Polypyrrole self-assembled monolayers and electrostatically assembled multilayers on gold and platinum electrodes for molecular junctions (Articolo in rivista)

Type
Label
  • Polypyrrole self-assembled monolayers and electrostatically assembled multilayers on gold and platinum electrodes for molecular junctions (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Vercelli B., Zotti G., Berlin A., Grimoldi S. (2006)
    Polypyrrole self-assembled monolayers and electrostatically assembled multilayers on gold and platinum electrodes for molecular junctions
    in Chemistry of materials
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Vercelli B., Zotti G., Berlin A., Grimoldi S. (literal)
Pagina inizio
  • 3754 (literal)
Pagina fine
  • 3763 (literal)
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  • 18 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto per l'Energetica e le Interfasi Istituto di Scienze e Tecnologie Molecolari (literal)
Titolo
  • Polypyrrole self-assembled monolayers and electrostatically assembled multilayers on gold and platinum electrodes for molecular junctions (literal)
Abstract
  • Self-assembled monolayers (SAMs) and electrostatically assembled multilayers of some soluble polypyrroles (including a thiol-functionalized polypyrrole) were produced on gold and platinum electrodes. Gold and platinum surfaces were used either bare or primed with an anionic monolayer of 3-mercaptopropylsulfonate or Nafion. Poly(sodium-p-styrenesulfonate) and Nafion were used as polyanions for electrostatic self-assembly (ESA). The layers were investigated by cyclic voltammetry, infrared reflection absorption spectroscopy, quartz crystal microbalance, and atomic force microscopy (AFM). ESA proceeds with a growth rate that is linear with the number of bilayers and particularly high (stored charge 30-60 íC cm-2 bilayer-1) with Nafion, which appears to be the primer for all the investigated polypyrroles. Gold-polymer-gold junctions, formed by contact between a polypyrrole SAM on gold and a goldcoated AFM tip, rectify current in polypyrrole sulfosuccinate, whereas they are ohmic with Simmons characteristics in poly(N-hexylcyclopenta[c]pyrrole). In the former case alternation of rectifying and ohmic characteristics is observed with progressive ESA. (literal)
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