Retraction of “Magnetic Hysteresis of Single-Molecule Magnets Adsorbed on Ferromagnetic Substrate”

Actinide Coordination Chemistry on Surfaces: Synthesis, Manipulation, and Properties of Thorium Bis(porphyrinato) Complexes

“…Single-molecule characterization, supramolecular assembly, and chemistry directly on surfaces remain unexplored–in stark contrast to the lanthanide counterparts (see below). Metal surfaces, however, provide excellent platforms to assemble and synthesize metal–organic complexes and functional molecular architectures and to control and monitor the structural, electronic, and magnetic properties under ultrahigh-vacuum (UHV) conditions. − Moreover, two-dimensional materials and ultrathin films can be used to reduce molecule–metal interactions that can adversely affect or mask intrinsic molecular properties, with a monolayer of insulating hexagonal boron nitride ( h -BN) being a prominent example of such a decoupling layer. , Indeed, surface science experiments and complementary theoretical modeling have provided exciting insights into lanthanide-based tetrapyrrole complexes and coordination architectures on model surfaces, with pioneering studies on double-decker and multidecker structures, − including TbPc 2 as an exemplary single-ion molecular magnet. − Thin decoupling layers were applied to improve the stability of the magnetic properties , or to manipulate the charge state of lanthanide–tetrapyrrole double-deckers . As a downside, the intact deposition of such complexes by sublimation in a UHV environment poses severe challenges, with thermally induced molecular fragmentation or modifications often interfering with clean, homogeneous adsorbate structures, ,, even though molecular functionalization can favor successful deposition .…”