"PEDOT" redirects here. For the CMX album, see
Pedot.
Poly(3,4-ethylenedioxythiophene) (PEDOT or PEDT; IUPAC name poly(2,3-dihydrothieno[3,4-b][1,4]dioxane-5,7-diyl)) is a
conducting polymer based on
3,4-ethylenedioxythiophene or EDOT. It was first reported by
Bayer AG in 1989.[1]
The polymer is generated by
oxidation. The process begins with production of the radical cation of EDOT monomer, [C2H4O2C4H2S]+. This cation adds to a neutral EDOT followed by deprotonation. The idealized conversion using
peroxydisulfate is shown:
n C2H4O2C4H2S + n (OSO3)22− → [C2H4O2C4S]n + 2n HOSO3−
Polymerization is usually conducted in the presence of
polystyrene sulfonate (PSS), which acts as a template. PSS also provides a counter ion, which balances the charges in the reaction and hinders the formation of by-products such as 3,4-ethylenedioxy-2(5H)-thiophenone, and keeps the PEDOT
monomers dispersed in water or
aqueoussolutions. [4] The resulting PEDOT:PSS composite can be deposited on a conductive support such as
platinum,
gold,
glassy carbon, and
indium tin oxide.[5]
Bello, A.; Giannetto, M.; Mori, G.; Seeber, R.; Terzi, F.; Zanardi, C. (2007). "Optimization of the DPV Potential Waveform for Determination of Ascorbic Acid on PEDOT-Modified Electrodes". Sensors and Actuators B: Chemical. 121 (2): 430.
doi:
10.1016/j.snb.2006.04.066.
hdl:11380/621556.
Kumar, S. Senthil; Mathiyarasu, J.; Phani, K. L. N.; Yegnaraman, V. (2005). "Simultaneous Determination of Dopamine and Ascorbic Acid on Poly(3,4-ethylenedioxythiophene) Modified Glassy Carbon Electrode". Journal of Solid State Electrochemistry. 10 (11): 905.
doi:
10.1007/s10008-005-0041-7.
S2CID95645292.
^EP Patent 0339340A2, Friedrich Jonas, Gerhard Heywang, Werner Schmidtberg, Jürgen Heinze, Michael Dietrich, "Polythiophenes, Process for Their Preparation and Their Use", published 1989-11-02, issued 1999-12-29, assigned to BAYER AG
^Groenendaal, L.; Zotti, G.; Aubert, P.-H.; Waybright, S. M.; Reynolds, J. R. (5 June 2003). "Electrochemistry of Poly(3,4-alkylenedioxythiophene) Derivatives". Advanced Materials. 15 (11): 855–879.
doi:
10.1002/adma.200300376.
S2CID95453357.
^Heywang, Gerhard; Jonas, Friedrich (1992). "Poly(alkylenedioxythiophene)s—New, Very Stable Conducting Polymers". Advanced Materials. 4 (2): 116–118.
doi:
10.1002/adma.19920040213.
^
abKirchmeyer, S.; Reuter, K. (2005). "Scientific Importance, Properties and Growing Applications of Poly(3,4-Ethylenedioxythiophene)". J. Mater. Chem.15 (21): 2077–2088.
doi:
10.1039/b417803n.
^Sun, Kuan; Zhang, Shupeng; Li, Pengcheng; Xia, Yijie; Zhang, Xiang; Du, Donghe; Isikgor, Furkan Halis; Ouyang, Jianyong (July 2015). "Review on Application of PEDOTs and PEDOT:PSS in Energy Conversion and Storage Devices". Journal of Materials Science: Materials in Electronics. 26 (7): 4438–4462.
doi:
10.1007/s10854-015-2895-5.
S2CID137534972.