Generation of high-density information storage represents one of the main challenges in current data prosessing research. One very promising approach for drastic increases in storage capacity is to shrink the single storage unit (bit) to its fundamental limit, a single molecule. Bulk-like magnetic behavior was first observed in a Mn12–acetate cluster that retained its magnetization up to 3 K.[1] Such single-molecule magnets (SMMs) have potential applications in high density information storage and computing, however, their operating temperatures need to rise. In recent years, intensive research on many SMMs revealed that multiple relaxation pathways prevent slow relaxation of the magnetization with the most important being quantum tunneling of the magnetization (QTM). Recent investigations on radical-bridged complexes containing highly anisotropic lanthanides have attracted wide interest since it was shown that magnetic exchange coupling between lanthanide ions through open-shell bridging ligands suppresses QTM pathways, thereby enabling significantly increased operating temperatures up to 30 K.[2] Here, we will show the synthesis and characterization of new multinuclear organolanthanide complexes. In particular, a comparison of the magnetization dynamics of bimetallic complexes where the lanthanides are bridged through diamagnetic and paramagnetic ligands, respectively, will be presented.

Organolanthanide single-molecule magnets

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.