info:eu-repo/semantics/article
Role of the charge-transfer state in the electronic absorption of protonated hydrocarbon molecules
Fecha
2010-12Registro en:
Alata, Ivan; Dedonder, Claude; Broquier, Michel; Marceca, Ernesto José; Jouvet, Christophe; Role of the charge-transfer state in the electronic absorption of protonated hydrocarbon molecules; American Chemical Society; Journal of the American Chemical Society; 132; 49; 12-2010; 17483-17489
0002-7863
CONICET Digital
CONICET
Autor
Alata, Ivan
Dedonder, Claude
Broquier, Michel
Marceca, Ernesto José
Jouvet, Christophe
Resumen
The vibrationally resolved electronic spectra of isolated protonated polycyclic aromatic hydrocarbons (PAHs)-naphthalene, anthracene, and tetracene-have been recorded via neutral photofragment spectroscopy. The S 1←S0 transitions are all in the visible region and do not show a monotonic red shift as a function of the molecular size, as observed for the neutral analogues. Comparison with ab initio calculations indicates that this behavior is due to the nature of the excited state, which has a pronounced charge-transfer character for protonated linear PAHs with an even number of aromatic rings. © 2010 American Chemical Society.