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560596

PEDOT:PSS

low-conductivity grade, 2.7 wt. % aqueous dispersion

Synonym(s):

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

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About This Item

UNSPSC Code:
12352103
NACRES:
NA.23
MDL number:
MFCD07371079

Key Documents

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Product Name

Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), 2.7 wt % dispersion in H2O

description

Electrodes

composition

PEDOT content, ~0.14%
PSS content, ~2.6%

concentration

2.7 wt % dispersion in H2O

impurities

<300 ppm Na

particle size

<200 nm, coeff var >95%

pH

1.2-1.8

conductivity

~1E-5 S/cm

viscosity

<20 cP(20 °C)

storage temp.

2-8°C

Quality Level

100

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This Item
483095768650739332
Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) 2.7&#160;wt % dispersion in H2O

Sigma-Aldrich

560596

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

Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) 1.3&#160;wt % dispersion in H2O

Sigma-Aldrich

483095

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

Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) 5.0&#160;wt. %, conductive screen printable ink

Sigma-Aldrich

768650

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

Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) high-conductivity grade, 1.1% in H2O, surfactant-free

Sigma-Aldrich

739332

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

viscosity

<20 cP(20 °C)

viscosity

-

viscosity

≥50,000 mPa.s(20 °C)

viscosity

30-100 cP(20 °C)

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

20-25°C

storage temp.

2-8°C

grade

low-conductivity grade

grade

conductive grade

grade

-

grade

high-conductivity grade

composition

PEDOT content, ~0.14%

composition

PEDOT content, 0.5 wt. % , PSS content, 0.8 wt. %

composition

-

composition

-

concentration

2.7 wt % dispersion in H2O

concentration

1.3 wt % dispersion in H2O

concentration

5.0 wt. %

concentration

1.1% in H2O

impurities

<300 ppm Na

impurities

-

impurities

-

impurities

-

Application

PEDOT:PSS and poly(9-vinylcarbazole) (PVK) can be cross-linked to form a multi-layered organic light emitting diodes.[1] Proton exchange membranes such as Nafion 212 can be coated layer by layer with PEDOT:PSS and poly(allylamine hydrochloride) (PAH).[2]
Useful as an interfacial hole injection layer in OLED and PLED devices to lower operating voltages, increase luminescence efficiency, and enhance display lifetimes.[3][4][5][6]
Virtually 100% absorption from 900-2,000 nm. No absorption maximum from 400-800 nm. Conductive polymer blend.

Features and Benefits

Reduced mean particle size with a tighter distribution of sizes allows for the creation of a smooth surface on the ITO electrode, and so electric "shorts" in LED devices can be reduced. Greatly reduced inherent conductivity reduces the occurrence of "cross-talk" in very small pixel (less than 10 micron) matrix array displays.

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.[7] 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. Conductive polymer blend.[8][9] Impact of small electric and magnetic fields on the polymer was studied.[10]
Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) is an intrinsically conducting polymer (ICP) that is prepared by blending poly(3,4-ethylenedioxythiophene) (PEDOT) and sodium poly(styrenesulfonate) (PSS). It is an aqueous emulsion in which PEDOT is positively charged and the PSS is the counter ion (negatively charged). It can act as an anode or a cathode material based on the application. It can be spin-coated on different substrates at 1000-5000 rpm.[11][12][13]
Preferably applied by spin-coating. Filtration of the dispersion through a 0.45 μm memberane filter is recommended before use. The coatings are dried at a maximum temperature of 200 °C for 1 minute, but a temperature between 50 °C and 150 °C is usually sufficient. The optimal thickness of the dried layer is in the range of 50-250 nm.

Packaging

Packaged in poly bottles

pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV2505
MKCQ6255
MKCM4815
MKCK7724
MKCD3719

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Conducting polymer electrodes for gel electrophoresis
Bengtsson K, et al.
PLoS ONE, 9(2), e89416-e89416 (2014)
PEDOT: PSS self-assembled films to methanol crossover reduction in Nafion membranes
Almeida TP, et al.
Applied Surface Science, 323(3) (2014)
Advanced Materials, 10, 774-774 null
Surface initiated oxidative crosslinking of a polymeric hole transport material for improved efficiency and lifetime in soluble organic light-emitting diodes
Jeon SK, et al.
Organic Electronics, 38(3) (2016)
Solar cells made from polymers containing Dithieno (3, 2-b: 2?, 3?-d) pyrrole with different side chain lengths
Gong C, et al.
Solar Energy Materials and Solar Cells, 95(3) (2011)
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Questions

1–9 of 9 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  3. Is PEDOT:PSS and water the only ingredients in this product?

    1 answer

    1. Yes, this product consists of PEDOT:PSS and water.

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  4. Can PEDOT:PSS, Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), coatings be etched?

    1 answer

    1. Yes, applied PEDOT:PSS films can be patterned by laser ablation.

      Helpful?

  5. How do I test the coductivity of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), PEDOT:PSS?

    1 answer

    1. Conductivity measurements should be performed on poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), PEDOT/PSS, films deposited on flat substrates.  This dispersion should be deposited as a thin and homogeneous layer on a flat substrate using deposition techniques, such as spin-coating or doctor blading.  The layer thickness can be determined by scratching the film off the substrate in places with a razor blade and scanning the stylus of a mechanical or optical profilometer across the scratched region(s). The sheet resistivity can then be measured with conventional four-point probes.

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  6. For product 560596, poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), what is the relationship between film thickness and spin coating speed?

    1 answer

    1. Please see the attached chart showing the spin coating curve for product 560596, poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate).

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  7. What is the Department of Transportation shipping information for this product?

    1 answer

    1. 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.

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  8. Is this PEDOT:PSS, poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), product p-doped or n-doped?

    1 answer

    1. This PEDOT:PSS product is based on hole-doped or P-type polymers. PEDOT can be n-doped, but the materials are too unstable to be of any commercial value.

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  9. What is the temperature stability of this poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), PEDOT:PSS, product?

    1 answer

    1. Deposited poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), PEDOT:PSS, films can easily withstand temperatures in excess of 200°C for short duration and around 70°C in continuous service.  The aqueous dispersions of PEDOT:PSS, however, can be damaged by heating above 50°C for a prolonged period.

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