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Open Access A novel density-controlled growth of vertical polyaniline nanowire arrays using diblock copolymer as a template

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We develop a novel and simple method for controlling the density and size of polyaniline (PANI) nanowires vertically grown on silicon substrate. The method is based on employing poly(styrene-block-4-vinylpyridine) (PS-b-P4VP) nanoporous array on Mn2O3 seed layer as template. The nanoporous template with Mn2O3 seed at the bottom of each nanopore could be achieved by PS-b-P4VP self-assemble on Mn2O3 seed layer and reconstruction in 1 wt% HF methanol solution. Furthermore, PANI nanoparticles could be generated in each nanopore by oxidizing aniline with Mn2O3 seed at the bottom of nanopores. The PANI nanoparticles further grew to nanowires when ammonium peroxydisulfate (APS) was added to the reaction solution. Interestingly, the distance, arrangement and diameter of PANI nanowires were confined by the nanopores. Therefore, density- and size-controlled PANI nanowire arrays with vertical orientation were obtained. The techniques have significant potential application in nanoelectronic devices.

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Keywords: ARRAY; BLOCK COPOLYMER; DENSITY CONTROL; PANI NANOWIRES; SELF-ASSEMBLE; VERTICAL

Document Type: Short Communication

Publication date: February 1, 2016

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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