Electrochemical, magnetic and electrical properties of a,w-capped sexithiophene films. Part 1.Neutral-polaron and polaron-bipolaron conductivities. (Articolo in rivista)

Type
Label
  • Electrochemical, magnetic and electrical properties of a,w-capped sexithiophene films. Part 1.Neutral-polaron and polaron-bipolaron conductivities. (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Zotti G., Zecchin S., Vercelli B., Berlin A., Grimoldi S., Pasini M.C., Raposo M. M. M. (2005)
    Electrochemical, magnetic and electrical properties of a,w-capped sexithiophene films. Part 1.Neutral-polaron and polaron-bipolaron conductivities.
    in Chemistry of materials
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Zotti G., Zecchin S., Vercelli B., Berlin A., Grimoldi S., Pasini M.C., Raposo M. M. M. (literal)
Pagina inizio
  • 6492 (literal)
Pagina fine
  • 6502 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 17 (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
  • Electrochemical, magnetic and electrical properties of a,w-capped sexithiophene films. Part 1.Neutral-polaron and polaron-bipolaron conductivities. (literal)
Abstract
  • Thin solid films of fourteen sexithiophenes variously substituted at the terminal a,w-positions were electrochemically deposited on electrodes by anodic coupling of the corresponding half-capped terthiophenes. Sexithiophene films were investigated by cyclic voltammetry, EQCM, in-situ ESR and in-situ conductivity. Reversible oxidation is composed by two separate one-electron steps, the first of which is split into two 0.5-electron steps for most 3,4-ethylenedioxy-substituted terthiophenes. ESR indicates strong magnetic dimerization for the one electron oxidized species. Conductivity (in the range 10-4-10-1 S cm-1) is redox type and develops at the neutral-cation (neutral-polaron) and cation-dication (polaron-bipolaron) levels with values 5-10 times higher for the latter. The influence of steric, electron donor-acceptor and conjugative effects on conductivity was evaluated by a suitable choice of end-capping substituents. (literal)
Prodotto di
Autore CNR

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it