Time-resolved dynamics in iodide-uracil-water clusters upon excitation of the nucleobase.
J Chem Phys
; 151(15): 154304, 2019 Oct 21.
Article
em En
| MEDLINE
| ID: mdl-31640364
ABSTRACT
The dynamics of iodide-uracil-water (I-·U·H2O) clusters following π-π* excitation of the nucleobase are probed using time-resolved photoelectron spectroscopy. Photoexcitation of this cluster at 4.77 eV results in electron transfer from the iodide moiety to the uracil, creating a valence-bound anion within the cross correlation of the pump and probe laser pulses. This species can decay by a number of channels, including autodetachment and dissociation to I- or larger anion fragments. Comparison of the energetics of the photoexcited cluster and its decay dynamics with those of the bare iodide-uracil (I-·U) complex provides a sensitive probe of the effects of microhydration on these species.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Uracila
/
Água
/
Iodetos
Idioma:
En
Revista:
J Chem Phys
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Estados Unidos