Magnetic molecules on surfaces: SMMs and beyond

Lanthanide-directed metal–organic coordination networks

“…4,17,21,22,[29][30][31][32][33][34] The current state of the art SMMs are based on Dy metallocenes, with Cp derivatives in axial positions (Cp = cyclopentadienyl anion), which have allowed to reach blocking temperatures above 80 K, 23 and coercive fields higher than 14 T (in this case with two Dy ions). 35 Ordered arrays of lanthanide atoms on solid surfaces An essential requisite to incorporate SMMs (or SIMs) in technological devices is the feasibility to place them on a certain surface, 4,36 while maintaining a long range order and keeping intact their magnetic properties. Herein, one of the main concerns is to comprehend how the interaction with the surface could be detrimental for the magnetic properties of the molecular magnet.…”

“…[37][38][39][40][41][42][43] Since the birth of the field, different approaches were followed trying to elucidate the role of the substrate and to achieve the preservation of the magnetic functionalities, using both wet methods or vapour deposition techniques. 36,[44][45][46] In this review, we will restrict to sublimation of species in ultra-high vacuum, which is the cleanest protocol to deposit molecules on a solid surface.…”

“…An essential requisite to incorporate SMMs (or SIMs) in technological devices is the feasibility to place them on a certain surface, 4,36 while maintaining a long range order and keeping intact their magnetic properties. Herein, one of the main concerns is to comprehend how the interaction with the surface could be detrimental for the magnetic properties of the molecular magnet.…”

STM studies on porphyrins and phthalocyanines at the liquid/solid interface for molecular-scale electronics

“…Taking bis(phthalocyaninato) terbium complexes ([TbPc 2 ] n + , n = 0, −1) as an example, the magnetization relaxation of [TbPc 2 ] n + has been examined on many surfaces, some of which enhance hysteresis loops, whereas others quench the hysteresis. 43…”

“…Taking bis( phthalocyaninato) terbium complexes ([TbPc 2 ] n+ , n = 0, −1) as an example, the magnetization relaxation of [TbPc 2 ] n+ has been examined on many surfaces, some of which enhance hysteresis loops, whereas others quench the hysteresis. 43 Inose et al have presented an interesting study on the switching of the magnetic properties of Tb III -porphyrin double-decker complexes. The complex, abbreviated as (OEP)-Tb III , has three dissimilar electronic structures, namely protonated, anionic, and radical forms (Fig.…”