A vinylene-linked benzo[1,2-b:4,5-b']dithiophene-2,1,3-benzothiadiazole low-bandgap polymer (Articolo in rivista)

Type
Label
  • A vinylene-linked benzo[1,2-b:4,5-b']dithiophene-2,1,3-benzothiadiazole low-bandgap polymer (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/pola.26046 (literal)
Alternative label
  • Alessandro Abbotto, Mirko Seri, Milind S. Dangate, Filippo De Angelis, Norberto Manfredi, Edoardo Mosconi, Margherita Bolognesi, Riccardo Ruffo, Matteo M. Salamone, Michele Muccini (2012)
    A vinylene-linked benzo[1,2-b:4,5-b']dithiophene-2,1,3-benzothiadiazole low-bandgap polymer
    in Journal of polymer science. Part A, Polymer chemistry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Alessandro Abbotto, Mirko Seri, Milind S. Dangate, Filippo De Angelis, Norberto Manfredi, Edoardo Mosconi, Margherita Bolognesi, Riccardo Ruffo, Matteo M. Salamone, Michele Muccini (literal)
Pagina inizio
  • 2829 (literal)
Pagina fine
  • 2840 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://onlinelibrary.wiley.com/doi/10.1002/pola.26046/suppinfo (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 50 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 12 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 14 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department of Materials Science, Milano-Bicocca Solar Energy Research Center--MIB-Solar, University of Milano-Bicocca, Via Cozzi 53, Milano I-20125, Italy Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Via P. Gobetti101, Bologna I-40129, Italy Consiglio Nazionale delle Ricerche, Istituto CNR di Scienze e Tecnologie Molecolari (CNR-Italy), Via Elce di Sotto 8, Perugia I-06213, Italy Laboratory MIST E-R, Via P. Gobetti101, Bologna I-40129, Italy (literal)
Titolo
  • A vinylene-linked benzo[1,2-b:4,5-b']dithiophene-2,1,3-benzothiadiazole low-bandgap polymer (literal)
Abstract
  • A new heteroarylene-vinylene donor-acceptor polymer P(BDT-V-BTD) with reduced bandgap has been synthesized and its photophysical, electronic and photovoltaic properties investigated both experimentally and theoretically. The structure of the polymer comprises an unprecedented combination of a strong donor (4,8-dialkoxy-benzo[1,2-b:4,5-b']dithiophene, BDT), a strong acceptor (2,1,3-benzothiadiazole, BTD) and a vinylene spacer. The new polymer was obtained by a metal-catalyzed cross-coupling Stille reaction and fully characterized by NMR, UV-vis absorption, GPC, TGA, DSC and electrochemistry. Detailed ab initio computations with solvation effects have been performed for the monomer and model oligomers. The electrochemical investigation has ascertained the ambipolar character of the polymer and energetic values of HOMO, LUMO and bandgap matching materials-design rules for optimized organic photovoltaic devices. The HOMO and LUMO energies are consistently lower than those of previous heteroarylene-vinylene polymer while the introduction of the vinylene spacer afforded lower bandgaps compared to the analogous system P(BDT-BTD) with no spacer between the aromatic rings. These superior properties should allow for enhanced photovoltages and photocurrents in photovoltaic devices in combination with PCBM. Preliminary photovoltaic investigation afforded relatively modest power conversion efficiencies of 0.74% (AM 1.5G, 100 mW/cm2), albeit higher than that of previous heteroarylene-vinylene polymers and comparable to that of P(BDT-BTD). © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 (literal)
Prodotto di
Autore CNR

Incoming links:


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