Hysteretic Three-Step Spin Crossover in a Thermo- and Photochromic 3D Pillared Hofmann-type Metal-Organic Framework.

Natasha F. Sciortino (1) , Katrin R. Scherl-Gruenwald (1) , Guillaume Chastanet (2) , Gregory J. Halder (3) , Karena W. Chapman (3) , Jean-François Létard (2) , Cameron J. Kepert (1)

1 School of Chemistry
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
3 XSD - X-ray Science Division

Multistability is exhibited by a metal-organic framework material that undergoes unique three-step spin crossover with 20 K thermal hysteresis. The stepwise transition is coupled to a three-step structural transformation that defines four distinct structural states. The material also exhibits reversible photo-induced spin crossover.

Mots clés: Hofmann framework; Metal-organic frameworks; Molecular electronics; Photophysics; Spin crossover

Domaines: Matériaux

Natasha F. Sciortino, Katrin R. Scherl-Gruenwald, Guillaume Chastanet, Gregory J. Halder, Karena W. Chapman, et al.. Hysteretic Three-Step Spin Crossover in a Thermo- and Photochromic 3D Pillared Hofmann-type Metal-Organic Framework.. Angewandte Chemie International Edition, 2012, 51 (40), pp.10154-10158. ⟨10.1002/anie.201204387⟩. ⟨hal-00738081⟩