One-Step Wet-Spinning Process of Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Fibers and the Origin of Higher Electrical Conductivity

Jalili, Rouhollah, Razal, Joselito M, Innis, Peter C and Wallace, Gordon 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, vol. 21, no. 17, pp. 3363-3370, doi: 10.1002/adfm.201100785.

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Title One-Step Wet-Spinning Process of Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Fibers and the Origin of Higher Electrical Conductivity
Author(s) Jalili, Rouhollah
Razal, Joselito MORCID iD for Razal, Joselito M orcid.org/0000-0002-9758-3702
Innis, Peter C
Wallace, Gordon G
Journal name Advanced Functional Materials
Volume number 21
Issue number 17
Start page 3363
End page 3370
Total pages 8
Publisher Wiley-VCH Verlag
Place of publication Weinheim, Germany
Publication date 2011
ISSN 1616-301X
Keyword(s) PEDOT:PSS
Conductive fibers
Wet-spinning
Raman spectroscopy
Electron spin resonance spectroscopy
Summary 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.
Language eng
DOI 10.1002/adfm.201100785
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, WILEY-VCH Verlag
Persistent URL http://hdl.handle.net/10536/DRO/DU:30061334

Document type: Journal Article
Collection: Faculty of Science, Engineering and Built Environment
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