Quasi elastic neutron scattering characterization of the relaxation processes in a room temperature ionic liquid (Articolo in rivista)

Type

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

Label

• Quasi elastic neutron scattering characterization of the relaxation processes in a room temperature ionic liquid (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

Alternative label

• Triolo A. , Russina O., Arrighi V., Juranyi F., Janssen S., Gordon C. M. (2003)
  Quasi elastic neutron scattering characterization of the relaxation processes in a room temperature ionic liquid
  in THE JOURNAL OF CHEMICAL PHYSICS
  (literal)

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

• Triolo A. , Russina O., Arrighi V., Juranyi F., Janssen S., Gordon C. M. (literal)

Pagina inizio

• 8549 (literal)

Pagina fine

• 8557 (literal)

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

• 119 (literal)

Rivista

• THE JOURNAL OF CHEMICAL PHYSICS (Rivista)

Note

• ISI Web of Science (WOS) (literal)

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

• IPCF-CNR, Messina Italy Heriot-Watt University Edinburgh, UK (literal)

Titolo

• Quasi elastic neutron scattering characterization of the relaxation processes in a room temperature ionic liquid (literal)

Abstract

• We report the first quasielastic neutron scattering measurements on a room temperature ionic liquid: 1-n-butyl-3-methylimidazolium hexafluorophosphate, [bmim][PF6]. Data were collected using a medium resolution spectrometer as a function of temperature in the range 250–320 K. The dataunequivocally indicate the existence of two different relaxation processes: a fast, localized motion occurring in the subpicosecond range and a slower process spanning the subnanosecond regime. These results provide experimental support to recently published molecular dynamics simulations. Evidence for slower, unresolved dynamics (under the present experimental conditions) is also obtained. Both temperature and momentum transfer dependence of the intermediate incoherent dynamic structure factor were investigated, after Fourier transformation into the temporal domain. The fast process shows no appreciable Q- and T-dependence. On the other hand the slow process shows evidence of a complex, non-Debye and non-Arrhenius behavior. (literal)

Prodotto di

• Institute for chemical and physical processes (IPCF) (Istituto)

Autore CNR

• ALESSANDRO TRIOLO (Persona)

Incoming links:

Prodotto

• Institute for chemical and physical processes (IPCF) (Istituto)

Autore CNR di

• ALESSANDRO TRIOLO (Persona)

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

• THE JOURNAL OF CHEMICAL PHYSICS (Rivista)