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dc.contributor.authorMaria, Iuliana P.
dc.contributor.authorPaulsen, Bryan D.
dc.contributor.authorSavva, Achilleas
dc.contributor.authorOhayon, David
dc.contributor.authorWu, Ruiheng
dc.contributor.authorHallani, Rawad
dc.contributor.authorBasu, Aniruddha
dc.contributor.authordu, weiyuan
dc.contributor.authorAnthopoulos, Thomas D.
dc.contributor.authorInal, Sahika
dc.contributor.authorRivnay, Jonathan
dc.contributor.authorMcCulloch, Iain
dc.contributor.authorGiovannitti, Alexander
dc.date.accessioned2021-02-03T06:59:14Z
dc.date.available2021-02-03T06:59:14Z
dc.date.issued2021-01-20
dc.date.submitted2020-10-13
dc.identifier.citationMaria, I. P., Paulsen, B. D., Savva, A., Ohayon, D., Wu, R., Hallani, R., … Giovannitti, A. (2021). The Effect of Alkyl Spacers on the Mixed Ionic-Electronic Conduction Properties of N-Type Polymers. Advanced Functional Materials, 2008718. doi:10.1002/adfm.202008718
dc.identifier.issn1616-301X
dc.identifier.issn1616-3028
dc.identifier.doi10.1002/adfm.202008718
dc.identifier.urihttp://hdl.handle.net/10754/667200
dc.description.abstractConjugated polymers with mixed ionic and electronic transport are essential for developing the complexity and function of electrochemical devices. Current n-type materials have a narrow scope and low performance compared with their p-type counterparts, requiring new molecular design strategies. This work presents two naphthalene diimide-bithiophene (NDI-T2) copolymers functionalized with hybrid alkyl-glycol side chains, where the naphthalene diimide unit is segregated from the ethylene glycol (EG) units within the side chain by an alkyl spacer. Introduction of hydrophobic propyl and hexyl spacers is investigated as a strategy to minimize detrimental swelling close to the conjugated backbone and balance the mixed conduction properties of n-type materials in aqueous electrolytes. It is found that both polymers functionalized with alkyl spacers outperform their analogue bearing EG-only side chains in organic electrochemical transistors (OECTs). The presence of the alkyl spacers also leads to remarkable stability in OECTs, with no decrease in the ON current after 2 h of operation. Through this versatile side chain modification, this work provides a greater understanding of the structure-property relationships required for n-type OECT materials operating in aqueous media.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology Office of Sponsored Research (OSlR) under awards no. OSR-2018-CARF/CCF-3079, OSR-2015- CRG4-2572, OSR-2016-CRG5-3003, and OSR-4106 CPF2019. The authors acknowledge EC FP7 Project SC2 (610115), EC H2020 (643791), and EPSRC Projects EP/G037515/1, EP/M005143/1, and EP/L016702/1. A.G. acknowledges funding from the TomKat Center for Sustainable Energy at Stanford University. B.P. and J.R. gratefully acknowledge support from the National Science Foundation grant no. NSF DMR-1751308, and J.R. acknowledges support from the Alfred P. Sloan Foundation. Special thanks to Joseph Strzalka and Qingteng Zhang for beam line assistance. 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.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/10.1002/adfm.202008718
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleThe Effect of Alkyl Spacers on the Mixed Ionic-Electronic Conduction Properties of N-Type Polymers
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentBioscience Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentChemical Science Program
dc.identifier.journalAdvanced Functional Materials
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Chemistry and Centre for Plastic Electronics Imperial College London London SW7 2AZ UK
dc.contributor.institutionDepartment of Biomedical Engineering Northwestern University Evanston IL 60208 USA
dc.contributor.institutionSimpson Querrey Institute Northwestern University Chicago IL 60611 USA
dc.contributor.institutionDepartment of Chemistry Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK
dc.contributor.institutionDepartment of Materials Science and Engineering Stanford University Stanford CA 94305 USA
dc.identifier.pages2008718
kaust.personSavva, Achilleas
kaust.personOhayon, David
kaust.personHallani, Rawad
kaust.personBasu, Aniruddha
kaust.personDu, Weiyuan
kaust.personAnthopoulos, Thomas D.
kaust.personInal, Sahika
kaust.personMcCulloch, Iain
kaust.grant.numberOSR-2018-CARF/CCF-3079
kaust.grant.numberOSR-2015- CRG4-2572
kaust.grant.numberOSR-2016-CRG5-3003
kaust.grant.numberOSR-4106 CPF2019
dc.date.accepted2020-12-20
refterms.dateFOA2021-02-03T07:00:50Z
kaust.acknowledged.supportUnitOSR


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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Except where otherwise noted, this item's license is described as This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.