期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 24, 页码 8086-8089出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b02981
关键词
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资金
- NSFC [21661004, 21361002, 21290173, 21671202]
- National Postdoctoral Program for Innovative Talents [BX201600195]
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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