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dc.contributor.authorSurgailis, Jokubas
dc.contributor.authorSavva, Achilleas
dc.contributor.authorDruet, Victor
dc.contributor.authorPaulsen, Bryan D.
dc.contributor.authorWu, Ruiheng
dc.contributor.authorHamidi-Sakr, Amer
dc.contributor.authorOhayon, David
dc.contributor.authorNikiforidis, Georgios
dc.contributor.authorChen, Xingxing
dc.contributor.authorMcCulloch, Iain
dc.contributor.authorRivnay, Jonathan
dc.contributor.authorInal, Sahika
dc.date.accessioned2021-03-21T11:37:24Z
dc.date.available2021-03-21T11:37:24Z
dc.date.issued2021-03-18
dc.date.submitted2020-11-26
dc.identifier.citationSurgailis, J., Savva, A., Druet, V., Paulsen, B. D., Wu, R., Hamidi-Sakr, A., … Inal, S. (2021). Mixed Conduction in an N-Type Organic Semiconductor in the Absence of Hydrophilic Side-Chains. Advanced Functional Materials, 2010165. doi:10.1002/adfm.202010165
dc.identifier.issn1616-301X
dc.identifier.issn1616-3028
dc.identifier.doi10.1002/adfm.202010165
dc.identifier.urihttp://hdl.handle.net/10754/668162
dc.description.abstractOrganic electrochemical transistors (OECTs) are the building blocks of biosensors, neuromorphic devices, and complementary circuits. One rule in the materials design for OECTs is the inclusion of a hydrophilic component in the chemical structure to enable ion transport in the film. Here, it is shown that the ladder-type, side-chain free polymer poly(benzimidazobenzophenanthroline) (BBL) performs significantly better in OECTs than the donor–acceptor type copolymer bearing hydrophilic ethylene glycol side chains (P-90). A combination of electrochemical techniques reveals that BBL exhibits a more efficient ion-to-electron coupling and higher OECT mobility than P-90. In situ atomic force microscopy scans evidence that BBL, which swells negligibly in electrolytes, undergoes a drastic and permanent change in morphology upon electrochemical doping. In contrast, P-90 substantially swells when immersed in electrolytes and shows moderate morphology changes induced by dopant ions. Ex situ grazing incidence wide-angle X-ray scattering suggests that the particular packing of BBL crystallites is minimally affected after doping, in contrast to P-90. BBL's ability to show exceptional mixed transport is due to the crystallites’ connectivity, which resists water uptake. This side chain-free route for the design of mixed conductors could bring the n-type OECT performance closer to the bar set by their p-type counterparts.
dc.description.sponsorshipThe research reported in this publication was supported by funding from KAUST, Office of Sponsored Research (OSR), under award number OSR-2016-CRG5-3003, URF/1/4073-01 and OSR-2018-CRG7-3709. J. S. thanks Dr. Yi Zhang for the TEM image of P-90. B.D.P., R.W., and J.R. gratefully acknowledge support from the National Science Foundation Grant No. NSF DMR-1751308. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The authors would like to thank Joseph Strzalka and Qingteng Zhang for beam line assistance.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/10.1002/adfm.202010165
dc.rightsArchived with thanks to Advanced Functional Materials
dc.titleMixed Conduction in an N-Type Organic Semiconductor in the Absence of Hydrophilic Side-Chains
dc.typeArticle
dc.contributor.departmentBioengineering Program
dc.contributor.departmentBiological and Environmental Science and Engineering Division Organic Bioelectronics Laboratory King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentBioscience Program
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalAdvanced Functional Materials
dc.rights.embargodate2022-03-18
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Chemistry Northwestern University Evanston IL 60208 USA
dc.contributor.institutionDepartment of Chemistry Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK
dc.contributor.institutionSimpson Querrey Institute Northwestern University Chicago IL 60611 USA
dc.identifier.pages2010165
kaust.personSurgailis, Jokubas
kaust.personSavva, Achilleas
kaust.personDruet, Victor
kaust.personHamidi-Sakr, Amer
kaust.personOhayon, David
kaust.personNikiforidis, Georgios
kaust.personChen, Xingxing
kaust.personMcCulloch, Iain
kaust.personInal, Sahika
kaust.grant.numberOSR-2016-CRG5-3003
kaust.grant.numberURF/1/4073-01
kaust.grant.numberOSR-2018-CRG7-3709
dc.date.accepted2021-02-10
kaust.acknowledged.supportUnitCRG
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)


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