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首页> 外文期刊>Chemistry: A European journal >Influence of Substituents and Functional Groups on the Surface Composition of Ionic Liquids
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Influence of Substituents and Functional Groups on the Surface Composition of Ionic Liquids

机译：取代基和官能团对离子液体表面组成的影响

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摘要

We have performed a systematic study addressing the surface behavior of a variety of functionalized and nonfunctionalized ionic liquids (ILs). From angle-resolved X-ray photoelectron spectroscopy, detailed conclusions on the surface enrichment of the functional groups and the molecular orientation of the cations and anions is derived. The systems include imidazolium-based ILs methylated at the C2 position, a phenyl-functionalized IL, an alkoxysilane-functionalized IL, halo-functionalized ILs, thioether-functionalized ILs, and amine-functionalized ILs. The results are compared with the results for corresponding non-functionalized ILs where available. Generally, enrichment of the functional group at the surface is only observed for systems that have very weak interaction between the functional group and the ionic head groups.
机译：我们已经完成了针对各种功能化和非功能化离子液体（IL）的表面行为的系统研究。从角分辨X射线光电子能谱，得出有关官能团的表面富集以及阳离子和阴离子的分子取向的详细结论。该系统包括在C2位甲基化的基于咪唑的IL，苯基官能化的IL，烷氧基硅烷官能化的IL，卤素官能化的IL，硫醚官能化的IL和胺官能化的IL。将结果与可用的相应非功能化IL的结果进行比较。通常，仅对于官能团与离子头基团之间相互作用非常弱的系统，才能观察到表面官能团的富集。

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