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

Ryo Nakanishi; Jyunya Satoh; Keiichi Katoh; Haitao Zhang; Brian K Breedlove; Masahiko Nishijima; Yusuke Nakanishi; Haruka Omachi; Hisanori Shinohara; Masahiro Yamashita

doi:10.1021/jacs.8b06983

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

J Am Chem Soc. 2018 Sep 5;140(35):10955-10959. doi: 10.1021/jacs.8b06983. Epub 2018 Aug 22.

Authors

Affiliations

¹ WPI Research Center , Advanced Institute for Materials Research, Tohoku University , Sendai 980-8577 , Japan.
² Department of Chemistry, Graduate School of Science , Tohoku University , Sendai 980-8578 , Japan.
³ The Electron Microscopy Center , Tohoku University , Sendai 980-8577 , Japan.
⁴ Department of Chemistry & Institute for Advanced Research , Nagoya University , Nagoya 464-8601 , Japan.
⁵ Center for Spintronics Research Network (CSRN) , Tohoku University , Sendai 980-8577 , Japan.
⁶ School of Materials Science and Engineering , Nankai University , Tianjin 300350 , China.

PMID: 30125097
DOI: 10.1021/jacs.8b06983

Abstract

DySc₂N@C₈₀ is an endohedral metallofullerene showing single-molecule magnet (SMM) behavior. In this work, we encapsulated DySc₂N@C₈₀-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, DySc₂N@C₈₀ 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.

Publication types

Research Support, Non-U.S. Gov't