journal article·2013-09

Enhanced electrical conductivity of polyaniline films by postsynthetic DC high-voltage electrical field treatment

Lenka Kulhánková, Jonáš Tokarský, Lubomír Ivánek, Veleslav Mach, Pavlína Peikertová, Vlastimil Matějka, Kateřina Mamulová Kutláková, Jindřich Matoušek, Pavla Čapková

Synthetic Metals· Volume 179
Publisher page

Abstract

Abstract New approach of chemical bath deposition combined with drying of freshly polymerized PANI films in DC high-voltage static electrical field 0.6–2.7 kV/cm has been applied in present work. AFM and SEM microscopy revealed the significant changes of structure and morphology of PANI films, however the most important result of high-voltage treatment was the strong increase of conductivity of PANI films from 88 S/m for the reference sample untreated in high-voltage field up to 374 S/m for samples dried in the electric field (1.0 kV/cm). The dependence of PANI conductivity on the intensity of high-voltage field showed the maximum conductivity for 1.0 kV/cm. Effects of corona discharge observed for high-voltage field intensity above 2.0 kV/cm on the samples are also presented. Results showed the possibility to change the nanostructure, morphology and conductivity using high-voltage electrical field.
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Research context

OpenAlex topics: Conducting polymers and applications · Advanced Sensor and Energy Harvesting Materials · Electrochemical sensors and biosensors

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