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Dielectric Nanowire Composites: One-Pot Synthesis of Gold Nanoparticles Encapsulated in Polyaniline Fibers

  • Eliud K. Mushibe, Steven C. Murphy, Kate Raiti-Palazzolo, Danielle L Mccarthy, Emilly A. Obuya, Jasper Chiguma and Wayne E. Jones...

Abstract

Nanocomposites of gold nanoparticles (AuNPs) embedded in polyaniline fibers have been fabricated using a one-pot synthesis approach and in-situ polymerization. By using a combination of inorganic acids (e.g. HCl) and camphorsulfonic acid, polyaniline nanostructured fibers of high aspect ratio with diameters of 150 ± 50 nm and several micrometers in length were obtained. These fibers afforded high electrical conductivity of 4.2 ± 0.5 S/cm. Encapsulation of the AuNPs in the polyaniline fibers afforded nanocomposites with high electrical conductivity and dielectric constant of 34.0 ± 0.5 S/cm and 65.3 ± 5 respectively. The morphology of these materials was analyzed using SEM and HRTEM and electronic properties were analyzed using UV-Vis spectroscopy.

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*To whom correspondence should be addressed. E-mail: wjones@binghamton.edu , Fax: (607) 777-4478. Phone: (607) 777-2421.

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