Please use this identifier to cite or link to this item: https://doi.org/10.1021/jp002669y
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dc.titleConversion of polyaniline from insulating to conducting state in aqueous viologen solutions
dc.contributor.authorNg, S.W.
dc.contributor.authorNeoh, K.G.
dc.contributor.authorSampanthar, J.T.
dc.contributor.authorKang, E.T.
dc.contributor.authorTan, K.L.
dc.date.accessioned2014-05-16T07:24:24Z
dc.date.available2014-05-16T07:24:24Z
dc.date.issued2001-06-21
dc.identifier.citationNg, S.W., Neoh, K.G., Sampanthar, J.T., Kang, E.T., Tan, K.L. (2001-06-21). Conversion of polyaniline from insulating to conducting state in aqueous viologen solutions. Journal of Physical Chemistry B 105 (24) : 5618-5625. ScholarBank@NUS Repository. https://doi.org/10.1021/jp002669y
dc.identifier.issn10895647
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/52651
dc.description.abstractThe interactions of polyaniline coatings on low-density polyethylene films with aqueous viologen solutions were investigated. The coatings were characterized by X-ray photoelectron spectroscopy, electron spin spectroscopy, UV-visible absorption spectroscopy and sheet resistance measurements. The results showed that the polyaniline coating can be converted from the insulating base form to the electrically conducting salt form after reaction with the viologen solutions. The reaction rate is dependent on the intrinsic oxidation state of the polyaniline, the type and concentration of the viologen, and the reaction temperature. It is proposed that the conversion of the polyaniline to a conductive state occurs via an oxidative doping mechanism whereby electrons are transferred to the viologen dications. In the proposed mechanism, dissolved oxygen is deemed to play an important role, and this was verified experimentally.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/jp002669y
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMICAL & ENVIRONMENTAL ENGINEERING
dc.contributor.departmentCHEMICAL AND PROCESS ENGINEERING CENTRE
dc.contributor.departmentPHYSICS
dc.description.doi10.1021/jp002669y
dc.description.sourcetitleJournal of Physical Chemistry B
dc.description.volume105
dc.description.issue24
dc.description.page5618-5625
dc.description.codenJPCBF
dc.identifier.isiut000169371500007
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