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

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2017年 / 139卷 / 24期

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.

引用

页码：8086 / 8089

页数：4

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