Orientation and Structure of Ionic Liquid Cation at Air/[bmirn][BF4] Aqueous Solution Interface
文献类型：期刊论文
| 作者 | Deng, Gang-hua1; Li, Xia2; Guo, You-qi3; Liu, Shi-lin1; Lu, Zhou2; Guo, Yuan2 |
| 刊名 | CHINESE JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2013-10-01 |
| 卷号 | 26期号:5页码:569-575 |
| ISSN号 | 1674-0068 |
| 关键词 | Sum Frequency Generation Vibratinal Spectroscopy Ionic Liquid Aqueous Solution Interface Orientation |
| DOI | 10.1063/1674-0068/26/05/569-575 |
| 英文摘要 | The water-miscible room temperature ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) is a model system for studying the interactions between ionic liquid and water molecules. In this work the orientational structure of the low concentrated aqueous solution of [bmim][BF4] at the air/liquid interface was investigated by sum frequency generation vibrational spectroscopy. It has been found that at very low concentrations, the butyl chain exhibited a significant gauche defect, indicating a disordered conformation; and the cation ring oriented with a fairly small tilting angle at the surface. When the concentration increased, the cation ring tended to lie flat at the surface, and the gauche defects of the butyl chain decreased due to the intermolecular chain-chain interactions and the consequent more ordered interfacial molecular arrangement. Additionally, the anti-symmetric stretching mode in the PPP and SPS spectra exhibited a peak shift, showing that there exists more than one kind of orientation or chemical environment for the butyl CH3 group. These results may shed new light on understanding the surface behavior of water-miscible ionic liquids as well as the imidazolium based surfactants. |
| 语种 | 英语 |
| 出版者 | CHINESE PHYSICAL SOC |
| WOS记录号 | WOS:000326985400012 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/42025]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Lu, Zhou |
| 作者单位 | 1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Nanjing Univ Aeronaut & Astronaut, Nanjing 211106, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Gang-hua,Li, Xia,Guo, You-qi,et al. Orientation and Structure of Ionic Liquid Cation at Air/[bmirn][BF4] Aqueous Solution Interface[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2013,26(5):569-575. |
| APA | Deng, Gang-hua,Li, Xia,Guo, You-qi,Liu, Shi-lin,Lu, Zhou,&Guo, Yuan.(2013).Orientation and Structure of Ionic Liquid Cation at Air/[bmirn][BF4] Aqueous Solution Interface.CHINESE JOURNAL OF CHEMICAL PHYSICS,26(5),569-575. |
| MLA | Deng, Gang-hua,et al."Orientation and Structure of Ionic Liquid Cation at Air/[bmirn][BF4] Aqueous Solution Interface".CHINESE JOURNAL OF CHEMICAL PHYSICS 26.5(2013):569-575. |
入库方式： OAI收割
来源：化学研究所
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