Molecular packing effects on the optical spectra and triplet dynamics in oligofluorene films (Articolo in rivista)

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  • Molecular packing effects on the optical spectra and triplet dynamics in oligofluorene films (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Cabanillas-Gonzalez, J.; Sciascia, C.; Lanzani, G.; Toffanin, S.; Capelli, R.; Ramon, M. C.; Muccini, M.; Gierschner, J.; Hwu, T.-Y.; Wong, K.-T. (2008)
    Molecular packing effects on the optical spectra and triplet dynamics in oligofluorene films
    in The journal of physical chemistry. B
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cabanillas-Gonzalez, J.; Sciascia, C.; Lanzani, G.; Toffanin, S.; Capelli, R.; Ramon, M. C.; Muccini, M.; Gierschner, J.; Hwu, T.-Y.; Wong, K.-T. (literal)
Pagina inizio
  • 11605 (literal)
Pagina fine
  • 11609 (literal)
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  • 112 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Cabanillas-Gonzalez, Juan; Sciascia, Calogero; Lanzani, Guglielmo] Politecn Milan, INFM, ULTRAS, Dipartimento Fis,IFN CNR, I-20133 Milan, Italy; [Toffanin, Stefano; Capelli, Raffaella; Ramon, Miguel C.; Muccini, Michele] CNR, Ist Mat Nanostrutturati ISMN, I-40129 Bologna, Italy; [Gierschner, Johannes] Univ Mons Hainaut, Lab Chem Novel Mat, B-7000 Mons, Belgium; [Gierschner, Johannes] Univ Autonoma Madrid, Madrid Inst Adv Studies IMDEA Nanosci, E-28049 Madrid, Spain; [Hwu, Tsyr-Yuan; Wong, Ken-Tsung] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan (literal)
Titolo
  • Molecular packing effects on the optical spectra and triplet dynamics in oligofluorene films (literal)
Abstract
  • We report on the triplet spectra and dynamics in two types of oligomeric films deposited by two different techniques: thermal evaporation and spin coating. The different molecular arrangement in both films is manifested in a red shift of the absorption, PL, and T-1-T-n absorption spectra of the sublimated film relative to the spin-coated one. Triplet recombination dynamics studied with steady-state photoinduced absorption (PA) spectroscopy follow a dispersive bimolecular recombination model away from the trap filling regime. We obtained values for the triplet bimolecular recombination ratio (beta) of 3.4 x 10(-14) and 1.1 x 10(-15) cm(3) s(-1) for evaporated and spin-coated film, respectively, the difference being attributed to diverse molecular arrangement in both films. (literal)
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