PEDOT-TMA
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| Other names
Oligotron; Pedot tetramethacrylate; Poly(3,4-ethylenedioxythiophene), tetramethacrylate end-capped
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| Properties | |
| Molar mass | ~6000 g/mol |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Poly(3,4-ethylenedioxythiophene)-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. Advantages of this polymer relative to PEDOT (or PEDOT:PSS) are that it is dispersible in organic solvents, and it is non-corrosive. PEDOT-TMA was developed under a contract with the National Science Foundation, and it was first announced publicly on April 12, 2004. The trade name for PEDOT-TMA is Oligotron. PEDOT-TMA was featured in an article entitled "Next Stretch for Plastic Electronics" that appeared in Scientific American in 2004. The U.S. Patent office issued a patent protecting PEDOT-TMA on April 22, 2008.
PEDOT-TMA differs from the parent polymer PEDOT in that it is capped on both ends of the polymer. This limits the chain-length of the polymer, making it more soluble in organic solvents than PEDOT. The methacrylate groups on the two end-caps allow further chemistry to occur such as cross-linking to other polymers or materials.
The Bulk Conductivity of PEDOT-TMA is 0.1-.5 S/cm, the sheet resistance 1-10 M Ω/sq, and the methacrylate equivalent Weight 1360-1600 g/mol.
Several devices and materials have been described in both journals and the patent literature that use PEDOT-TMA as a critical component. In this section, a brief overview of these inventions is given.
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