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Poly(3,4-ethylenedioxythiophene)

 

 
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Poly(3,4-ethylenedioxythiophene)
 
 
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Poly(3,4-ethylenedioxythiophene) or PEDOT (or sometimes PEDT) is a conducting polymer based on 3,4-ethylenedioxylthiophene or EDOT monomer
Monomer

A monomer is a small molecule that may become Chemistry chemical bonding to other monomers to form a polymer....
. Advantages of this polymer
Polymer

A polymer is a large molecule composed of repeating structural units typically connected by covalent chemical bonds. While polymer in popular usage suggests plastic, the term actually refers to a large class of natural and synthetic materials with a variety of properties....
 are optical transparency
Transparency (optics)

In optics, transparency is the material property of allowing light to pass through. In mineralogy, another term for this property is diaphaneity....
 in its conducting
Electrical conduction

Electrical conduction is the movement of electric charge particles through a transmission medium . The movement of charge constitutes an Current ....
 state, high stability and moderate band gap
Band gap

In solid state physics and related applied fields, a band gap, also called an energy gap or bandgap, is an energy range in a solid where no electron states exist....
 and low redox potential
Reduction potential

Reduction potential is the tendency of a chemical species to acquire electrons and thereby be redox. Each species has its own intrinsic reduction potential; the more positive the potential, the greater the species' affinity for electrons and tendency to be reduced....
. A large disadvantage is poor solubility
Solubility

Solubility is often seen as a property of a substance; for instance the solubility of a solid substance usually refers to the concentration of the substance in a liquid that has reached equilibrium with the substance in solid phase ....
 which is partly circumvented in the PEDOT:PSS
PEDOT:PSS

PEDOT:PSS or Poly poly is a polymer mixture of two ionomers. One component in this mixture is made up of sodium polystyrene sulfonate which is a aromatic sulfonation polystyrene....
 composite
Composite

Composite may refer to:Acting, Film, and Studio* Composite card, a marketing tool for actors and especially models* Composite character, a character in an adaptation of a work formed from two or more characters from the original work...
, and the PEDOT-TMA
PEDOT-TMA

Poly-tetramethacrylate or PEDOT-TMA is a p-type conducting polymer based on 3,4-ethylenedioxylthiophene or the EDOT monomer. It is a modification of the PEDOT structure....
 material.






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Encyclopedia


Pedot
Poly(3,4-ethylenedioxythiophene) or PEDOT (or sometimes PEDT) is a conducting polymer based on 3,4-ethylenedioxylthiophene or EDOT monomer
Monomer

A monomer is a small molecule that may become Chemistry chemical bonding to other monomers to form a polymer....
. Advantages of this polymer
Polymer

A polymer is a large molecule composed of repeating structural units typically connected by covalent chemical bonds. While polymer in popular usage suggests plastic, the term actually refers to a large class of natural and synthetic materials with a variety of properties....
 are optical transparency
Transparency (optics)

In optics, transparency is the material property of allowing light to pass through. In mineralogy, another term for this property is diaphaneity....
 in its conducting
Electrical conduction

Electrical conduction is the movement of electric charge particles through a transmission medium . The movement of charge constitutes an Current ....
 state, high stability and moderate band gap
Band gap

In solid state physics and related applied fields, a band gap, also called an energy gap or bandgap, is an energy range in a solid where no electron states exist....
 and low redox potential
Reduction potential

Reduction potential is the tendency of a chemical species to acquire electrons and thereby be redox. Each species has its own intrinsic reduction potential; the more positive the potential, the greater the species' affinity for electrons and tendency to be reduced....
. A large disadvantage is poor solubility
Solubility

Solubility is often seen as a property of a substance; for instance the solubility of a solid substance usually refers to the concentration of the substance in a liquid that has reached equilibrium with the substance in solid phase ....
 which is partly circumvented in the PEDOT:PSS
PEDOT:PSS

PEDOT:PSS or Poly poly is a polymer mixture of two ionomers. One component in this mixture is made up of sodium polystyrene sulfonate which is a aromatic sulfonation polystyrene....
 composite
Composite

Composite may refer to:Acting, Film, and Studio* Composite card, a marketing tool for actors and especially models* Composite character, a character in an adaptation of a work formed from two or more characters from the original work...
, and the PEDOT-TMA
PEDOT-TMA

Poly-tetramethacrylate or PEDOT-TMA is a p-type conducting polymer based on 3,4-ethylenedioxylthiophene or the EDOT monomer. It is a modification of the PEDOT structure....
 material. (Note: Pedot is a transparent conductor. These conductors are used for LCDs and solar cells, among others.)

