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Crystalline Supramolecular Gyroscope with a Water Molecule as an Ultrasmall Polar Rotator Modulated by Charge-Assisted Hydrogen Bonds
被引:79
|作者:
Li, Wang
[1
]
He, Chun-Ting
[2
]
Zeng, Ying
[1
]
Ji, Cheng-Min
[3
]
Du, Zi-Yi
[1
]
Zhang, Wei-Xiong
[2
]
Chen, Xiao-Ming
[2
]
机构:
[1] Gannan Normal Univ, Coll Chem & Chem Engn, Key Lab Jiangxi Univ Funct Mat Chem, Ganzhou 341000, Peoples R China
[2] Sun Yat Sen Univ, Sch Chem, MOE Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China
[3] Chinese Acad Sci, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China
关键词:
METAL-ORGANIC FRAMEWORKS;
SOLID-STATE DYNAMICS;
ROTATIONAL-DYNAMICS;
3-SPOKE STATORS;
ROTORS;
TRANSITION;
MACHINES;
MOTION;
METATHESES;
COMPASSES;
D O I:
10.1021/jacs.7b02981
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A new strategy for the construction of crystalline molecular rotors is presented. The combination of a conformation-modifiable macrocyclic host and two cooperative guests affords one supramolecular gyroscope like compound, (t-BuNH3)(18-crown-6) [ZnCl3(H2O)], in which the coordinated water' molecule functions as an ultrasmall polar rotator, revealed by its significant dielectric relaxation and the molecular dynamics simulations. In addition, such a compound can reversibly undergo a polar to-polar phase transition triggered by the changed conformation of the 18-crown-6 host, leading to a switchable on/off rotation of water molecule, well controlled by strength and direction of charge-assisted hydrogen bonds.
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页码:8086 / 8089
页数:4
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