Correlation effects in the optical spectra of porphyrin oligomer chains: Exciton confinement and length dependence (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Correlation effects in the optical spectra of porphyrin oligomer chains: Exciton confinement and length dependence (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1063/1.4773582 (literal)

Alternative label

• Conor Hogan, Maurizia Palummo, Johannes Gierschner, and Angel Rubio (2013)
  Correlation effects in the optical spectra of porphyrin oligomer chains: Exciton confinement and length dependence
  in Journal of chemical physics online; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Conor Hogan, Maurizia Palummo, Johannes Gierschner, and Angel Rubio (literal)

Pagina inizio

• 024312 (literal)

Pagina fine

• 024312-12 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://link.aip.org/link/?JCP/138/024312/1 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 138 (literal)

Rivista

• Journal of chemical physics online (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 12 (literal)

Note

• Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Consiglio Nazionale delle Ricerche, Istituto di Struttura della Materia (CNR-ISM), via Fosso del Cavaliere 100, 00133 Rome, Italy Department of Physics, CNISM and European Theoretical Spectroscopy Facility (ETSF), University of Rome \"Tor Vergata,\" Via della Ricerca Scientifica 1, 00133 Roma, Italy Madrid Institute for Advanced Studies, IMDEA in Nanoscience, C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain Nano-Bio Spectroscopy Group and ETSF, Dpto. de Física de Materiales, Universidad del País Vasco UPV/EHU and Centro Mixto CSIC-UPV/EHU, Av. Tolosa 72, E-20018 San Sebastián, Spain (literal)

Titolo

• Correlation effects in the optical spectra of porphyrin oligomer chains: Exciton confinement and length dependence (literal)

Abstract

• Excited states of ethylene-linked free-base porphyrin oligomers and polymer are studied using many-body perturbation theory (MBPT) within the GW approximation and the Bethe-Salpeter equation. Trends in the electronic levels with oligomer length are analysed and the correct long-range behaviour in the band gap is obtained. High polarizabilities and strong redshifts in the optical absorption peaks are predicted in agreement with observations on other strongly conjugated oligoporphyrins. We explain these trends by means of spatial and spectral analyses of the exciton character. Although Wannier-Mott and charge-transfer excitons are identified in the optical spectra, the strongest polarizabilities are actually associated with small, tightly bound excitons (Frenkel-like), in contrast to expectations. Furthermore, the common procedure of extrapolating polymer properties from oligomer calculations is examined from a MBPT perspective. (literal)

Editore

• American Institute Of Physics (AIP) (Editore)

Prodotto di

• Institute of structure of matter (ISM) (Istituto)
• Microscopia a Scansione a Sonda Locale su sistemi nanostrutturati e materiali biologici (MD.P06.006.001) (Modulo)

Autore CNR

• CONOR DAVID HOGAN (Persona)

Insieme di parole chiave

• Keywords of "Correlation effects in the optical spectra of porphyrin oligomer chains: Exciton confinement and length dependence" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of structure of matter (ISM) (Istituto)
• Microscopia a Scansione a Sonda Locale su sistemi nanostrutturati e materiali biologici (MD.P06.006.001) (Modulo)

Autore CNR di

• CONOR DAVID HOGAN (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of chemical physics online (Rivista)

Editore di

• American Institute Of Physics (AIP) (Editore)

Insieme di parole chiave di

• Keywords of "Correlation effects in the optical spectra of porphyrin oligomer chains: Exciton confinement and length dependence" (Insieme di parole chiave)