Pulse radiolysis studies of functionally substituted imidazolium-based ionic liquids
文献类型：期刊论文
| 作者 | Fu, HY(付海英) ; Xing, ZG ; Cao, XY ; Wu, GZ(吴国忠) |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2012 |
| 卷号 | 57期号:21 |
| ISSN号 | 1001-6538 |
| 英文摘要 | The reactions of imidazolium-based ionic liquids having different substituent groups on the ring with hydrated electrons (e (aq) (-) ), hydroxyl radicals ((OH)-O-aEuro cent), and sulfate anion radicals (SO (4) (aEuro cent a') ) were investigated using nanosecond pulse radiolysis techniques. The spectra of these ionic liquids on reaction with e(aq) (-) all exhibited a similar peak at about 320 nm, and a typical peak for e (aq) (-) in aqueous ionic liquid solutions. The reaction rate constants for 1,3-disubstituted imidazolium-based ionic liquid hexafluorophosphates (BMIPF6) with e(aq) (-) were deduced to be 10(10) L mol(-1) s(-1), however the values were lower for trisubstituted ionic liquids. For example, the rate constant for 1-butyl-2,3-dimethylimidazolium tetrafluoroborate (BMMIBF4) was 5.5x10(9) L mol(-1) s(-1). Imidazolium-based ionic liquids reacted with hydroxyl radicals via adducts to produce a mixture of isomeric OH adducts, and the pk (a) value of the OH adducts was deduced to be 8.4 +/- 0.4 for 1-butyl-3-methylimdazolium tetrafluoroborate (BMIBF4). Moreover, imidazolium cations were also oxidized by SO4 (aEuro cent a') to produce bivalent cation radicals, which exhibit a peak at 320 nm, and these rate constants are of the same order of magnitude, i.e., 10(9) L mol(-1) s(-1), except that for 1-(2-hydroxyethyl)-3-methylimdazolium tetrafluoroborate with SO4 (aEuro cent a') (k=2.8x10(8) L mol(-1) s(-1)). Theoretical calculations were carried out to estimate the structures of the products of reduction by e(aq) (-1) and the results were related to the experimental data. |
| 语种 | 英语 |
| WOS记录号 | WOS:000306336100017 |
| 公开日期 | 2013-12-05 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/13264]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Fu, HY,Xing, ZG,Cao, XY,et al. Pulse radiolysis studies of functionally substituted imidazolium-based ionic liquids[J]. CHINESE SCIENCE BULLETIN,2012,57(21). |
| APA | Fu, HY,Xing, ZG,Cao, XY,&Wu, GZ.(2012).Pulse radiolysis studies of functionally substituted imidazolium-based ionic liquids.CHINESE SCIENCE BULLETIN,57(21). |
| MLA | Fu, HY,et al."Pulse radiolysis studies of functionally substituted imidazolium-based ionic liquids".CHINESE SCIENCE BULLETIN 57.21(2012). |
入库方式： OAI收割
来源：上海应用物理研究所
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。