MARINO, Andrea; SERVOL, Marina; BERTONI, Roman; LORENC, Maciej; MAURIAC, Cindy; LETARD, Jean-François; COLLET, Eric

doi:10.1016/j.poly.2013.03.009

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

MARINO, Andrea
Institut de Physique de Rennes [IPR]

SERVOL, Marina
Institut de Physique de Rennes [IPR]

BERTONI, Roman
Institut de Physique de Rennes [IPR]

Langue

Article de revue

Ce document a été publié dans

Polyhedron. 2013-03-14, vol. 66, p. 123-128

Elsevier

Résumé en anglais

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.< Réduire

Mots clés en anglais

Spin crossover

Femtochemistry

LIESST

Phase transitions

Laser spectroscopy

DOI

http://dx.doi.org/10.1016/j.poly.2013.03.009

Projet Européen

FEDER

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026