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649805 Sigma-Aldrich

Poly(3,4-ethylenedioxythiophene)-block-poly(ethylene glycol) solution

1 wt % dispersion in nitromethane, contains perchlorate as dopant

Synonym: Aedotron C-NM, PEDOT-block-PEG



Related Categories π-Conjugated Polymers, Bioelectronics, Biosensing and Bioimaging, Conductive Polymers, Hole Injection Layer (HIL) Materials,
Quality Level   100
contains   perchlorate as dopant
concentration   1 wt % dispersion in nitromethane
resistance   10,000-100,000 Ω/sq (spin cast thin films: typically 1-3 layers spun at 1,000 rpm)
work function   4.33 eV
description   40 nm (RMS roughness spin cast thin films)
particle size   600-1000 nm (in suspension)
conductivity   0.1-5.0 S/cm (bulk)
density   1.127 g/mL at 25 °C


General description

Aedotron polymers are solvent-dispersable forms of PEDOT. These are copolymers of doped PEDOT and a flexible, soluble polymer such as poly(ethylene glycol) (PEG). These colloidal dispersions are stabilized by the highly solvated PEG chains which sterically limit the aggregation of the PEDOT blocks. Aedotron polymers are neither acidic nor corrosive, it easily disperses in polar aprotic solvents. Perchlorate-doped copolymers typically have a higher conductivity with thin films that are more transparent.

Please follow this link for Aedotron/Oligotron selection guide table.


Nitromethane dispersions can be used to cast thin films on glass, ITO, silicon wafers and many polymeric substrates. Compatibility of the polymeric substrate with nitromethane should be tested in each case. Coat the substrate with a "pool" of the nitromethane dispersion. Thin transparent films are typically spun at 1000 RPM or higher speeds, but more conducting films can be obtained at lower speeds. A single layer spun at 1000 RPM is typically 75 nm thick.

Conducting polymer. Useful as anti-static layers, hole-transport layers in OLED′s and various organic electronics applications (flexible circuits, capacitors, batteries).


25 g in glass bottle


Store this product at room temperature (do not refrigerate or freeze). Some settling will normally occur. Agitate, sonicate, and filter prior to use. A plug of glass wool in a pipette can be used for easy filtration. The shelf life of this product will vary depending on how it is stored and handled. Product should be discarded if heavy aggregation occurs, or if sonication / filtering are inadequate to produce a good casting solution.

Legal Information

Aedotron is a trademark of TDA Research, Inc.

Safety & Documentation

Safety Information

Signal word 
Hazard statements 
UN1261 - class 3 - PG 2 - Nitromethane, solution
WGK Germany 
Flash Point(F) 
96.8 °F - closed cup - Not applicable
Flash Point(C) 
36 °C - closed cup - Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


Applications of Conducting Polymer Devices in Life Sciences

Leslie H. Jimison1, Dion Khodagholy1, Thomas Doublet1,2, Christophe Bernard2, George G. Malliaras1, and Róisín M. Owens1 1Department of Bioelectronics, Ecole Nationale Supérieure des Mines CMP-EMSE, ...
Keywords: Bacterial conjugations, Cancer, Cell culture, Diagnostic, Diffusion, Electronics, Gastrointestinal, Immunofluorescence, Organic electronics, Semiconductor, Spectroscopy

New conducting and semiconducting polymers for plastic electronics

In the emerging field of organic printable electronics, such as OLEDs and organic photovoltaics (OPVs), there is a significant need for improved organic conducting and semiconducting materials. This ...
Dr. Silvia Luebben, Dr. Shawn Sapp
Material Matters 2007, 2.3, 11.
Keywords: Bacterial conjugations, Electronics, Environmental, Inductively coupled plasma, Microscopy, Oxidations, Photovoltaics, Purification, Recombination, Renewable energy, Semiconductor, Separation, Solar cells, Solvents, Spectroscopy, Ultraviolet-Visible spectroscopy

Polyethylene Glycol (PEG) Selection Guide

Poly(ethylene glycol) (PEG) is a synthetic, hydrophilic, biocompatible polymer with widespread use in biomedical and other applications. PEGs are synthesized using a ring-opening polymerization of et...
Keywords: Adhesion, Bacterial conjugations, Click chemistry, Molecular biology, PEGylations, Polymerization reactions, Ring-opening polymerization

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