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One-step wet-spinning process of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) fibers and the origin of higher electrical conductivity

Journal Article


Abstract


  • A simplified wet-spinning process for the production of continuous poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) fibers is reported. Conductivity enhancement of PEDOT:PSS fibers up to 223 S cm -1 has been demonstrated when these fibers are exposed to ethylene glycol as a post-synthesis processing step. In a new spinning approach it is shown that by employing a spinning formulation consisting of an aqueous blend of PEDOT:PSS and poly(ethlylene glycol), the need for post-spinning treatment with ethylene glycol is eliminated. With this approach, 30-fold conductivity enhancements from 9 to 264 S cm-1 are achieved with respect to an untreated fiber. This one-step approach also demonstrates a significant enhancement in the redox properties of the fibers. These improvements are attributed to an improved molecular ordering of the PEDOT chains in the direction of the fiber axis and the consequential enrichment of linear (or expanded-coil like) conformation to preference bipolaronic electronic structures as evidenced by Raman spectroscopy, solid-state electron spin resonance (ESR) and in situ electrochemical ESR studies. A facile one-step fiber wet-spinning process to fabricate continuous and highly conducting fibers from poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)-poly(ethylene glycol)(PEDOT:PSS-PEG) blend is described. Improvements in electrical conductivity and electrochemical properties are due to the improved molecular ordering of the PEDOT chains in the direction of the fiber axis and the consequential enrichment of linear (or expanded-coil-like) conformation to preference bipolaronic electronic structures. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Publication Date


  • 2011

Citation


  • Jalili, R., Razal, J. M., Innis, P. C. & Wallace, G. G. (2011). One-step wet-spinning process of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) fibers and the origin of higher electrical conductivity. Advanced Functional Materials, 21 (17), 3363-3370.

Scopus Eid


  • 2-s2.0-80052413792

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/3457

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 3363

End Page


  • 3370

Volume


  • 21

Issue


  • 17

Abstract


  • A simplified wet-spinning process for the production of continuous poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) fibers is reported. Conductivity enhancement of PEDOT:PSS fibers up to 223 S cm -1 has been demonstrated when these fibers are exposed to ethylene glycol as a post-synthesis processing step. In a new spinning approach it is shown that by employing a spinning formulation consisting of an aqueous blend of PEDOT:PSS and poly(ethlylene glycol), the need for post-spinning treatment with ethylene glycol is eliminated. With this approach, 30-fold conductivity enhancements from 9 to 264 S cm-1 are achieved with respect to an untreated fiber. This one-step approach also demonstrates a significant enhancement in the redox properties of the fibers. These improvements are attributed to an improved molecular ordering of the PEDOT chains in the direction of the fiber axis and the consequential enrichment of linear (or expanded-coil like) conformation to preference bipolaronic electronic structures as evidenced by Raman spectroscopy, solid-state electron spin resonance (ESR) and in situ electrochemical ESR studies. A facile one-step fiber wet-spinning process to fabricate continuous and highly conducting fibers from poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)-poly(ethylene glycol)(PEDOT:PSS-PEG) blend is described. Improvements in electrical conductivity and electrochemical properties are due to the improved molecular ordering of the PEDOT chains in the direction of the fiber axis and the consequential enrichment of linear (or expanded-coil-like) conformation to preference bipolaronic electronic structures. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Publication Date


  • 2011

Citation


  • Jalili, R., Razal, J. M., Innis, P. C. & Wallace, G. G. (2011). One-step wet-spinning process of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) fibers and the origin of higher electrical conductivity. Advanced Functional Materials, 21 (17), 3363-3370.

Scopus Eid


  • 2-s2.0-80052413792

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/3457

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 3363

End Page


  • 3370

Volume


  • 21

Issue


  • 17