Unraveling the Order and Disorder in Poly(3,4-ethylenedioxythiophene)/Poly(styrenesulfonate) Nanofilms

Handle URI:
http://hdl.handle.net/10754/565779
Title:
Unraveling the Order and Disorder in Poly(3,4-ethylenedioxythiophene)/Poly(styrenesulfonate) Nanofilms
Authors:
Zhou, Jian ( 0000-0003-0144-5901 ) ; Anjum, Dalaver H.; Lubineau, Gilles ( 0000-0002-7370-6093 ) ; Li, Erqiang ( 0000-0002-5003-0756 ) ; Thoroddsen, Sigurdur T. ( 0000-0001-6997-4311 )
Abstract:
Conductive polymer poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) exhibits a tunable conductivity ranging from 0.1 to 4380 S·cm–1 under different doping and/or dedoping strategies. However, the dependence of macroscopic electrical properties on the evolution of the microstructure is not clearly understood. This is the first study that systematically investigated the spatial arrangement of the ordered and disordered phases in PEDOT/PSS nanofilms by bright-field (BF), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) combined with electron energy loss spectroscopy (EELS) and element-thickness mapping. Our observations clarify how amorphous PSS hinders electrical transport at various length scales in the PEDOT/PSS films. Moreover, the mechanism for an enhancement in 3 orders of magnitude in electrical conductivity was proved by TEM investigation, which is mainly due to a more uniform dispersion by dedoping that opens PEDOT nanoparticle clusters in PEDOT/PSS films. Our microstructural and electrical studies show that the change in spatial arrangement and interaction of small PEDOT domains plays a considerable role in the final electron transport.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Imaging and Characterization Core Lab; High-Speed Fluids Imaging Laboratory
Citation:
Unraveling the Order and Disorder in Poly(3,4-ethylenedioxythiophene)/Poly(styrenesulfonate) Nanofilms 2015:150803075020006 Macromolecules
Publisher:
American Chemical Society (ACS)
Journal:
Macromolecules
Issue Date:
3-Aug-2015
DOI:
10.1021/acs.macromol.5b00851
Type:
Article
ISSN:
0024-9297; 1520-5835
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acs.macromol.5b00851
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZhou, Jianen
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorLubineau, Gillesen
dc.contributor.authorLi, Erqiangen
dc.contributor.authorThoroddsen, Sigurdur T.en
dc.date.accessioned2015-08-10T12:09:21Zen
dc.date.available2015-08-10T12:09:21Zen
dc.date.issued2015-08-03en
dc.identifier.citationUnraveling the Order and Disorder in Poly(3,4-ethylenedioxythiophene)/Poly(styrenesulfonate) Nanofilms 2015:150803075020006 Macromoleculesen
dc.identifier.issn0024-9297en
dc.identifier.issn1520-5835en
dc.identifier.doi10.1021/acs.macromol.5b00851en
dc.identifier.urihttp://hdl.handle.net/10754/565779en
dc.description.abstractConductive polymer poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) exhibits a tunable conductivity ranging from 0.1 to 4380 S·cm–1 under different doping and/or dedoping strategies. However, the dependence of macroscopic electrical properties on the evolution of the microstructure is not clearly understood. This is the first study that systematically investigated the spatial arrangement of the ordered and disordered phases in PEDOT/PSS nanofilms by bright-field (BF), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) combined with electron energy loss spectroscopy (EELS) and element-thickness mapping. Our observations clarify how amorphous PSS hinders electrical transport at various length scales in the PEDOT/PSS films. Moreover, the mechanism for an enhancement in 3 orders of magnitude in electrical conductivity was proved by TEM investigation, which is mainly due to a more uniform dispersion by dedoping that opens PEDOT nanoparticle clusters in PEDOT/PSS films. Our microstructural and electrical studies show that the change in spatial arrangement and interaction of small PEDOT domains plays a considerable role in the final electron transport.en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acs.macromol.5b00851en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Macromolecules, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acs.macromol.5b00851.en
dc.titleUnraveling the Order and Disorder in Poly(3,4-ethylenedioxythiophene)/Poly(styrenesulfonate) Nanofilmsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentImaging and Characterization Core Laben
dc.contributor.departmentHigh-Speed Fluids Imaging Laboratoryen
dc.identifier.journalMacromoleculesen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorZhou, Jianen
kaust.authorLubineau, Gillesen
kaust.authorThoroddsen, Sigurdur T.en
kaust.authorAnjum, Dalaver H.en
kaust.authorLi, Erqiangen
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