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Dielectric Insights into the Microcosmic Behavior of Ionic Liquid-Based Self-Assembly—Microemulsions/Micelles
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2018-07-10 , DOI: 10.1021/acs.jpcb.8b03024 Cancan Zhang 1 , Haixia Rao 1 , Kongshuang Zhao 1
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2018-07-10 , DOI: 10.1021/acs.jpcb.8b03024 Cancan Zhang 1 , Haixia Rao 1 , Kongshuang Zhao 1
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Dielectric relaxation spectra of ([Bmim][BF4]/TX-100/p-xylene) microemulsions and ([Bmim][BF4]/TX-100) micelles were measured. A specific dielectric relaxation changing with the concentration of ionic liquids (ILs) was observed in the range of 106–108 Hz. When dielectric parameters were combined with the Einstein displacement equation and Bruggeman’s effective-medium approximation, the interaction between [Bmim][BF4] and p-(1,1,3,3-tetramethylbutyl) phenoxypolyoxyethyleneglycol (TX-100) in microemulsions/micelles was presented: because of the electrostatic interaction and van der Waals force, [Bmim][BF4] is bound around the polyethylene oxide (PEO) chains of TX-100, and once the electric field is added, ions of [Bmim][BF4] will move along the PEO chain. The dependence of dielectric and phase parameters such as relaxation time, permittivity, and volume fraction on the mass fraction of ILs presents an evidence for our proposals about the transition of both systems with the increase of IL content. In addition, it was confirmed that percolation is a unique phenomenon in microemulsions and the percolation mechanism here belongs to static percolation. The transition process of micelles with the change of IL content is presented from the dielectric view.
中文翻译：
基于离子液体的自组装微乳液/胶束的介电行为的介电洞察。
测量了（[Bmim] [BF 4 ] / TX-100 /对二甲苯）微乳液和（[Bmim] [BF 4 ] / TX-100）胶束的介电弛豫谱。在10 6 –10 8 Hz范围内观察到特定介电弛豫随离子液体（ILs）浓度的变化而变化。当介电参数与爱因斯坦位移方程和布鲁格曼有效介质近似值结合使用时，[Bmim] [BF 4 ]与对-（1,1,3,3-四甲基丁基）苯氧基聚氧乙二醇（TX-100）之间的相互作用为微乳液/提出了胶束：由于静电相互作用和范德华力，[Bmim] [BF 4]被束缚在TX-100的聚环氧乙烷（PEO）链上，一旦添加电场，[Bmim] [BF 4 ]的离子将沿着PEO链移动。介电常数和相参数（如弛豫时间，介电常数和体积分数）与IL的质量分数之间的相关性为我们提出的有关随IL含量增加两个系统的过渡提供了证据。另外，已经证实渗滤是微乳液中的独特现象，并且此处的渗滤机理属于静态渗滤。从介电角度介绍了随着IL含量变化的胶束过渡过程。
更新日期：2018-07-12
中文翻译：
基于离子液体的自组装微乳液/胶束的介电行为的介电洞察。
测量了（[Bmim] [BF 4 ] / TX-100 /对二甲苯）微乳液和（[Bmim] [BF 4 ] / TX-100）胶束的介电弛豫谱。在10 6 –10 8 Hz范围内观察到特定介电弛豫随离子液体（ILs）浓度的变化而变化。当介电参数与爱因斯坦位移方程和布鲁格曼有效介质近似值结合使用时，[Bmim] [BF 4 ]与对-（1,1,3,3-四甲基丁基）苯氧基聚氧乙二醇（TX-100）之间的相互作用为微乳液/提出了胶束：由于静电相互作用和范德华力，[Bmim] [BF 4]被束缚在TX-100的聚环氧乙烷（PEO）链上，一旦添加电场，[Bmim] [BF 4 ]的离子将沿着PEO链移动。介电常数和相参数（如弛豫时间，介电常数和体积分数）与IL的质量分数之间的相关性为我们提出的有关随IL含量增加两个系统的过渡提供了证据。另外，已经证实渗滤是微乳液中的独特现象，并且此处的渗滤机理属于静态渗滤。从介电角度介绍了随着IL含量变化的胶束过渡过程。
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