Chemical Physics Letters, Vol.556, 82-88, 2013
Transient absorption spectroscopy of the [Fe(2 CH3-phen)(3)](2+) complex: Study of the high spin <-> low spin relaxation of an isolated iron(II) complex
We report on the light induced spin crossover dynamics of [Fe(2 CH3-phen)(3)](2+) complex in solution. The excitation of the complex by pulses centered at lambda = 500 nm along the metal to ligand charge transfer absorption band indicates a selective excitation of the LS state. The excitation of the complex by pulses centered at lambda = 330 nm or lambda = 335 nm reveals an increase of the LS state population and a photo-bleaching of the HS state population that is associated to a transient photo-dissociation. A method that makes it possible to deduce the kinetics of both the HS -> LS state and LS -> HS state is proposed. (C) 2012 Elsevier B. V. All rights reserved.