Femtosecond optical pump-probe reflectivity studies of spin-state photo-switching in the spin-crossover molecular crystals [Fe(PM-AzA)2(NCS)2]

International audienceWe 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

Thérèse Desqueyroux

Ante

Présentation de François Mauriac de l'Académie Française

Mauriac François. Présentation de François Mauriac de l'Académie Française. In: Les Cahiers Max Jacob, N°4, 1954. Romanesques. Nouvelles. pp. 9-10

Biografía de Francois Mauriac

Escritor francés,Premio Nobel de Literatura 1952

Fotografía autografiada, gran formato.

Escritor francés,Premio Nobel de Literatura 1952

Le mal : roman

Colofó

Título: La fin de la nuit

Traductor tomado de verso de portadaTítulo original: La fin de la nuitTrad. tomado de v. de portTít. de la obra original: La fin de la nui