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  • 768618 - Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)

768618 Sigma-Aldrich


dry re-dispersible pellets

Synonym: Orgacon DRY, PEDOT:PSS, Poly(2,3-dihydrothieno-1,4-dioxin)-poly(styrenesulfonate)



General description

A conducting polymer such as poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) anions (PEDOT/PSS) is widely used in various organic optoelectronic devices. PEDOT: PSS is a blend of cationic polythiopene derivative, doped with a polyanion. High electrical conductivity and good oxidation resistance of such polymers make it suitable for electromagnetic shielding and noise suppression. Thus, the polymer film was found to possess high transparency throughout the visible light spectrum and even into near IR and near UV regions, virtually 100% absorption from 900-2,000 nm. No absorption maximum from 400-800 nm. Impact of small electric and magnetic fields on the polymer was studied.

Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) is a conductive polymer (CP) that is formed by electropolymerizing 3,4-ethylenedioxythiophene in a solution of poly(styrenesulfonate) (PSS). PEDOT is doped with positive ions and PSS with negative ions. It is a low cost CP that is produced with physical appearance (for example dispersible pellets). The following are the properties that make PEDOT:PSS a viable polymer in organic electronics:
• good optical properties
• high conductivity
• functionalization of nanomaterials
• high thermal stability
• easy processing


Orgacon DRY is specifically useful for water sensitive formulations containing UV curable monomer (suitable with small amount of water) and pre-polymer based formulations.

Orgacon DRY pellets can be re-dispersed in organic solvents such as ethanol. The resulting dispersion can be used in coating - or ink - formulations targeted for different applications.

Allow retention of PEDOT/PSS key properties in polar organic solvents; such as Ethanol; Surface Resistance: 200~450 Ohm/square; Visual Light Transmission: ~85%

PEDOT:PSS can be used as a conductive material with a high mobility for charge carriers. It can be used for a wide range of energy based applications such as organic printable electronics, textile electronics, electrochemical storage and supercapacitors, and lithium ion batteries.

Virtually 100% absorption from 900-2,000 nm. No absorption maximum from 400-800 nm. Conductive polymer blend.


1, 5 g in glass bottle

Physical properties

• Active chemical PEDOT/PSS
• Visual appearance blue-grey pellets
• Water content max. 15 % under 50% RH; 22°C
• Shelf life 24 month in storage conditions

Preparation Note

When spin-coated using S300 EtOH (contains less than 3.5% wt. H20) as the solvent; the Visual Light Transmission (VLT) according to ASTM D 1003 (excludes substrate) is 85%; and the Surface Resistance is 450 Ohm/square.

Legal Information

Product of Agfa-Gevaert N.V.

Orgacon is a trademark of Agfa-Gevaert N.V.

Safety & Documentation

Safety Information

GHS05  GHS05
Signal word 
Hazard statements 
Precautionary statements 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
What can you tell me regarding the method of preparation of the PEDOT/PSS products, such as Products 768618 and 739316?
The information on the molecular weights of the PEDOT and PSS used to make each batch is held as proprietary.The exact information on the relative amounts(by weight) of the PEDOT and PSS present in these polymersis also held as proprietary. There is a little more PSS than PEDOT; this is logical, since the formula weight for the monomeric equivalent in PSS (C7H6SO3) is a little higher than the formula weight for the monomeric equivalent in PEDOT (C6H4SO2).The solution, product 739316 is made in situ; it is not made from the dry pellets (product 768618).
For product 768618, Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate),what is additional product information including solubility?
Product 768618, Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate (Orgacon DRY)is not a formulationordispersion. Itconsists of dry PEDOT:PSS powder/pellets (lyophilized). Because PSS (poly(styrenesulfonate) is hygroscopic, the pellets will always contain some residual water. These pellets can be redispersed in organic solvents as noted on the attached supplier data sheet. Orgacon DRY is not soluble in chloroformor chlorobenzene.
My question is not addressed here, how can I contact Technical Service for assistance?
Ask a Scientist here.
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