• USA Home
  • 510831 - Poly(3-octylthiophene-2,5-diyl)

510831 Sigma-Aldrich



Synonym: P3OT



Related Categories π-Conjugated Polymers, Bioelectronics, Biosensing and Bioimaging, Conductive Polymers, Light-Emitting Polymers (LEPs),
Quality Level   100
mol wt   average Mn 22,000
  average Mw 36,600
color   red
mp   198-211 °C
solubility   chloroform, methylene chloride, toluene, and THF: soluble
fluorescence   λex 419 nm; λem 550 nm in chloroform
OPV Device Performance   ITO/PEDOT:PSS/P3OT:PC61BM (1:2)/LiF/Al
• Short-circuit current density (Jsc): 5.55 mA/cm2
• Open-circuit voltage (Voc): 0.5 V
• Fill Factor (FF): 0.33
• Power Conversion Efficiency (PCE): 0.91 %


General description

Poly(3-alkylthiophene)s exhibit thermo- and solvatochromism. Regiorandom poly(3-octylthiophene) shows relatively weak red PL in dilute solution. The emission is largely quenched in concentrated solutions and solid thin films.1:1 (head-to-head):(head-to-tail) linkages of regioisomers.

Poly(3-octylthiophene-2,5-diyl) (P3OT) is an alkylthiophene based conductive polymer with high electroluminescence. It is soluble in most of the organic solvents and can be prepared by the electrochemical polymerization of 3-octylthiophene (3OT). It has hydrophobic properties and can be used as a transducer for ion selective electrodes.


P3OT forms a nanocomposite with carbon nanotubes (CNTs) for devising a high performance semiconducting material. It can also be used as a π-conjugating polymer for the fabrication of organic electronic based devices which include polymeric diodes, solar cells and photovoltaic modules.

Conducting polymer.
Rechargeable battery electrodes, electrochromic devices, chemical and optical sensors, light-emitting diodes, microelectrical amplifiers, field-effect transistors and non-linear optical materials.

Used in organic field-effect transistors and in polymer-based solar cells.


1 g in glass bottle

Features and Benefits

Good processability, environmental stability and electroactivity.


Packaged in glass bottles

Legal Information

Product of Rieke Metals, Inc.
Rieke is a registered trademark of Rieke Metals, Inc.

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Protocols & Articles


Light-Emitting Polymers

Conjugated polymers with long range p-electron delocalization behave as processable organic “metals” in their doped state and as semiconducting materials in their neutral undoped state.1–3 Many undop...
Prof. Qibing Pei
Material Matters 2007, 2.3, 26.
Keywords: Absorption, Alkylations, Applications, Bacterial conjugations, Catalysis, Condensations, Environmental, Grignard Reaction, Infrared spectroscopy, Materials Science, Phase transitions, Polymerization reactions, Radical polymerization, Semiconductor, Solar cells, Solvents, Spectra, Suzuki coupling, Suzuki reactions, Type

Polymer Semiconductors for Intrinsically Stretchable Organic Transistors

Department of Chemical Engineering, Stanford University, Stanford, CA 94305-5025, USA *E-mail: zbao@stanford.edu
Ging-Ji Nathan Wang, Zhenan Bao*
Material Matters, 2017, 12.3
Keywords: Bacterial conjugations, Crystallization, Degradations, Diffraction, Electronics, Hydrogenations, Microscopy, Nucleic acid annealing, Optical microscopy, Organic electronics, Polymerization reactions, Semiconductor, Separation, Solar cells, X-Ray diffraction

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?