title: Individually addressable crystalline conducting polymer nanowires in a microelectrode sensor array.
abstract: An efficient, site-specific and scalable approach has been developed to produce high-quality and individually addressable conducting polymer nanowire electrode junctions (CPNEJs) in a parallel-oriented array. Polypyrrole and PEDOT conducting polymer nanowires (CPNWs) with uniform diameters (ca. 60-150 nm) were introduced into the desired electrode junctions in a precise manner by performing a three-step constant-current electrochemical process at a low current density and a low concentration of monomers. A low scan rate, cyclic voltammetric method was also employed and gave similar results. These CPNEJ arrays function as a miniaturized sensor for the parallel and real-time detection of gas and organic vapour. The electrochemical approaches utilized allow the conducting polymer chains to self-organize in the CPNWs to form novel polycrystalline structures, observed by high resolution TEM. The weak diffraction rings at 4.88 Å and 4.60 Å were observed for PEDOT and polypyrrole CPNWs, respectively.
authors: Department of Molecular and Medical Pharmacology, Crump Institute for Molecular Imaging, 700 Westwood Plaza, Los Angeles, CA 90095, USA.
authors: Yanju
authors: Y
authors: Wang
authors: Karla K
authors: KK
authors: Coti
authors: Jun
authors: J
authors: Wang
authors: Maksudul M
authors: MM
authors: Alam
authors: Jing-Jong
authors: JJ
authors: Shyue
authors: Weixing
authors: W
authors: Lu
authors: Nitin P
authors: NP
authors: Padture
authors: Hsian-Rong
authors: HR
authors: Tseng