Isotropic ordering of ions in ionic liquids on the sub-nanometer scale
文献类型：期刊论文
| 作者 | Chen, Hailong2; Chen, Xin1; Deng, Jingwen1; Zheng, Junrong1 |
| 刊名 | CHEMICAL SCIENCE
 |
| 出版日期 | 2018-02-14 |
| 卷号 | 9期号:6页码:1464-1472 |
| ISSN号 | 2041-6520 |
| DOI | 10.1039/c7sc05184k |
| 英文摘要 | This article investigates structures of ionic liquids. Using a high-powered multiple-mode two dimensional infrared spectroscopic technique, we measure the anisotropy of interionic vibrational coupling in ionic liquids. Such anisotropy reports the relative orientation between cations and anions. Surprisingly, opposite to the well-propagated idea of ion pairing, a random orientation between the nearest nonspherically symmetric cation and anion is observed in ionic liquids. On the one hand, numerous previous experiments and theoretical calculations have shown that ionic liquids are highly ordered at the mesoscale, forming a bicontinuous nanostructure of ionic domains and hydrophobic domains. On the other hand, our results clearly prove that the ion ordering within the ionic domains is essentially random. Such an ordering at the larger scale (nanometers) and a lack of ordering at the smaller scale (subnanometer) is very rare for most liquids, or may even be unique to ionic liquids. Herein, we propose that ionic liquids may be regarded as 3D interconnecting nanocomposites of molten-salt-like domains and molecular-liquid-like domains. Such unique structuring could explain the fact that ionic liquids, like composite materials, often possess favorable properties of both "ionic" and "molecular" components. |
| 语种 | 英语 |
| WOS记录号 | WOS:000424649300007 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45667]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zheng, Junrong |
| 作者单位 | 1.Peking Univ, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, CAS Key Lab Soft Matter Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Hailong,Chen, Xin,Deng, Jingwen,et al. Isotropic ordering of ions in ionic liquids on the sub-nanometer scale[J]. CHEMICAL SCIENCE,2018,9(6):1464-1472. |
| APA | Chen, Hailong,Chen, Xin,Deng, Jingwen,&Zheng, Junrong.(2018).Isotropic ordering of ions in ionic liquids on the sub-nanometer scale.CHEMICAL SCIENCE,9(6),1464-1472. |
| MLA | Chen, Hailong,et al."Isotropic ordering of ions in ionic liquids on the sub-nanometer scale".CHEMICAL SCIENCE 9.6(2018):1464-1472. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。