6. Thanks

The author would like to thank the CNRS, the University of Bordeaux, the Région Nouvelle Aquitaine, the Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) and all its staff, as well as funding agencies. The author would also like to thank all the collaborators around the world who have placed their trust in him over the past 15 years, all the members of the French Magnetism and Molecular Switching network, and in particular all the permanent and non-permanent members of the ICMCB Molecules and Switchable Materials team for their contributions and unfailing support over many years.