阴离子表面活性剂SDS与离子液体[bmim][PF_6]的相互作用研究

Study on Interaction Between 1-Butyl-3-methylimidazolium Hexafluorophosphate ([bmim][PF_6]) and Anionic Surfactant Sodium Dodecyl Sulfate(SDS)

采用1HNMR、荧光发射光谱以及UV光谱研究了阴离子表面活性剂SDS与离子液体[bmim][PF6]的相互作用。结果表明,SDS胶束对[bmim][PF6]固有近紫外吸收和荧光发射具有显著敏化作用1。HNMR分析结果表明,[bmim][PF6]在SDS胶束中的增溶部位为SDS胶束的栅栏层,[bmim][PF6]渗入SDS胶束栅栏层的最大深度为SDS分子的C3亚甲基附近。

The interaction between an anionic surfactant, sodium dodecyl sulfate （SDS） and an ionic liquid, [bmim][PF6] was investigated by ^1HNMR, fluorescence emission spectroscopy and UV spectroscopy. The experimental result indicated that the formation of the SDS micelles made both the intrinsic total UV absorption and fluorescent emission of [bmim][PF6] enhanced remarkably. The solubilizing site of [bmim][PF6] was the palisade layer of SDS micelles, which was revealed by ^1HNMR analysis. Furthermore, the maximum depth of entrapped [bmim][PF6] within the SDS micelles palisade layer might nearby the C3 methylene.