Smaller Counter Cation for Higher Transconductance in Anionic Conjugated Polyelectrolytes

Handle URI:
http://hdl.handle.net/10754/626400
Title:
Smaller Counter Cation for Higher Transconductance in Anionic Conjugated Polyelectrolytes
Authors:
Schmidt, Martina M.; ElMahmoudy, Mohammed; Malliaras, George G.; Inal, Sahika ( 0000-0002-1166-1512 ) ; Thelakkat, Mukundan
Abstract:
Conjugated polyelectrolytes (CPEs) are a focus of research because combine their inherent electrical conductivity and the ability to interact with ions in aqueous solutions or biological systems. However, it is still not understood to what degree the counter ion in CPEs influences the properties of the CPE itself and the performance of electronic transducers. In order to investigate this, three different conjugated polyelectrolytes, poly(6-(thiophen-3-yl)hexane-1-sulfonate)s (PTHS−X+), are synthesized, which have the same polythiophene backbone but different X+ counter ions: the bulky tetrabutylammonium (TBA+), tetraethylammonium (TEA+), and the smallest tetramethylammonium (TMA+). At the interface with biological systems, thin CPE films have to be stable in an aqueous environment and should allow the inward and outward flow of ions from the electrolyte. Since the studied PTHS−X+ have different solubilities in water, the optical properties of pristine PTHS−X+ as well as of crosslinked PTHS−X+ via UV–vis absorption spectroscopy are investigated additionally. PTHS−TMA+ exhibits better aggregation, fast interdiffusion of ions, and fast recovery from the oxidized state. Additionally, spectroelectrochemical and cyclic voltammetric as well as electrochemical capacitance investigations show that PTHS−TMA+ can be oxidized to a higher degree. This leads to a better performance of PTHS−TMA+-based organic electrochemical transistors.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Schmidt MM, ElMahmoudy M, Malliaras GG, Inal S, Thelakkat M (2017) Smaller Counter Cation for Higher Transconductance in Anionic Conjugated Polyelectrolytes. Macromolecular Chemistry and Physics: 1700374. Available: http://dx.doi.org/10.1002/macp.201700374.
Publisher:
Wiley-Blackwell
Journal:
Macromolecular Chemistry and Physics
Issue Date:
11-Dec-2017
DOI:
10.1002/macp.201700374
Type:
Article
ISSN:
1022-1352
Sponsors:
The authors acknowledge Anna Maria Pappa for providing OECTs. Financial support from Deutsche Forschungsgemeinschaft (DFG) (GRK 1640) is kindly acknowledged. M.M.S. acknowledges also the support from Elite Study program, Macromolecular Science at the University of Bayreuth.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/macp.201700374/full
Appears in Collections:
Articles; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorSchmidt, Martina M.en
dc.contributor.authorElMahmoudy, Mohammeden
dc.contributor.authorMalliaras, George G.en
dc.contributor.authorInal, Sahikaen
dc.contributor.authorThelakkat, Mukundanen
dc.date.accessioned2017-12-21T13:39:58Z-
dc.date.available2017-12-21T13:39:58Z-
dc.date.issued2017-12-11en
dc.identifier.citationSchmidt MM, ElMahmoudy M, Malliaras GG, Inal S, Thelakkat M (2017) Smaller Counter Cation for Higher Transconductance in Anionic Conjugated Polyelectrolytes. Macromolecular Chemistry and Physics: 1700374. Available: http://dx.doi.org/10.1002/macp.201700374.en
dc.identifier.issn1022-1352en
dc.identifier.doi10.1002/macp.201700374en
dc.identifier.urihttp://hdl.handle.net/10754/626400-
dc.description.abstractConjugated polyelectrolytes (CPEs) are a focus of research because combine their inherent electrical conductivity and the ability to interact with ions in aqueous solutions or biological systems. However, it is still not understood to what degree the counter ion in CPEs influences the properties of the CPE itself and the performance of electronic transducers. In order to investigate this, three different conjugated polyelectrolytes, poly(6-(thiophen-3-yl)hexane-1-sulfonate)s (PTHS−X+), are synthesized, which have the same polythiophene backbone but different X+ counter ions: the bulky tetrabutylammonium (TBA+), tetraethylammonium (TEA+), and the smallest tetramethylammonium (TMA+). At the interface with biological systems, thin CPE films have to be stable in an aqueous environment and should allow the inward and outward flow of ions from the electrolyte. Since the studied PTHS−X+ have different solubilities in water, the optical properties of pristine PTHS−X+ as well as of crosslinked PTHS−X+ via UV–vis absorption spectroscopy are investigated additionally. PTHS−TMA+ exhibits better aggregation, fast interdiffusion of ions, and fast recovery from the oxidized state. Additionally, spectroelectrochemical and cyclic voltammetric as well as electrochemical capacitance investigations show that PTHS−TMA+ can be oxidized to a higher degree. This leads to a better performance of PTHS−TMA+-based organic electrochemical transistors.en
dc.description.sponsorshipThe authors acknowledge Anna Maria Pappa for providing OECTs. Financial support from Deutsche Forschungsgemeinschaft (DFG) (GRK 1640) is kindly acknowledged. M.M.S. acknowledges also the support from Elite Study program, Macromolecular Science at the University of Bayreuth.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/macp.201700374/fullen
dc.rightsThis is the peer reviewed version of the following article: Smaller Counter Cation for Higher Transconductance in Anionic Conjugated Polyelectrolytes, which has been published in final form at http://doi.org/10.1002/macp.201700374. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.en
dc.titleSmaller Counter Cation for Higher Transconductance in Anionic Conjugated Polyelectrolytesen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalMacromolecular Chemistry and Physicsen
dc.eprint.versionPost-printen
dc.contributor.institutionApplied Functional Polymers; University of Bayreuth; Bayreuth 95440 Germanyen
dc.contributor.institutionDepartment of Bioelectronics; Ecole Nationale Supérieure des Mines; CMP-EMSE; MOC; Gardanne 13541 Franceen
kaust.authorInal, Sahikaen
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