Conductive Polymer Synthesis with Single-Crystallinity via a Novel Plasma Polymerization Technique for Gas Sensor ApplicationsReportar como inadecuado


Conductive Polymer Synthesis with Single-Crystallinity via a Novel Plasma Polymerization Technique for Gas Sensor Applications


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1

School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu 702-701, Korea

2

Department of Electronics Engineering, Sejong University, Seoul 143-747, Korea

3

Nano Convergence Devices Research Department, Electronics and Telecommunications Research Institute ETRI, Daejeon 34129, Korea



These authors contributed equally to this work.





*

Author to whom correspondence should be addressed.



Academic Editor: Der-Jang Liaw

Abstract This study proposes a new nanostructured conductive polymer synthesis method that can grow the single-crystalline high-density plasma-polymerized nanoparticle structures by enhancing the sufficient nucleation and fragmentation of the pyrrole monomer using a novel atmospheric pressure plasma jet APPJ technique. Transmission electron microscopy TEM, Fourier transform infrared spectroscopy FT-IR, X-ray photoelectron spectroscopy XPS, and field emission scanning electron microscopy FE-SEM results show that the plasma-polymerized pyrrole pPPy nanoparticles have a fast deposition rate of 0.93 µm·min−1 under a room-temperature process and have single-crystalline characteristics with porous properties. In addition, the single-crystalline high-density pPPy nanoparticle structures were successfully synthesized on the glass, plastic, and interdigitated gas sensor electrode substrates using a novel plasma polymerization technique at room temperature. To check the suitability of the active layer for the fabrication of electrochemical toxic gas sensors, the resistance variations of the pPPy nanoparticles grown on the interdigitated gas sensor electrodes were examined by doping with iodine. As a result, the proposed APPJ device could obtain the high-density and ultra-fast single-crystalline pPPy thin films for various gas sensor applications. This work will contribute to the design of highly sensitive gas sensors adopting the novel plasma-polymerized conductive polymer as new active layer. View Full-Text

Keywords: atmospheric pressure plasma; plasma-polymerized pyrrole; single-crystalline; gas sensor; iodine doping atmospheric pressure plasma; plasma-polymerized pyrrole; single-crystalline; gas sensor; iodine doping





Autor: Choon-Sang Park 1,†, Dong Ha Kim 1,†, Bhum Jae Shin 2, Do Yeob Kim 3, Hyung-Kun Lee 3 and Heung-Sik Tae 1,*

Fuente: http://mdpi.com/



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