自旋交叉和单分子磁体行为的可逆通断切换——一种晶对晶转变

Reversible on-off switching of both spin crossover and single-molecule magnet behaviours a crystal-to-crystal transformation.

作者信息

Shao Dong, Shi Le, Yin Lei, Wang Bao-Lin, Wang Zhen-Xing, Zhang Yi-Quan, Wang Xin-Yi

机构信息

State Key Laboratory of Coordination Chemistry , Collaborative Innovation Center of Advanced Microstructures , School of Chemistry and Chemical Engineering , Nanjing University , Nanjing , 210023 , China . Email:

Wuhan National High Magnetic Field Centre , Huazhong University of Science and Technology , Wuhan , 430074 , China.

出版信息

Chem Sci. 2018 Aug 27;9(41):7986-7991. doi: 10.1039/c8sc02774a. eCollection 2018 Nov 7.

The on-off switching of spin-crossover (SCO) and single-molecule magnetism (SMM) remains highly attractive, especially if it involves dynamic crystal-to-crystal transformation. Herein we report the first molecule, a mononuclear cobalt(ii) complex, that exhibits on-off switching between SCO and SMM reversibly during crystal-to-crystal transformation. Subtle structural transformation triggered by a simple dehydration-rehydration process induces significant geometrical changes of the Co center and modification of the supramolecular interactions and switches its colour and magnetic properties (dark red/SCO-on/SMM-off ↔ orange/SCO-off/SMM-on). This work suggests that modification of the weak supramolecular interactions could be very effective in achieving switchable materials involving both SCO and SMM properties.