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Influence of the magnitude and direction of electric field on the transport and growth property of deposited polyaniline films

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Abstract

Polyaniline (PANI) films were deposited by electrochemical polymerization of aniline monomer on a fluorine-doped glass substrate at room temperature under different electric field directions. The as-synthesized PANI films obtained at different growth cycles were characterized by AC impedance spectroscopy and scanning electron microscopy (SEM). The results revealed that the film morphology, transport kinetics, and electrical properties are strongly dependent on the electric field direction and magnitude of the applied field during electropolymerization. The SEM morphology and AC impedance (modulus spectroscopy) indicate that a more homogeneous, high-porous, and conducting PANI film is induced by horizontal electric field direction (HEFD) electrodeposition, whereas the modulus spectroscopy of the PANI film deposited by vertical electric field direction (VEFD) reveals that VEFD deposition favours two-dimensional growth of PANI. The obtained polymer is more of dielectric in nature due to preferable dendritic growth which is supported by SEM analysis.

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Acknowledgments

The authors acknowledge Dr. Puyam Singh, Central Salt and Marine Chemical Institute (CSMCSIR), Bhavnagar for carrying out the scanning electron microscopy of our samples. We are thankful to the Department of Science and Technology (DST), Government of India for the financial support under the INSPIRE fellowship scheme for PhD studies of Kavita Pandey.

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  1. School of Solar Energy, Pandit Deendayal Petroleum University, Gandhinagar, 382007, Gujarat, India

    Kavita Pandey, Pankaj Yadav & Indrajit Mukhopadhyay

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  1. Kavita Pandey
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  2. Pankaj Yadav
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  3. Indrajit Mukhopadhyay
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Correspondence to Indrajit Mukhopadhyay.

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Pandey, K., Yadav, P. & Mukhopadhyay, I. Influence of the magnitude and direction of electric field on the transport and growth property of deposited polyaniline films. J Solid State Electrochem 18, 453–463 (2014). https://doi.org/10.1007/s10008-013-2270-5

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  • DOI: https://doi.org/10.1007/s10008-013-2270-5

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