DySc₂N@C₈₀ Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube

Abstract

DyScN@C is an endohedral metallofullerene showing single-molecule magnet (SMM) behavior. In this work, we encapsulated DyScN@C-SMMs into the internal one-dimensional nanospace of single-walled carbon nanotubes (SWCNTs). Using transmission electron microscopy, "peapod" structures were clearly observed. From magnetic field dependent measurements, DyScN@C showed stepwise hysteresis characteristic of SMMs even inside the SWCNTs, and the coercivity increased from 0.5 to 4 kOe. In addition, it showed slow relaxation of the magnetization without an applied external magnetic field. This system is the first example where SMMs have been encapsulated in SWCNTs, and this system could be used in future molecular-spintronics devices.

Fullerenes as Key Components for Low‐Dimensional (Photo)electrocatalytic Nanohybrid Materials

“…Several synthetic strategies have been used to create diverse types of these assemblies such as vdW assemblies, [136] covalently linked composites, [130] peapods, [140] and more recently the encapsulation and the covalent linkage of endohedral fullerenes to SWCNTs. [141,142] Although in-depth understanding of the photoenergy conversion processes of C 60 -SWCNT nanohybrids has been achieved, [143,144] their applications for electrocatalysis have been scarcely studied to date.H owever,t heir intermolecular charge-transfer properties have recently sparked attention in the fields of materials science and catalysis.…”

Endohedral metallofullerene single molecule magnets

“…将金属富勒烯单分子磁体做成一维阵列的方法 主要将金属富勒烯嵌入碳纳米管中形成"豆荚"型杂化 结构 [50~52] . 2018年, Yamashita研究组 [53] 通过将DySc 2 N@C 80 和单壁碳纳米管(SWCNT)混合, 然后在真空下 [53] .…”

“…Color online) TEM images (a, b) and structure model (c) of [DySc 2 N@C 80 ]@SWCNT, and magnetization curves of DySc 2 N@C 80 and [DySc 2 N@C 80 ]@SWCNT recorded at 1.8 K (d)[53] …”

Leveraging Surface Siloxide Electronics to Enhance Relaxation Properties of a Single-Molecule Magnet

“…Even with compelling methodologies such as formation of self-assembled monolayers, grafting on surfaces prefunctionalized with moieties present in the parent magnetic molecules, and simple adsorption onto the surface or within the pores of the solid matrix, the improvement or even preservation of the parent SMM's magnetic behavior is still rare, with some notable exceptions. [20][21][22][23][24][25][26][27][28][29][30][31] In contrast to the 'minimal perturbation' concept described above some groups explored deposition of single lanthanide atoms on the surfaces, [32][33][34][35] where direct interaction of the support with the metal center induces magnetic anisotropy (Figure 1a, right). [36] The lanthanide sites isolated in such fashion are the exemplars of the SMM concept, offering highest theoretical information density with single atom as a storage medium.…”