Electrostatically self-assembled multilayers of novel symmetrical rigid-rod polyanionic and polycationic polythiophenes on ito/glass and gold electrodes (Articolo in rivista)

Type
Label
  • Electrostatically self-assembled multilayers of novel symmetrical rigid-rod polyanionic and polycationic polythiophenes on ito/glass and gold electrodes (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Alternative label
  • Zotti G., Zecchin S. Schiavon G., Vercelli B., Berlin A., Porzio W. (2004)
    Electrostatically self-assembled multilayers of novel symmetrical rigid-rod polyanionic and polycationic polythiophenes on ito/glass and gold electrodes
    in Chemistry of materials
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Zotti G., Zecchin S. Schiavon G., Vercelli B., Berlin A., Porzio W. (literal)
Pagina inizio
  • 2091 (literal)
Pagina fine
  • 2100 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 16 (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 Istituto per lo Studio delle Macromolecole (literal)
Titolo
  • Electrostatically self-assembled multilayers of novel symmetrical rigid-rod polyanionic and polycationic polythiophenes on ito/glass and gold electrodes (literal)
Abstract
  • Anodic coupling of 4,4-bis-butanesulfonate cyclopentadithiophene occurs in acetonitrile after the addition of 1:1 HClO4 to yield water-soluble polyanionic poly(1). 4,4-Bis-hexyltrimethylammonium cyclopentadithiophene is polymerized in acetonitrile to acetonitrile-soluble polycationic poly(2) which is converted to the water-soluble hydroxide form by anion exchange. These novel water-soluble polythiophenes, characterized by a rigid-rod symmetrical shape of the chain, display a high conjugation length (Ïmax ) 560-575 nm) and a good solubility in water (>10 gL-1). MALDI and UV-vis spectroscopy assign these polymers a degree of polymerization of 5-6. The polymers form stable monolayers (storing a redox charge of 10 ÌC cm-2) on ITO/glass and gold electrodes. Subsequent electrostatic self-assembly (ESA) of poly(1) and poly(2), both between them and each with a non-electroactive polycation or polyanion, proceeds with a linear growth rate monitored by cyclic voltammetry (10 ÌC cm-2 bilayer-1) and UV-vis spectroscopy. No effect of ionic strength was observed in contrast with ESA of conventional polyionic polymers. IRRAS and XRD analysis of the multilayers agree with a regular disposition of the polythiophene chains in the layers. (literal)
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