In the field of electroanalysis, conductive polymers are widely employed as coatings conferring the electrode systems antifouling properties and possibly activating electrocatalytic redox processes. Among different conducting polymers, PEDOT has emerged in recent years, thanks to characteristics previously reported. In addition, PEDOT coatings possess high stability over different charge and discharge cycles and can be electrogenerated directly on a conductive support (Pt, Au, glassy carbon, indium tin oxide
Indium tin oxide

Indium tin oxide is a solid solution of indium oxide and tin oxide , typically 90% In2O3, 10% SnO2 by weight....
,…) in organic solvents or in aqueous solution. The enhancement of the electrochemical signals relative to the oxidation of different analytes, when using PEDOT modi?ed electrodes with respect to bare support has been reported in recent publications .

In one study PEDOT nanofiber
Nanofiber

File:N2 2.kesit.JPG Nanofibers are defined as fibers with diameters on the order of 100 nanometers. They can be produced by interfacial polymerization and electrospinning....
s are produced from vanadium pentoxide
Vanadium(V) oxide

Vanadium oxide is the chemical compound with the chemical formula V2O5. Commonly known as vanadium pentoxide, this orange solid is the most important Inorganic compound of vanadium....
 nanofibers by a nanofiber seeding
Nanofiber seeding

Nanofiber Seeding is the process to control the bulk morphology of chemically synthesized electronic organic polymers....
 method. In this procedure EDOT is dissolved in an aqueous solution of camphorsulfonic acid (CSA) and a vanadium pentoxide nanofiber sol-gel and radical cationic polymerization is initiated
Initiation (chemistry)

In chemistry, initiation is a chemical reaction that triggers one or more secondary reactions. Often the initiation reaction generates a reactive intermediate from a stable molecule which is then involved in secondary reactions....
 by addition of ammonium persulfate
Ammonium persulfate

Ammonium persulfate 2S2O8 is a strong oxidizing agent. It is very soluble in cold water, a large fall of temperature accompanying solution....
. The resulting polymer precipitates from solution and has a general composition (PEDOT)(CSA)0.11-(HSO4)0.12(Cl)0.11(H2O)0.19. Washing with dilute hydrochloric acid
Hydrochloric acid

Hydrochloric acid is the solution of hydrogen chloride in water. It is a highly corrosive, strong acid mineral acid and has major industrial uses....
 removes the vanadium compound. The presence of the vanadium pentoxide seeds make the difference between the formation of PEDOT nanofibers (100 to 180 nanometer diameter
Diameter

In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints are on the circle....
 and one to several micrometre
Micrometre

A micrometre or micron is one Micro- of a metre, or equivalently one thousandth of a millimetre. It is also commonly known as a micron....
s long) and the formation of a more conventional granular morphology. When applied to a solid substrate such as PET
Polyethylene terephthalate

Polyethylene tephthalate , commonly abbreviated PET, PETE, or the obsolete PETP or PET-P), is a thermoplastic polymer resin of the polyester family and is used in synthetic fibers; beverage, food and other liquid Packaging; thermoforming applications; and engineering resins often in combination with glass fiber....
, PEDOT non-woven films have slightly less optically transparency and about half the conductance of commercial PEDOT:PSS
PEDOT:PSS

PEDOT:PSS or Poly poly is a polymer mixture of two ionomers. One component in this mixture is made up of sodium polystyrene sulfonate which is a aromatic sulfonation polystyrene....
 / PET
Polyethylene terephthalate

Polyethylene tephthalate , commonly abbreviated PET, PETE, or the obsolete PETP or PET-P), is a thermoplastic polymer resin of the polyester family and is used in synthetic fibers; beverage, food and other liquid Packaging; thermoforming applications; and engineering resins often in combination with glass fiber....
 films.

Research

2008 - Monash University
Monash University

Monash University is a public university based in Melbourne, Australia. It is Australia's largest university with about 55,000 students.The University has a total of eight campuses: six in Victoria, Australia , one in Monash University Malaysia Campus and one in Monash South Africa....
, Melbourne
Melbourne

Melbourne is the more common name for the geographic region and Census in Australia of the Greater Melbourne metropolitan area. It is the second List of cities in Australia by population in Australia, with a population of approximately 3.8 million and serves as the List of Australian capital cities of Victoria ....
 - Cathode
Cathode

A cathode is an electrode through which electric charge flows out of a polarized electrical device. Mnemonic: CCD .From an electrochemical point of view, positively charged ion invariably move toward the cathode and/or negatively charged ion move away from it to balance the electrons arriving from external circuitry....
s in fuel cell
Fuel cell

A fuel cell is an Electrochemistry conversion device. It produces electricity from fuel and an Oxidizing agent , which react in the presence of an electrolyte....
s
, University of Modena and Reggio Emilia, Italy

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