title: Multidimensional conducting polymer nanotubes for ultrasensitive chemical nerve agent sensing.
abstract: 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.
authors.affiliation: World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea.
authors.forename: Oh Seok
authors.initials: OS
authors.lastname: Kwon
authors.forename: Seon Joo
authors.initials: SJ
authors.lastname: Park
authors.forename: Jun Seop
authors.initials: JS
authors.lastname: Lee
authors.forename: Eunyu
authors.initials: E
authors.lastname: Park
authors.forename: Taejoon
authors.initials: T
authors.lastname: Kim
authors.forename: Hyun-Woo
authors.initials: HW
authors.lastname: Park
authors.forename: Sun Ah
authors.initials: SA
authors.lastname: You
authors.forename: Hyeonseok
authors.initials: H
authors.lastname: Yoon
authors.forename: Jyongsik
authors.initials: J
authors.lastname: Jang
mesh_terms: D002619:Chemical Warfare Agents / Q000032:analysis / Q000737:chemistry; D003217:Conductometry / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D036103:Nanotechnology / Q000295:instrumentation*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D012524:Sarin / Q000032:analysis* / Q000737:chemistry
chemical_list: D002619:Chemical Warfare Agents; D011108:Polymers; D012524:Sarin