Capillary electrophoretic and nuclear magnetic resonance studies of interactions between halophenols and ionic liquid or tetraalkylammonium cations.
Capillary electrophoretic and nuclear magnetic resonance studies of interactions between halophenols and ionic liquid or tetraalkylammonium cations.
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DOI：
10.1016/s0021-9673(03)00985-3
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发表时间：
2003-07
期刊：
影响因子：
--
通讯作者：
B. Čabovska;G. P. Kreishman;G. P. Kreishman;D. Wassell;A. Stalcup
中科院分区：
文献类型：
--
作者：
B. Čabovska;G. P. Kreishman;G. P. Kreishman;D. Wassell;A. Stalcup
采用毛细管电泳法研究了卤代酚类化合物与1-乙基-3-甲基咪唑四氟硼酸盐或四乙基铵四氟硼酸盐电解质之间的相互作用。在这两种情况下，增加卤素大小与增加的亲和力的电解质阳离子。对于异构体，邻位取代的异构体比帕拉异构体表现出更高的亲和力。在离子液体存在下分析物对的不可重现的CE结果刺激了卤代酚之间以及与电解质阳离子之间相互作用的研究。这些相互作用进行了探讨质子和氟一维NMR。NMR结果表明四乙基铵/碘苯酚和咪唑鎓/碘苯酚之间的相互作用的差异。核磁共振结果表明，碘苯酚之间的疏水堆积相互作用和可能类似的苯酚和咪唑之间的相互作用。
Aqueous capillary electrophoretic studies were performed to investigate interactions between halophenols and 1-ethyl-3-methylimidazolium tetrafluoroborate or tetraethylammonium tetrafluoroborate electrolytes. In both cases, increased halogen size correlated with increased affinity for the electrolyte cation. For isomers, the ortho substituted isomer exhibited higher affinity than the para isomer. Irreproducible CE results for analyte pairs in the presence of the ionic liquid stimulated investigations of the interactions between halophenols as well as with the cations of the electrolyte. These interactions were explored by proton and fluorine one-dimensional NMR. The NMR results indicated differences in the interactions between tetraethylammonium/iodophenols and imidazolium/iodophenols. The NMR results indicate hydrophobic stacking interactions between the iodophenols and possible similar interaction among phenols and imidazolium.