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Influence of ionic liquids on the electrical conductivity and morphology of PEDOT:PSS films

Dobbelin, Markus, Marcilla, Rebeca, Salsamendi, Maitane, Pozo-Gonzalo, Cristina, Carrasco, Pedro M., Pomposo, Jose A. and Mecerreyes, David 2007, Influence of ionic liquids on the electrical conductivity and morphology of PEDOT:PSS films, Chemistry of materials, vol. 19, no. 9, pp. 2147-2149.

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Title Influence of ionic liquids on the electrical conductivity and morphology of PEDOT:PSS films
Author(s) Dobbelin, Markus
Marcilla, Rebeca
Salsamendi, Maitane
Pozo-Gonzalo, CristinaORCID iD for Pozo-Gonzalo, Cristina orcid.org/0000-0002-7890-6457
Carrasco, Pedro M.
Pomposo, Jose A.
Mecerreyes, David
Journal name Chemistry of materials
Volume number 19
Issue number 9
Start page 2147
End page 2149
Total pages 3
Publisher American Chemical Society
Place of publication Washington, D. C.
Publication date 2007-05-01
ISSN 0897-4756
1520-5002
Keyword(s) electric conductivity
nanostructured materials
polymer films
polystyrenes
self assembly
supramolecular chemistry
thiophene
Summary Small-molecule nonvolatile additives based on ionic liquids (IL) as electrical conductivity enhancer in Poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) was studied. Ionic liquids were investigated in the synthesis of self-assembled, highly organized hybrid nanostructures due to their ability as supramolecular solvents. Different percentage of five ionic liquids, such as 1-butyl-3-methylimidazolium tetrafluoroborate (bmim) F 4 and 1-butyl-3-methylimidazolium bromide (bmim)Br were added to a PEDOT:PSScommercial dispersion. Films of pure PEDOT:PSS showed an average conductivity of 14 S cm-1, which corresponded to the value range given by the supplier. AFM images showed that IL induced the formation of a three-dimensional conducting network with smaller PEDOT domains. The ionic character of the films was significantly increased because of the presence of ionic liquids, which can be used effectively in optoelectronic devices.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30048189

Document type: Journal Article
Collection: Institute for Frontier Materials
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