Anisotropy and size effects on the optical spectra of polycyclic aromatic hydrocarbons (Articolo in rivista)

Type
Label
  • Anisotropy and size effects on the optical spectra of polycyclic aromatic hydrocarbons (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp503054j (literal)
Alternative label
  • Cocchi C.[ 1,2 ]; Prezzi D.[ 1 ]; Ruini A.[ 1,2 ]; Caldas M.J.[ 3 ]; Molinari E.[ 1,2 ] (2014)
    Anisotropy and size effects on the optical spectra of polycyclic aromatic hydrocarbons
    in The journal of physical chemistry. A
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cocchi C.[ 1,2 ]; Prezzi D.[ 1 ]; Ruini A.[ 1,2 ]; Caldas M.J.[ 3 ]; Molinari E.[ 1,2 ] (literal)
Pagina inizio
  • 6507 (literal)
Pagina fine
  • 6513 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84906503426&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 118 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 33 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] CNR Ist Nanosci, Ctr S3, I-41125 Modena, Italy [ 2 ] Univ Modena & Reggio Emilia, Dipartimento Sci Fis Informat & Matemat, I-41125 Modena, Italy [ 3 ] Univ Sao Paulo, Inst Fis, BR-05508900 Sao Paulo, Brazil (literal)
Titolo
  • Anisotropy and size effects on the optical spectra of polycyclic aromatic hydrocarbons (literal)
Abstract
  • The electronic and optical properties of polycydic aromatic hydrocarbons (PAHs) present a strong dependence on their size and geometry. We tackle this issue by analyzing the spectral features of two prototypical classes of PM-Is, belonging to D-6h and D-2h symmetry point groups and related to coronene as multifunctional seed. While the size variation induces an overall red shift of the spectra and a redistribution of the oscillator strength between the main peaks, a lower molecular symmetry is responsible for the appearance of new optical features. Along with broken molecular orbital degeneracies, optical peaks split and dark states are activated in the low-energy part of the spectrum. Supported by a systematic analysis of the composition and the character of the optical transitions, our results contribute in shedding light to the mechanisms responsible for spectral modifications in the visible and near UV absorption bands of medium-size PAHs. (literal)
Prodotto di
Autore CNR

Incoming links:


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