27 August 2014 Toward a chemiresistive ammonia (NH3) gas sensor based on viral-templated gold nanoparticles embedded in polypyrrole nanowires
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Abstract
Preliminary studies toward the assembly of a gold-polypyrrole (PPy) peapod-like chemiresistive ammonia (NH3) gas sensors are presented. The proposed synthesis process will use electropolymerization to embed gold nanoparticles in polypyrrole nanowires. Viral-templating of gold nanoparticles and PPy electrodeposition via cyclic voltammetry are the focus of this investigation. A gold-binding M13 bacteriophage was used as a bio-template to assemble continuous chains of gold nanoparticles on interdigitated Pt working electrodes. The dimensions of the resulting nanowire-like structures were examined and the electrical resistance measured. PPy films were electropolymerized using an interdigitated planar, Pt electrode integrated counter and reference electrode. Morphological characterization of the polymer films was completed.
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Yiran Yan, Yiran Yan, Miluo Zhang, Miluo Zhang, Heng Chia Su, Heng Chia Su, Nosang V. Myung, Nosang V. Myung, Elaine D. Haberer, Elaine D. Haberer, } "Toward a chemiresistive ammonia (NH3) gas sensor based on viral-templated gold nanoparticles embedded in polypyrrole nanowires", Proc. SPIE 9171, Nanobiosystems: Processing, Characterization, and Applications VII, 91710W (27 August 2014); doi: 10.1117/12.2062183; https://doi.org/10.1117/12.2062183
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