Long-Lived Photoinduced Charges in Donor-Acceptor Anthraquinone-Substituted Thiophene Copolymers. (Articolo in rivista)

Type
Label
  • Long-Lived Photoinduced Charges in Donor-Acceptor Anthraquinone-Substituted Thiophene Copolymers. (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp056483g (literal)
Alternative label
  • Luzzati S.; Scharber M.; Catellani M.; Giacalone F.; Segura J.L.; Martin N.; Neugebauer H.; Sariciftci N. S. (2006)
    Long-Lived Photoinduced Charges in Donor-Acceptor Anthraquinone-Substituted Thiophene Copolymers.
    in The journal of physical chemistry. B; ACS, American chemical society, Washington, DC (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Luzzati S.; Scharber M.; Catellani M.; Giacalone F.; Segura J.L.; Martin N.; Neugebauer H.; Sariciftci N. S. (literal)
Pagina inizio
  • 5351 (literal)
Pagina fine
  • 5358 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://pubs.acs.org/doi/abs/10.1021/jp056483g (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 110 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • S. Luzzati, M. Catellani, ISMAC-CNR Giacalone F.; Segura J.L.; Martin N. Departamento de Qu?mica Organica, UniVersidad Complutense, Madrid, Spain Neugebauer H.; Sariciftci N. S. Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler UniVersity, Linz, Austria (literal)
Titolo
  • Long-Lived Photoinduced Charges in Donor-Acceptor Anthraquinone-Substituted Thiophene Copolymers. (literal)
Abstract
  • The photoinduced charge-transfer properties of a series of polyalkylthiophene copolymers, carrying anthraquinone substituents covalently linked to the conjugated backbone, have been studied in the solid state by photoinduced absorption (PA) and light-induced electron spin resonance (LESR) spectroscopy. The measurements indicate the formation of metastable charges arising from the photoinduced electron transfer from the polythiophene backbone to the anthraquinone moieties. At low temperatures (below 200 K), long-lived persistent charges are formed, exhibiting lifetimes that extend for several minutes; their recombination kinetics has been studied by following the formation and decay of the PA and LESR signals. The results are rationalized using a model originally proposed to describe the low-temperature recombination kinetics of long-lived photoexcited carriers in amorphous inorganic semiconductors. It is clearly evidenced that, in these polymers, the number of acceptor substituents in the chain, easily tuned by chemical tailoring, plays a key role in the photoexcitation scenario. (literal)
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