title: Preparation of conductive gold nanowires in confined environment of gold-filled polymer nanotubes.
abstract: Continuous conductive gold nanofibers are prepared via the "tubes by fiber templates" process. First, poly(l-lactide) (PLLA)-stabilized gold nanoparticles (AuNP) with over 60 wt% gold are synthesized and characterized, including gel permeation chromatography coupled with a diode array detector. Subsequent electrospinning of these AuNP with template PLLA results in composite nanofibers featuring a high gold content of 57 wt%. Highly homogeneous gold nanowires are obtained after chemical vapor deposition of 345 nm of poly(p-xylylene) (PPX) onto the composite fibers followed by pyrolysis of the polymers at 1050 °C. The corresponding heat-induced transition from continuous gold-loaded polymer tubes to smooth gold nanofibers is studied by transmission electron microscopy and helium ion microscopy using both secondary electrons and Rutherford backscattered ions.
authors.affiliation: Chair or Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces, University of Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany.
authors.forename: Fabian
authors.initials: F
authors.lastname: Mitschang
authors.forename: Markus
authors.initials: M
authors.lastname: Langner
authors.forename: Henning
authors.initials: H
authors.lastname: Vieker
authors.forename: André
authors.initials: A
authors.lastname: Beyer
authors.forename: Andreas
authors.initials: A
authors.lastname: Greiner
mesh_terms: D006046:Gold / Q000737:chemistry*; D008853:Microscopy; D043942:Nanotubes / Q000737:chemistry*; D053770:Nanowires / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*
chemical_list: D011108:Polymers; D006046:Gold
keywords: chemical vapor deposition; gold; helium ion microscopy; nanoparticles; nanowires