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649821 Sigma-Aldrich

Poly(3,4-ethylenedioxythiophene), tetramethacrylate end-capped solution

0.5 wt. % (dispersion in nitromethane), contains p-toluenesulfonate as dopant

Synonym: Oligotron NM, PEDOT, tetramethacrylate end-capped, PEDOT



Related Categories π-Conjugated Polymers, Bioelectronics, Biosensing and Bioimaging, Conductive Polymers, Hole Injection Layer (HIL) Materials,
Quality Level   100
mol wt   ~1,360-1,600 g/mol (methacrylate equivalent weight)
  average Mn ~6,000
contains   p-toluenesulfonate as dopant
composition   ethanol, 5.8 wt. %
  isopropanol, 0.3 wt. %
  nitromethane, 93.4 wt. %
  Oligotron tetramethacrylate, 0.5 wt. %
concentration   0.5 wt. % (dispersion in nitromethane)
resistance   1-10 M Ω/sq (surface resistance of film)
conductivity   0.1-0.5 S/cm (bulk)
density   1.127 g/mL at 25 °C


General description

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


For best results, agitate for 20 minutes prior to use. Spin coat as-is at 500 RPM for 9 seconds followed by 1500 RPM for 15 seconds. Photocurable inks can be formulated by adding acrylate monomers and photoinitiators (i.e.DMPA) to the nitromethane dispersion. The solvent must be evaporated prior to crosslinking. Functional compounds can be coupled to the oligomer via reactions at the methacrylate group.

Poly(3,4-ethylenedioxythiophene), tetramethacrylate end-capped solution (PEDOT-TMA) can be used as a hole injection layer (HIL) which can be used in optoelectronic applications such as light emitting diodes (LEDs), biosensors, and energy storage devices.


25 g in glass bottle

Features and Benefits

End-capped structure renders the conducting oligomer PEDOT dispersible. The methacrylate groups offer the potential for crosslinking, or additional chemical functionalization. Nitromethane has a suitable volatility for spin coating applications.


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

Oligotron 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

Conjugated Polymers for the Engineering of Device/Tissue Interface

There is considerable interest in the development of conjugated, electronically and ionically active polymers for interfacing active biomedical devices with living tissue.1-6 Conjugated polymers offe...
David C. Martin, Laura K. Povlich and Kathleen E. Feldman, Department of Materials Science and Engineering - The University of Delaware
Material Matters 2010, 5.3, 68.
Keywords: Adhesion, Cycloadditions, Deposition, Magnetic resonance spectroscopy, Polymerization reactions, Reductions, Solution polymerization

Flexible and Printed Organic Thermoelectrics: Opportunities and Challenges

1 Department of Chemistry, Purdue University, 560 Oval Dr. West Lafayette, IN, 47907, USA. 2 The Organic Thermoelectric Laboratory, Materials Research Institute and School of Biological & Chemical Sc...
Xuyi Luo,1 Bob C. Schroeder,2* Chong-an Di,3* Jianguo Mei1*
Material Matters, 2017, 12.3
Keywords: Alternative energy, Dehydration reaction, Deposition, Detection methods, Diffraction, Diffusion, Environmental, Gene expression, Infrared spectroscopy, Nanotubes, Nucleic acid annealing, Polymerization reactions, Renewable energy, Semiconductor, Separation, Solvents, X-Ray diffraction

Peer-Reviewed Papers


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