Electrochemical <i>in situ</i> synthesis of polypyrrole nanowires

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dc.contributor.authorRamirez, A. M. R.
dc.contributor.authorGacitua, M. A.
dc.contributor.authorOrtega, E.
dc.contributor.authorDiaz, F. R.
dc.contributor.authordel Valle, M. A.
dc.date.accessioned2025-01-23T21:15:47Z
dc.date.available2025-01-23T21:15:47Z
dc.date.issued2019
dc.description.abstractModification with polypyrrole nanowires, PPy-nw, is accomplished directly upon the working electrode by electrochemical polymerization methods using mesoporous silica as a template. The silica template is prepared by a potentiostatic method, generating a homogeneous film over a previously deposited thin layer of PPy, so that PPy-nw grows within the nanochannels of the mesoporous silica and adheres firmly to the surface. Subsequently the template is removed to obtain intact Pt vertical bar PPy-nw with stable and reproducible electrochemical properties, and with an enhanced (about 360 times higher charge capacity) response after charge-discharge experiments compared to equivalent electrodes modified with polymer deposits in the bulk (PPy) form. SEM reveals the brush-type conformation of PPy-nw (30 nm in diameter). Thus, a cheap, simple, highly repeatable method is used in situ to prepare electrodes modified with nano-structured polymers, using electrochemical techniques alone. This could have a great impact on a wide range of applications of conducting polymers.
dc.description.funderCONICYT-Chile through grants FONDECYT
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.elecom.2019.04.007
dc.identifier.eissn1873-1902
dc.identifier.issn1388-2481
dc.identifier.urihttps://doi.org/10.1016/j.elecom.2019.04.007
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101101
dc.identifier.wosidWOS:000465448100018
dc.language.isoen
dc.pagina.final98
dc.pagina.inicio94
dc.revistaElectrochemistry communications
dc.rightsacceso restringido
dc.subjectConducting polymer
dc.subjectElectrochemical-polymerization
dc.subjectModified electrode
dc.subjectDoping/undoping process
dc.subjectNanostructure
dc.titleElectrochemical <i>in situ</i> synthesis of polypyrrole nanowires
dc.typeartículo
dc.volumen102
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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