3,4-ethylenedioxy-substituted bithiophene-alt-thiophene-s,s-dioxide regular copolymers. synthesis and conductive, magnetic and luminescence properties. (Articolo in rivista)

Type
Label
  • 3,4-ethylenedioxy-substituted bithiophene-alt-thiophene-s,s-dioxide regular copolymers. synthesis and conductive, magnetic and luminescence properties. (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Berlin A., Zotti G., Zecchin S., Schiavon G. , Cocchi M. , Virgili D., Sabatini C. (2003)
    3,4-ethylenedioxy-substituted bithiophene-alt-thiophene-s,s-dioxide regular copolymers. synthesis and conductive, magnetic and luminescence properties.
    in Journal of materials chemistry (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Berlin A., Zotti G., Zecchin S., Schiavon G. , Cocchi M. , Virgili D., Sabatini C. (literal)
Pagina inizio
  • 27 (literal)
Pagina fine
  • 33 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 13 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • 3,4-ethylenedioxy-substituted bithiophene-alt-thiophene-s,s-dioxide regular copolymers. synthesis and conductive, magnetic and luminescence properties. (literal)
Abstract
  • Polyconjugated regular bithiophene-alt-thiophene-S,S-dioxide copolymers were produced by anodic coupling of variously 3,4-ethylenedioxy-substituted 2,5-bis(2-thienyl)thiophene-S,S-dioxide. The polymers were characterized by cyclic voltammetry, FTIR reflection-absorption and UV-vis spectroscopy, MALDI-TOF mass spectroscopy,electrochemical quartz crystal microbalance, in situ ESR and in situ conductivity techniques, photo- and electroluminescence measurements. The regular alternation of electron-rich and -poor thiophene rings in the polymer chain operated by the ethylenedioxy and S,S-dioxide moieties produces a finite window of conductivity. Alkylprotection of the b-positions of the thiophene-S,S-dioxide ring gave low-defect and soluble oligomers which were investigated in single-layer organic light-emitting devices (OLEDs). Photoluminescence quantum efficiency of ca. 1% and external electroluminescence quantum efficiencies of 0.01% photon/electron at a luminance of 100 cd m22 were obtained. (literal)
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