clear, then weigh 0.1g of isopropanol, 0.00028mol (NH 4 ) 2 S 2 o 8 and 4.225×10 -6 molFe 2 (SO 4 ) 3 , Measure 15g of deionized water into the reaction flask, and react under stirring at 30-45°C to obtain an aqueous dispersion. During the reaction, samples were taken regularly to measure the conversion rate.

[0040] The prepared aqueous d...

Embodiment 2

[0042] The PEDOT:PSS aqueous dispersion was prepared by using the copolymer of 9,9-dioctylfluorene and 9,9-di-(3-propylamide-2-methylpropanesulfonate)fluorene as a template.

[0043] Aqueous dispersion of PEDOT:PSS with a solid content of 1% and a sulfonic acid conjugated polymer as a template was prepared. PSS and PFSO 3 The mass ratio of H is 0.5:1; PSS-PFSO 3 The mass ratio of H and EDOT is 0.5:1; the mass ratio of IPA and EDOT is 1:1; (NH 4 ) 2 S 2 o 8 The molar ratio with EDOT is 1.5:1; Fe(OTS) 3 The molar ratio with EDOT is 0.004:1; H 2 o 2 The molar ratio with EDOT is 2:1.

[0044] Concrete preparation method and steps are as follows:

[0045] First, weigh 0.1111g of 9,9-dioctylfluorene and 9,9-bis-(3-propylamide-2-methylpropanesulfonate sodium)fluorene in a 250ml reaction bottle at room temperature. Copolymer, 0.0555gPSS and 0.3333gEDOT, measure 25g deionized water and stir to dissolve until clear, then weigh 0.3333g of isopropanol, 0.0035mol (NH 4 ) 2 S 2...

Embodiment 3

[0048] The PEDOT:PSS aqueous dispersion was prepared by using the copolymer of 9,9-dioctylfluorene and 9,9-di-(3-propylamide-2-methylpropanesulfonate)fluorene as a template.

[0049] Aqueous dispersion of PEDOT:PSS with a solid content of 1% and a sulfonic acid conjugated polymer as a template was prepared. The mass ratio of PSS and PFSO3H is 10:1; the mass ratio of PSS-PFSO3H and EDOT is 1:1; the mass ratio of IPA and EDOT is 1:1; the molar ratio of (NH4)2S2O8 and EDOT is 0.5:1; Fe2 The molar ratio of (SO4)3 and EDOT is 0.002:1.

[0050] Concrete preparation method and steps are as follows:

[0051] First, weigh 0.0303 g of 9,9-dioctylfluorene and 9,9-bis-(3-propylamide-2-methylpropanesulfonate sodium)fluorene in a 250ml reaction flask at room temperature. Copolymer, 0.3030gPSS and 0.3333gEDOT, take 25g of deionized water and stir to dissolve until clear, then weigh 0.3333g of isopropanol, 0.0012mol(NH4)2S2O8 and 4.695×10-6molFe2(SO4)3, take 41.66 Add 2 g of deionized wate...

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Abstract

The invention relates to the technical field of organic semiconductors and in particular relates to a PEDOT (poly(3,4-ethylenedioxythiophene)):PSS (poly(sodium-p-styrenesulfonate)) water dispersion prepared by using sulfonic acid type conjugated polyelectrolyte as the template and a preparation method thereof. The preparation method comprises the following steps: adding a sulfonic acid type anionic conjugated polymer, EDOT, PSS and deionized water to a reaction flask under the condition of room temperature and dissolving the materials by stirring the materials; then adding isopropanol, an initiator, a ferric iron catalyst and deionized water to react for 12-24 hours under the conditions of heating at 30-45 DEG C and stirring, thus obtaining a water dispersion; removing the supernatant after centrifuging the water dispersion, after repeating the operations three times, diluting the deionized water for precipitation and then carrying out ultrasonic dispersion for one hour, thus obtaining the PEDOT:PSS deep blue water dispersion with PFSO3H as the template. The PEDOT:PSS water dispersion prepared by the preparation method is simple and reliable in preparation method and has good repeatability. Films of the water dispersion have better transparency and higher electrical conductivity.

Description

technical field [0001] The invention relates to the technical field of organic semiconductors, in particular to a PEDOT:PSS aqueous dispersion prepared by using a sulfonic acid type conjugated polyelectrolyte as a template and a preparation method thereof. Background technique [0002] Poly(3,4-ethylenedioxythiophene) (PEDOT) has become a hot spot in the field of conductive polymer research in recent years because of its simple molecular structure, small energy gap, good electrical conductivity, environmental stability, and environmental friendliness. , It has a wide range of applications in solid electrolytic capacitors, plastic antistatic coatings, photographic film coatings and other fields. However, the insolubility and infusibility of pure PEDOT limit its commercial application. The traditional treatment method is to use water-soluble polymers as templates, such as polystyrene sodium sulfonate (PSS), through 3,4-ethylenedioxythiophene (EDOT ) The monomer reacts directl...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08L25/18C08G61/12
Inventor 钱宇芯顾佳欢高山李坚汪称意任强唐宝坤朱凯
Owner CHANGZHOU XIAOGUO INFORMATION SERVICES
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