Time-resolved optical Kerr effect measurements in aqueous ionic solutions
Anno: 1994
Autori: Santa I., Foggi P., Righini R., Williams J.H.
Affiliazione autori: European Laboratory for Non-Linear Spectroscopy, University of Florence, Largo E. Fermi, 2 (Arcetri), I-50125 Florence, Italy; Science, Thomas House, George IV Street, Cambridge CB2 1HH, United Kingdom; Department of Physics, Janus Pannonius University, Ifjusag u.6, Pécs, Hungary
Abstract: We report the molecular dynamics of several solvated ions present in aqueous ionic solutions (HCl, HNO3, NaCl, and NaNO3) investigated by femtosecond time-resolved optical Kerr effect measurements. From the accurate fitting of decay curves, measured over 5-6 decades of intensity range, it has been possible to characterize (i) an instantaneous electronic response, (ii) a fast contribution of water, (iii) a rotational relaxation of the individual ions (trot ~ 2-3 ps), and (iv) a slow concentration-dependent decay connected to the direct ion-ion interactions. These results will be of interest to those seeking to measure electro-optic effects in aqueous solutions as these experiments give new information on the nature of the aqueous state.
Giornale/Rivista: JOURNAL OF PHYSICAL CHEMISTRY
Volume: 98 (31) Da Pagina: 7692 A: 7701
Parole chiavi: Neutron-diffraction; Binary-solutionsDOI: 10.1021/j100082a047Citazioni: 21dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui