Recent advances in single molecule magnetism of dysprosium-metallofullerenes

Abstract

Encapsulation of dysprosium ions in fullerenes results in efficient air stable single molecule magnets, which can be used in preparation of various 1D, 2D, and 3D assemblies.

Rotation of fullerene molecules in the crystal lattice of fullerene/porphyrin: C60 and Sc3N@C80

“…1 The encapsulation of trimetallic nitride clusters is well known and the resulting nitride clusterfullerenes show great potential in biomedicine and molecular magnetism. [2][3][4][5][6][7][8] The dynamics of fullerene molecules in the crystal lattice are fundamentally interesting. Recently, we unraveled the temperature driven molecular spinning top movement of Ho 2 LuN/Lu 3 N nitride clusters inside librating I h (7)-C 80 fullerene cages (hereafter the symmetry notation I h (7) will be omitted for clarity) and circular movement of Dy 2 inside benzyl functionalized C 80 .…”

New Horizons in Chemical Functionalization of Endohedral Metallofullerenes

“…They showed that giant exchange interactions between lanthanide ions and the unpaired electron caused single-molecule magnetism of Dy 2 @C 80 (CH 2 Ph), with a record-high 100 s blocking temperature of 18 K, and a high thermal barrier of magnetization reversal of 613 K. Subsequent surveys of an array of M 2 @C 80 (CH 2 Ph) (M 2 = Y 2 , Gd 2 , Tb 2 , Dy 2 , Ho 2 , Er 2 , TbY, TbGd) revealed that the strong ferromagnetic coupling emerging from the delocalization of the unpaired electron spin, which glues the magnetic moments of the two lanthanide ions together, is responsible for the high-spin magnetic ground states in the singly bonded derivatives [68]. Particularly, Tb 2 @C 80 (CH 2 Ph) showed giant coercivity and the highest known blocking temperature among dinuclear lanthanide complexes [69,70]. Additionally, they showed singly bonded derivatives.…”

Endohedral metallofullerene single molecule magnets

“…要是稀土金属, 当内嵌的金属离子含有未成对电子时, 金属富勒烯具有顺磁性, 而内嵌的金属团簇则形成了 特殊的配位场, 使得金属富勒烯表现出单分子磁体性 质 [29,30] . 2012年, Greber研究组 [31] 发现了第一个金属富 勒烯单分子磁体⎯⎯内嵌氮化物金属富勒烯DySc 2 N@I h -C 80…”