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Structural investigations and processing of electronically and protonically conducting polymers

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Vilkman, Marja
dc.date.accessioned 2012-08-28T11:36:30Z
dc.date.available 2012-08-28T11:36:30Z
dc.date.issued 2010
dc.identifier.isbn 978-951-38-7408-7 (printed) #8195;
dc.identifier.issn 1455-0849
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/4839
dc.description.abstract Various conducting polymers form a special class of materials with the potential for many applications in organic electronics and functional materials. These polymers can be electronically conducting or semiconducting due to a conjugated polymer backbone, or alternatively possess conductivity due to mobile protons or other ions. This thesis discusses such conducting polymers and shows ways how they can be processed by printing and how the nanostructure allows controlling their electrical properties. The printability of conducting polymers, studied in paper I, has opened up new fields for their use in electronics. We showed that conducting polymers like polyaniline can be printed with industrial printers and high speed (up to 100 m/min) on paper achieving 60 µm resolution. One of the most promising fields for conducting polymers is sensor applications. Papers II and III show how polyaniline can be utilised to detect changes in temperature and moisture by selecting suitable counter-ions. Melting of the counter-ion side chains was found to induce a reversible change in conductivity. On the other hand, humidity triggered an irreversible change in conductivity due to crystallisation and phase-separation of the counter-ion. Paper IV studies the effect of polymer microstructure in resistive memory devices. Even though the structure of polymers often has a significant effect on the electrical properties, in this case the polymer-electrode interface was found to be dominating. Finally, paper V shows that highly self-assembled polymer complexes may be achieved by utilising ionic liquids. The polymer-ionic liquid complex forms a surprisingly well organised nanophase-separated structure that provides pathways for proton conduction. This thesis takes a step from the laboratory towards applications of conducting polymers and gives insight into utilisation and processing of functional materials to be used in organic electronics components and devices. en
dc.format.extent Verkkokirja (2306 KB, 62, [27] s.)
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher VTT en
dc.relation.ispartofseries VTT publications, 744 en
dc.relation.haspart [Publication 1]: Mäkelä, T., Jussila, S., Vilkman, M., Kosonen, H., and Korhonen, R. Roll-to-roll method for producing polyaniline patterns on paper, Synthetic Metals 135-136 (2003), 41-42. en
dc.relation.haspart [Publication 2]: Vilkman, M., Kosonen, H., Nykänen, A., Ruokolainen, J., Torkkeli, M., Serimaa, R., and Ikkala, O. Electrical Conductivity Transitions and Self-Assembly in Comb-Shaped Complexes of Polyaniline Based on Crystallization and Melting of the Supramolecular Side Chains, Macromolecules 38 (2005), 7793-7797. en
dc.relation.haspart [Publication 3]: Vilkman, M., Lehtinen, K., Mäkelä, T., Rannou, P., and Ikkala, O. Poly(aniline) doped with 5-formyl-2-furansulfonic acid: A humidity memory, Organic Electronics 11 (2010), 472-478. en
dc.relation.haspart [Publication 4]: Vilkman, M., Solehmainen, K., Laiho, A., Sandberg, H.G.O., and Ikkala, O. Negative differential resistance in polymeric memory devices containing disordered block copolymers with semiconducting block, Organic Electronics 10 (2009), 1478-1482. en
dc.relation.haspart [Publication 5]: Vilkman, M., Lankinen, A., Volk, N., Kostamo, P., and Ikkala, O. Self-Assembly of Cationic Rod-Like Poly(2,5-pyridine) by Acidic Bis(trifluoromethane)sulfonimide in the Hydrated State: A Highly-Ordered Self-Assembled Protonic Conductor, Polymer 51 (2010), 4095-4102. en
dc.subject.other Electrical engineering
dc.subject.other Physics
dc.title Structural investigations and processing of electronically and protonically conducting polymers en
dc.type G5 Artikkeliväitöskirja fi
dc.contributor.school Informaatio- ja luonnontieteiden tiedekunta fi
dc.contributor.department Teknillisen fysiikan laitos fi
dc.contributor.department Department of Applied Physics en
dc.subject.keyword conducting polymers en
dc.subject.keyword polyaniline en
dc.subject.keyword printed electronics en
dc.subject.keyword functional counter-ion en
dc.identifier.urn URN:NBN:fi:aalto-201306287153
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.supervisor Ikkala, Olli, Prof.
local.aalto.digifolder Aalto_66144
local.aalto.digiauth ask

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