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Multidimensional Conducting Polymer Nanotubes for Ultrasensitive Chemical Nerve Agent Sensing

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World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
Alan G. MacDiarmid Energy Research Institute, Department of Polymer and Fiber System Engineering, Chonnam National University, Gwangju 500-757, South Korea
*E-mail: [email protected] (J.J.); [email protected] (H.Y.).
Cite this: Nano Lett. 2012, 12, 6, 2797–2802
Publication Date (Web):April 30, 2012
https://doi.org/10.1021/nl204587t
Copyright © 2012 American Chemical Society

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    Abstract

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    Tailoring the morphology of materials in the nanometer regime is vital to realizing enhanced device performance. Here, we demonstrate flexible nerve agent sensors, based on hydroxylated poly(3,4-ethylenedioxythiophene) (PEDOT) nanotubes (HPNTs) with surface substructures such as nanonodules (NNs) and nanorods (NRs). The surface substructures can be grown on a nanofiber surface by controlling critical synthetic conditions during vapor deposition polymerization (VDP) on the polymer nanotemplate, leading to the formation of multidimensional conducting polymer nanostructures. Hydroxyl groups are found to interact with the nerve agents. Representatively, the sensing response of dimethyl methylphosphonate (DMMP) as a simulant for sarin is highly sensitive and reversible from the aligned nanotubes. The minimum detection limit is as low as 10 ppt. Additionally, the sensor had excellent mechanical bendability and durability.

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    Additional information about experimental details, sample preparation, characterization, physicochemical properties, sensor performances, and SEM observation. This material is available free of charge via the Internet at http://pubs.acs.org.

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