MRSEC Seminar: Metal-Organic Magnets Incorporating Redox-Active Semiquinoid Ligands: From Molecules to Materials

  • COLUMBIA UNIVERSITY 530 West 120th Street New York, NY, 10027 United States

Prof. David T. Harris
Department of Chemistry
Northwestern University

Date: Tuesday, November 1, 2016
Time: 4:00 pm
Place: 750 CEPSR
Host: Xavier Roy

 

ABSTRACT

Molecule-based metal-organic magnets offer several key advantages over their inorganic counterparts, such as chemical control and tunability of structure and function, solution-based synthesis and processability, and low density. These compounds may find use in applications including spin-based information storage and processing, the development of lightweight permanent magnets, and the magnetic separation of gases. All of these applications would benefit from a higher operational temperature, which is directly correlated to the strength of magnetic interactions within the compound. This presentation will describe our efforts to synthesize metal semiquinoid molecules and extended solids that feature strong magnetic exchange coupling between metal and ligand radicals. More specifically, it will present the synthesis and properties of new radical-bridged compounds comprising dinuclear molecular complexes, one-dimensional chain compounds, and two-dimensional layered materials. In addition to magnetic properties, electronic conductivity and optical properties of these compounds will be presented.