Why Single-Walled Carbon Nanotubes Can Be Dispersed in Imidazolium-Based Ionic Liquids
文献类型：期刊论文
| 作者 | Wang, Jinyong; Chu, Haibin; Li, Yan |
| 刊名 | ACS NANO
 |
| 出版日期 | 2008-12-01 |
| 卷号 | 2期号:12页码:2540-2546 |
| 关键词 | Single-walled Carbon Nanotubes Imidazolium Ionic Liquids Van Der Waals Interaction Pi-pi Stacking Raman Spectra Ir |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/nn800510g |
| 英文摘要 | Spectroscopic and molecular modeling studies were performed to investigate the underlying dispersion mechanism of single-walled carbon nanotubes (SWCNTs) in imidazolium-based ionic liquids. Both the experimental and the simulation evidence indicate that the ionic liquids interact with SWCNTs through weak van der Waals interaction other than the previous assumed "cation-pi" interaction. Therefore the electronic structure of SWCNTs in the dispersions can be kept intrinsically. The SWCNTs do not significantly influence the local structure of the imidazolium cations, though the local environment of anions adjacent to SWCNTs is somewhat perturbed because of the interfacial effect. The ionic liquids basically keep their overall bulk phase organization. A pi-pi interaction-shielding model is proposed to account for the dispersion of SWCNTs in the ionic liquids. The ionic liquids, which possess very high dielectric constants, can effectively shield the strong pi-pi stacking interaction among SWCNTs and thus evidently disperse the SWCNTs. The retaining of SWCNTs' intrinsic property and the higher SWCNT content make the ionic liquids ideal media for the study and application of SWCNTs. |
| 语种 | 英语 |
| WOS记录号 | WOS:000262023600020 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/64791]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Yan |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Natl Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci,Key Lab Phys & Chem Nano, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jinyong,Chu, Haibin,Li, Yan. Why Single-Walled Carbon Nanotubes Can Be Dispersed in Imidazolium-Based Ionic Liquids[J]. ACS NANO,2008,2(12):2540-2546. |
| APA | Wang, Jinyong,Chu, Haibin,&Li, Yan.(2008).Why Single-Walled Carbon Nanotubes Can Be Dispersed in Imidazolium-Based Ionic Liquids.ACS NANO,2(12),2540-2546. |
| MLA | Wang, Jinyong,et al."Why Single-Walled Carbon Nanotubes Can Be Dispersed in Imidazolium-Based Ionic Liquids".ACS NANO 2.12(2008):2540-2546. |
入库方式： OAI收割
来源：化学研究所
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