Kasper Pedersen: Non-Innocent Approaches to 2D Conductive Magnets

Department of Chemistry, Technical University of Denmark, kastp@kemi.dtu.dk , www.kemi.dtu.dk/pedersen  Metal-organic frameworks (MOFs) constitute a new family of designer-materials where metal ion nodes are connected by organic spacer molecules (ligands) to form a rigid framework. The combination of both inorganic and organic building blocks results in virtually endless possibilities for properties tuning and a structural diversity that surpasses all other materials. Nearly all of these materials are however intrinsically insulating and the observation of interesting magnetic phenomena is hampered by the large spatial separation between the constituent metal ions. In this talk I will present our synthetic approaches to 2D metal-organic networks in which magnetic ordering and high electrical conductivity coexist. The combination of reducing transition metal ions and p-conjugated organic linkers facilitates strong p-d conjugation, which results in significant electron and spin densities on the bridging ligands and thereby providing high electron mobility as well as high magnetic ordering temperatures. This synthetic principle, benefitting from ligand redox non-innocence, proffers new possibilities for e.g. synthetically tunable 2D magnetic conductors of relevance for molecular spintronics. Kasper S. Pedersen obtained his PhD in inorganic chemistry from the University of Copenhagen in 2014. He thereafter received a DFF-Sapere Aude Research Talent grant to pursue postdoctoral research in Bordeaux and Montreal. He returned to Denmark in 2017 as facilitated by a VILLUM Young Investigator starting grant. Since 2017 he has been a group leader and an assistant professor at the Department of Chemistry, Technical University of Denmark. His research group focuses on synthetic inorganic chemistry and materials discovery including novel types of metal-organic 2D materials, porous materials, and  spin-orbit entangled materials.