| Benzonitrile as a Probe of Local Environment in Ionic Liquids | |
| Department | 绿色化学研究发展中心 |
Zhang SG(张世国); Zhang Y(张妍); Ma XY(马祥元) ; Lu LJ(卢六斤); He YD(何昱德); Deng YQ(邓友全); Deng YQ(邓友全)
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| 2013 | |
| Source Publication | Journal of Physical Chemistry B
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| ISSN | 1520-6106 |
| Volume | 117Issue:9Pages:2764-2772 |
| Abstract | Because of its sensitivity to chemical and electrostatic characteristics, nitrile group as an infrared (IR) probe to monitor the local structure, folding kinetics, and electrostatic environment of protein, or solvation of molecular solvents, has attracted increasing attention. Herein, by choosing benzonitrile and imidazolium ionic liquids (ILs) as the IR probe and model ILs, respectively, we report that the nitrile stretching vibration (νCN) could be utilized as a simple and substantial IR probe to monitor the local environment of ILs such as hydrogen bonding (H-bonding) as well as intrinsic electric field. In 1-alkyl-3-methylimidazolium-based non-hydroxyl ILs, the νCN is in a “free” state, and is less affected by the alkyl chain, while it significantly decreases with the effective anion charge. In 1-(2-hydroxyethyl)-3-methylimidazolium-based hydroxyl ILs, however, a distinct anion-dependent νCN forming H-bonding with the hydroxyl is also observed besides the “free” νCN band. The “free” component of νCN can be further employed to determine the intrinsic electric field in both non-hydroxyl (directly) and hydroxyl (indirectly by subtracting H-bonding contribution) ILs by using vibrational Stark effect. Moreover, the result suggests that benzonitrile is preferentially located in the charge domain in ILs and it could be a more suitable probe to report the ionic network rather than the nonpolar domain in ILs. |
| Subject Area | 物理化学与绿色催化 |
| DOI | 10.1021/jp312251q |
| Funding Organization | the National Natural Science Foundation of China (No. 21103208;21203219) |
| Indexed By | SCI |
| If | 3.377 |
| Language | 英语 |
| Funding Project | 绿色催化课题组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4912 |
| Collection | 绿色化学研究发展中心 |
| Corresponding Author | Deng YQ(邓友全) |
| Affiliation | Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Green Chem & Catalysis, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang SG,Zhang Y,Ma XY,et al. Benzonitrile as a Probe of Local Environment in Ionic Liquids[J]. Journal of Physical Chemistry B,2013,117(9):2764-2772. |
| APA | Zhang SG.,Zhang Y.,Ma XY.,Lu LJ.,He YD.,...&邓友全.(2013).Benzonitrile as a Probe of Local Environment in Ionic Liquids.Journal of Physical Chemistry B,117(9),2764-2772. |
| MLA | Zhang SG,et al."Benzonitrile as a Probe of Local Environment in Ionic Liquids".Journal of Physical Chemistry B 117.9(2013):2764-2772. |
| Files in This Item: | ||||||
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| Benzonitrile as a Pr（450KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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