Seminario del ICMA de Joel S. Miller: Molecule-based Magnets: New Materials for this Millennium. Viernes 4 de abril

El próximo viernes día 4 de abril a las 12:30 horas, en el Salón de Actos del Edificio de Matemáticas de la Facultad de Ciencias de la Universidad de Zaragoza, tendrá lugar el seminario: Molecule-based Magnets: New Materials for this Millennium, impartido por Joel S. Miller de la University of Utah. Resumen: Molecule-based materials exhibiting the technologically important property of bulk magnetism have been prepared and studied in collaboration with many research groups worldwide frequently exhibit supramolecular extended 3-D structures. These magnets are prepared via conventional organic synthetic chemistry methodologies, but unlike classical inorganic-based magnets do not require high-temperature metallurgical processing. Furthermore, these magnets are frequently soluble in conventional solvents (e. g., toluene, dichloromethane, acetonitrile, THF) and have saturation magnetizations more than twice that of iron metal on a mole basis, as well as in some cases coercive fields exceeding that of all commercial magnets (e.g., Co5Sm). Also several magnets with critical temperatures (Tc) exceeding room temperature have been prepared. In addition to an overview of magnetic behavior, numerous examples of structurally characterized magnets made from molecules will be presented. Our groups has discovered 8 families of molecule-based magnets, mostly organic-based, and have significantly contributed to an eight family based upon the Prussian blue structure. Four examples magnetically order above room temperature and as high at 127ºC. The organic chemistry crucial to designing and preparing organic-based magnets will be discussed. Cartel
Cartel