Random poly(fluorenylene-vinylene)s containing 3,7-dibenzothiophene-5,5-dioxide units: synthesis, photophysical, and electroluminescence properties (Articolo in rivista)

Type
Label
  • Random poly(fluorenylene-vinylene)s containing 3,7-dibenzothiophene-5,5-dioxide units: synthesis, photophysical, and electroluminescence properties (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/pola.23291 (literal)
Alternative label
  • ROBERTO GRISORIO,1 CLAUDIA PILIEGO,2,3 PINALYSA COSMA,4 PAOLA FINI,5 PIERO MASTRORILLI,1 GIUSEPPE GIGLI,2,6 GIAN PAOLO SURANNA,1 COSIMO FRANCESCO NOBILE1 (2009)
    Random poly(fluorenylene-vinylene)s containing 3,7-dibenzothiophene-5,5-dioxide units: synthesis, photophysical, and electroluminescence properties
    in Journal of polymer science. Part A, Polymer chemistry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • ROBERTO GRISORIO,1 CLAUDIA PILIEGO,2,3 PINALYSA COSMA,4 PAOLA FINI,5 PIERO MASTRORILLI,1 GIUSEPPE GIGLI,2,6 GIAN PAOLO SURANNA,1 COSIMO FRANCESCO NOBILE1 (literal)
Pagina inizio
  • 2093 (literal)
Pagina fine
  • 2104 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 47 (literal)
Rivista
Note
  • Scopus (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ROBERTO GRISORIO,1 CLAUDIA PILIEGO,2,3 PINALYSA COSMA,4 PAOLA FINI,5 PIERO MASTRORILLI,1 1Dipartimento di Ingegneria delle Acque e di Chimica (DIAC), Politecnico di Bari, via Orabona, 4 I-70125 Bari, Italy 2National Nanotechnology Laboratories (NNL), CNR-INFM, Lecce, Italy 3Istituto Superiore Universitario di Formazione Interdisciplinare (ISUFI)-sezione Nanoscienze, Lecce, Italy 4Dipartimento di Chimica dell'Universita` di Bari, Campus Universitario-Bari, Bari, Italy 5Dipartimento di Chimica, Istituto per i Processi Chimico Fisici del CNR (IPCF), Bari, Italy 6Dipartimento di Ingegneria dell'Innovazione, Universita` del Salento, Lecce, Italy (literal)
Titolo
  • Random poly(fluorenylene-vinylene)s containing 3,7-dibenzothiophene-5,5-dioxide units: synthesis, photophysical, and electroluminescence properties (literal)
Abstract
  • The synthesis of new random poly(arylene-vinylene)s containing the electron withdrawing 3,7-dibenzothiophene-5,5-dioxide unit was achieved by the Suzuki- Heck cascade polymerization reaction. The properties of poly[9,9-bis(2-ethylhexyl)- 2,7-fluorenylene-vinylene-co-3,7-dibenzothiophene-5,5-dioxide-vinylene] (50/50 mol/ mol, P1) and poly[1,4-bis(2-ethylhexyloxy)-2,5-phenylene-vinylene-co-3,7-dibenzothiophene- 5,5-dioxide-vinylene] (50/50 mol/mol, P2) were compared with those of terpolymers obtained by combining the fluorene, dibenzothiophene, and 1,4-bis(2-ethylexyloxy) benzene in 20/40/40 (P3), 50/25/25 (P4), and 80/10/10 (P5) molar ratios. The polymers were characterized by 1H NMR and IR, whereas their thermal properties were investigated by TGA and DSC. Polymers P1-5 are blue-green emitters in solution (kem between 481 and 521 nm) whereas a profound red shift observed in the solid state is emission (kem from 578 to 608 nm) that can be attributed both to the charge transfer stabilization exerted by the polar medium and to intermolecular interactions occurring in the solid state. Cyclic voltammetry permitted the evaluation of the ionization potentials and also revealed a quasi-reversible behavior in the reduction scans for the polymers (P1-4) containing the higher amounts of 3,7-dibenzothiophene- 5,5-dioxide units. Electroluminescent devices with both ITO/PEDOT-PSS/P1-5/Ca/Al (Type I) and ITO/PEDOT-PSS/P1-5/Alq3/Ca/Al (Type II) configuration were fabricated showing a yellow to yellow-green emission. In the case of P4, a luminance of 1835 cd/m2 and an efficiency of 0.25 cd/A at 14 V were obtained for the Type II devices (literal)
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