Toward effective and reliable fluorescence energies in solution by a new state specific polarizable continuum model time dependent density functional theory approach (Articolo in rivista)

Type

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

Label

• Toward effective and reliable fluorescence energies in solution by a new state specific polarizable continuum model time dependent density functional theory approach (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Improta, Roberto; Scalmani, Giovanni; Frisch, Michael J.; Barone, Vincenzo (2007)
  Toward effective and reliable fluorescence energies in solution by a new state specific polarizable continuum model time dependent density functional theory approach
  in The Journal of chemical physics
  (literal)

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

• Improta, Roberto; Scalmani, Giovanni; Frisch, Michael J.; Barone, Vincenzo (literal)

Pagina inizio

• 074504 (literal)

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• 127 (literal)

Rivista

• ?The ?Journal of chemical physics (Rivista)

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• Pubblicazioni su rivista scientifica internazionale (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• [G. Scalmani, M.J. Frisch: Gaussian Inc, Wallingford, CT 06492 USA] [V. Barone: Università di Napoli Federico II] (literal)

Titolo

• Toward effective and reliable fluorescence energies in solution by a new state specific polarizable continuum model time dependent density functional theory approach (literal)

Abstract

• A state specific ?SS? model for the inclusion of solvent effects in time dependent density functional theory ?TD-DFT? computations of emission energies has been developed and coded in the framework of the so called polarizable continuum model ?PCM?. The new model allows for a rigorous and effective treatment of dynamical solvent effects in the computation of fluorescence and phosphorescence spectra in solution, and it can be used for studying different relaxation time regimes. SS and conventional linear response ?LR? models have been compared by computing the emission energies for different benchmark systems ?formaldehyde in water and three coumarin derivatives in ethanol?. Special attention is given to the influence of dynamical solvation effects on LR geometry optimizations in solution. The results on formaldehyde point out the complementarity of LR and SS approaches and the advantages of the latter model especially for polar solvents and/or weak transitions. The computed emission energies for coumarin derivatives are very close to their experimental counterparts, pointing out the importance of a proper treatment of nonequilibrium solvent effects on both the excited and the ground state energies. The availability of SS-PCM/ TD-DFT models for the study of absorption and emission processes allows for a consistent treatment of a number of different spectroscopic properties in solution. (literal)

Prodotto di

• Institute of biostructure and bioimaging (IBB) (Istituto)
• Caratterizzazione strutturale di biomolecole di interesse terapeutico mediante metodologie computazionali (PM.P01.022.002) (Modulo)

Autore CNR

• ROBERTO IMPROTA (Unità di personale interno)

Incoming links:

Autore CNR di

• ROBERTO IMPROTA (Unità di personale interno)

Prodotto

• Institute of biostructure and bioimaging (IBB) (Istituto)
• Caratterizzazione strutturale di biomolecole di interesse terapeutico mediante metodologie computazionali (PM.P01.022.002) (Modulo)

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

• ?The ?Journal of chemical physics (Rivista)