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Materials 2017, 10(11), 1272; https://doi.org/10.3390/ma10111272

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

1
School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, Korea
2
ICT Materials and Components Research Laboratory, Electronics and Telecommunications Research Institute (ETRI), Daejeon 34129, Korea
3
Department of Electronics Engineering, Sejong University, Seoul 05006, Korea
*
Author to whom correspondence should be addressed.
Received: 28 September 2017 / Revised: 24 October 2017 / Accepted: 2 November 2017 / Published: 6 November 2017
(This article belongs to the Section Manufacturing Processes and Systems)
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Abstract

Although polymerized aniline (polyaniline, PANI) with and without iodine (I2) doping has already been extensively studied, little work has been done on the synthesis of PANI films using atmospheric pressure plasma (APP) deposition. Therefore, this study characterized pure and I2-doped PANI films synthesized using an advanced APP polymerization system. The I2 doping was conducted ex-situ and using an I2 chamber method following the APP deposition. The pure and I2-doped PANI films were structurally analyzed using field emission scanning electron microscope (FE-SEM), atomic force microscope (AFM), X-ray Diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and time of flight secondary ion mass spectrometry (ToF-SIMS) studies. When increasing the I2 doping time, the plane and cross-sectional SEM images showed a decrease in the width and thickness of the PANI nanofibers, while the AFM results showed an increase in the roughness and grain size of the PANI films. Moreover, the FT-IR, XPS, and ToF-SIMS results showed an increase in the content of oxygen-containing functional groups and C=C double bonds, yet decrease in the C–N and C–H bonds when increasing the I2 doping time due to the reduction of hydrogen in the PANI films via the I2. To check the suitability of the conductive layer for polymer display applications, the resistance variations of the PANI films grown on the interdigitated electrode substrates were also examined according to the I2 doping time. View Full-Text
Keywords: atmospheric pressure plasma; plasma polymerization; iodine doping; nanofiber; polymerized aniline (PANI); X-ray Diffraction (XRD); X-ray photoelectron spectroscopy (XPS); time of flight secondary ion mass spectrometry (ToF-SIMS) atmospheric pressure plasma; plasma polymerization; iodine doping; nanofiber; polymerized aniline (PANI); X-ray Diffraction (XRD); X-ray photoelectron spectroscopy (XPS); time of flight secondary ion mass spectrometry (ToF-SIMS)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Park, C.-S.; Jung, E.Y.; Kim, D.H.; Kim, D.Y.; Lee, H.-K.; Shin, B.J.; Lee, D.H.; Tae, H.-S. Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine. Materials 2017, 10, 1272.

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