Cation effects in the separation of calix[4]pyrroles by nonaqueous capillary electrophoresis with tetraalkylammonium chloride salts as background electrolytes
文献类型：期刊论文
| 作者 | Liu X(刘霞) ; Shao SJ(邵士俊); Jiang SX(蒋生祥); Jiang SX(蒋生祥)
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| 刊名 | Journal of Chromatography A
 |
| 出版日期 | 2008 |
| 卷号 | 1192页码:180-186 |
| 关键词 | Calix[4]pyrrole Tetraalkylammonium chloride Nonaqueous capillary electrophoresis Hydrogen-bond effect Cation effects |
| ISSN号 | 0021-9673 |
| 通讯作者 | 蒋生祥 |
| 中文摘要 | The migration behavior of three calix[4]pyrroles (C4Ps) in acetonitrile (ACN) and in the mixtures of ACN/ethanol (EtOH) (95:5; v/v)with tetraalkylammonium chloride as background electrolyte (BGE) was studied. Electroosmotic flow (EOF) mobilities and absolute mobilities in ACN and mixture of ACN/EtOH (95:5; v/v) were investigated. A decrease of EOF mobilities in EtOH/ACN was observed compared with that of in pure ACN. Variation of the C4Ps effective mobilities as a function of the square root of concentration of tetraakylammonium chloride salts such as tetramethylammonium chloride (Me4NCl), tetraethylammonium chloride (Et4NCl) and tetrabutylammonium chloride (Bu4NCl) in both solvents was plotted, and straight lines were exhibited when Bu4NCl was used as BGE. Absolute mobilities of C4Ps were obtained by extrapolation from the mentioned plots. It was found that the absolute mobilities of C4Ps is independent of the nature of BGE and the values are: meso-octamethylcalix[4]pyrrole (OMCP) > meso-tetracyclopentylcalix[4]pyrrole (TPCP) > meso-tetracyclohexylcalix[4]pyrrole (THCP). The ion-pairing constants follow the order under given solvent: Me4N+ >Et4N+ >Bu4N+, and ion-pairing constant of C4P follows the order: THCP > TPCP >OMCP. As though, ion-pairing association is intensified by steric hindrance. |
| 学科主题 | 分析化学与药物化学 |
| 收录类别 | SCI |
| 资助信息 | the National Natural Science Foundation of China through the number 20527005 and 20775084. |
| 语种 | 英语 |
| WOS记录号 | WOS:000256200700023 |
| 公开日期 | 2012-10-11 |
| 源URL | [http://210.77.64.217/handle/362003/1385]  |
| 专题 | 兰州化学物理研究所_中科院西北特色植物资源化学重点实验室/甘肃省天然药物重点实验室 |
| 通讯作者 | Jiang SX(蒋生祥); Jiang SX(蒋生祥) |
| 推荐引用方式 GB/T 7714 | Liu X,Shao SJ,Jiang SX,et al. Cation effects in the separation of calix[4]pyrroles by nonaqueous capillary electrophoresis with tetraalkylammonium chloride salts as background electrolytes[J]. Journal of Chromatography A,2008,1192:180-186. |
| APA | 刘霞,邵士俊,蒋生祥,&蒋生祥.(2008).Cation effects in the separation of calix[4]pyrroles by nonaqueous capillary electrophoresis with tetraalkylammonium chloride salts as background electrolytes.Journal of Chromatography A,1192,180-186. |
| MLA | 刘霞,et al."Cation effects in the separation of calix[4]pyrroles by nonaqueous capillary electrophoresis with tetraalkylammonium chloride salts as background electrolytes".Journal of Chromatography A 1192(2008):180-186. |
入库方式： OAI收割
来源：兰州化学物理研究所
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