Magnetic properties of quinoidal oligothiophenes: more than good candidates for ambipolar organic semiconductors (Articolo in rivista)

Type
Label
  • Magnetic properties of quinoidal oligothiophenes: more than good candidates for ambipolar organic semiconductors (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Ortiz R.P., Casado J., Hernández V., López-Navarrete J.T., Ortí E., Viruela P.M., Milián B.; Hotta S., Zotti G., Zecchin S., Vercelli, B. (2006)
    Magnetic properties of quinoidal oligothiophenes: more than good candidates for ambipolar organic semiconductors
    in Advanced functional materials (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ortiz R.P., Casado J., Hernández V., López-Navarrete J.T., Ortí E., Viruela P.M., Milián B.; Hotta S., Zotti G., Zecchin S., Vercelli, B. (literal)
Pagina inizio
  • 531 (literal)
Pagina fine
  • 536 (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 (literal)
Titolo
  • Magnetic properties of quinoidal oligothiophenes: more than good candidates for ambipolar organic semiconductors (literal)
Abstract
  • A series of quinoidal oligothiophenes have been investigated by means of solid-state Fourier-transform (FT)-Raman and electron spin resonance (ESR) spectroscopies complemented with density functional theory calculations. FT-Raman spectra recorded as a function of temperature show that, upon laser irradiation, the molecules undergo a reversible structural evolution from a quinoid-type pattern at low temperature to an aromatic-type pattern at high temperature. Moreover, ESR spectra show that a portion of these compounds exists in a biradical state at room temperature. These seemingly disconnected findings and others, such as conformational isomerism, are consistently explained by the consideration of biradical species associated with the presence of low-lying triplet electronic states. In addition to the well-established versatility of quinoidal oligothiophenes regarding ambipolar electrical actuation in field-effect transistors, the exhibition of dual electrical and magnetic behavior leads to the prospect of new materials that have tunable electrical, optical, and magnetic properties. (literal)
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