Femtosecond optical pump-probe reflectivity studies of spin-state photo-switching in the spin-crossover molecular crystals [Fe(PM-AzA)2(NCS)2]
Idioma
en
Article de revue
Este ítem está publicado en
Polyhedron. 2013-03-14, vol. 66, p. 123-128
Elsevier
Resumen en inglés
We report here on the ultrafast photo-switching dynamics of a Fe(II) molecular material [Fe(PM-AzA)2(NCS)2]. It undergoes a thermal spin-crossover which can be detected by magnetic measurements or by optical reflectivity. ...Leer más >
We report here on the ultrafast photo-switching dynamics of a Fe(II) molecular material [Fe(PM-AzA)2(NCS)2]. It undergoes a thermal spin-crossover which can be detected by magnetic measurements or by optical reflectivity. We use here femtosecond optical reflectivity to study the ultrafast photo-switching dynamics. Our results indicate that the HS state is reached from the LS state within less than 100 fs, through an intermediate MLCT state. This ultrafast relaxation from the electronic excited state towards the structurally relaxed HS state is followed by a vibrational cooling of the hot HS molecules within ≈1 ps timescale.< Leer menos
Palabras clave en inglés
Spin crossover
Femtochemistry
LIESST
Phase transitions
Laser spectroscopy
Proyecto europeo
FEDER
Orígen
Importado de HalCentros de investigación