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Ferroelectricity Induced by Ordering of Twisting Motion in a Molecular Rotor
文献类型：期刊论文
| 作者 | Zhang, Yi1; Zhang, Wen1; Li, Shen-Hui2; Ye, Qiong1; Cai, Hong-Ling1; Deng, Feng2; Xiong, Ren-Gen1; Huang, Songping D.3 |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2012-07-04 |
| 卷号 | 134期号:26页码:11044-11049 |
| 英文摘要 | A novel mononuclear metal-organic compound, [Cu-(Hdabco)(H2O)Cl-3] (1, dabco = 1,4-diazabicyclo[2.2.2]octane) in which the Cu-II cation adopts a slightly distorted bipyramidal geometry where the three Cl anions constitute the equatorial plane and the Hdabco cation and H2O molecule occupy the two axial positions, was synthesized. Its paraelectric-to-ferroelectric phase transition at 235 K (T-c) and dynamic behaviors were characterized by single crystal X-ray diffraction analysis, thermal analysis, dielectric and ferroelectric measurements, second harmonic generation experiments, and solid-state nuclear magnetic resonance measurements. Compound 1 behaves as a molecular rotor above room temperature in which the (Hdabco) part rotates around the N center dot center dot center dot N axis as a rotator and the [Cu(H2O)Cl-3] part acts as a stator. In the temperature range 235-301 K, a twisting motion of the rotator is confirmed. Below the T, the motions of the rotor are frozen and the molecules become ordered, corresponding to a ferroelectric phase. Origin of the ferroelectricity was ascribed to relative movements of the anions and cations from the equilibrium position, which is induced by the order disorder transformation of the twisting motion of the molecule between the ferroelectric and paraelectric phases. Study of the deuterated analogue [Cu(Ddabco)(D2O)Cl-3] (2) excludes the possibility of proton ordering as the origin of the ferroelectricity in 1. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | PHASE-TRANSITION ; CRYSTALS ; DYNAMICS ; FRAMEWORKS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000305863900052 |
| 公开日期 | 2015-07-14 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1674]  |
| 专题 | 武汉物理与数学研究所_磁共振应用研究部 |
| 作者单位 | 1.Southeast Univ, Ordered Matter Sci Res Ctr, Nanjing 211189, Jiangsu, Peoples R China 2.Chinese Acad Sci, Wuhan Ctr Magnet Resonance, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom Mol Phys, Wuhan 430071, Peoples R China 3.Kent State Univ, Dept Chem, Kent, OH 44240 USA |
| 推荐引用方式 GB/T 7714 | Zhang, Yi,Zhang, Wen,Li, Shen-Hui,et al. Ferroelectricity Induced by Ordering of Twisting Motion in a Molecular Rotor[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2012,134(26):11044-11049. |
| APA | Zhang, Yi.,Zhang, Wen.,Li, Shen-Hui.,Ye, Qiong.,Cai, Hong-Ling.,...&Huang, Songping D..(2012).Ferroelectricity Induced by Ordering of Twisting Motion in a Molecular Rotor.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,134(26),11044-11049. |
| MLA | Zhang, Yi,et al."Ferroelectricity Induced by Ordering of Twisting Motion in a Molecular Rotor".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 134.26(2012):11044-11049. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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