Dy@CN: a new member of dimetalloazafullerenes with strong single molecular magnetism

Enhancing the exchange interaction between magnetic ions is a long-term target in molecular magnetism. Endohedral metallofullerenes (EMFs) provide a possibility for achieving such a goal by imprisoning multiple magnetic centers inside the confined inner space of a fullerene cage. Here, we report a n...

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Bibliographic Details
Published in:Nanoscale 2020-05, Vol.12 (2), p.1113-11135
Main Authors: Wang, Yuanyuan, Xiong, Jin, Su, Jie, Hu, Ziqi, Ma, Fang, Sun, Rong, Tan, Xueyou, Sun, Hao-Ling, Wang, Bing-Wu, Shi, Zujin, Gao, Song
Format: Article
Language:English
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Summary:Enhancing the exchange interaction between magnetic ions is a long-term target in molecular magnetism. Endohedral metallofullerenes (EMFs) provide a possibility for achieving such a goal by imprisoning multiple magnetic centers inside the confined inner space of a fullerene cage. Here, we report a new member of dimetallic azafullerene Dy 2 @C 79 N via crystallographic determination for the first time. Magnetic studies indicate that the strong ferromagnetic coupling between lanthanide ions and unpaired electrons enables Dy 2 @C 79 N to be a favorable SMM with large energy barrier of U = 669 K and observable hysteresis loops below 24 K. The azafullerene Dy 2 @C 79 N is found to be a single molecule magnet with large energy barrier and high blocking temperature of magnetization.
ISSN:2040-3364
2040-3372
DOI:10.1039/d0nr02519d