Influence of Substituents and Functional Groups on the Surface Composition of Ionic Liquids
作者:Claudia Kolbeck、Inga Niedermaier、Alexey Deyko、Kevin R. J. Lovelock、Nicola Taccardi、Wei Wei、Peter Wasserscheid、Florian Maier、Hans-Peter Steinrück
DOI:10.1002/chem.201304549
日期:2014.4.1
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.
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。从角度分辨X射线光电子能谱中,得出有关官能团表面富集以及阳离子和阴离子的分子取向的详细结论。这些系统包括在C2位甲基化的咪唑类IL,苯基官能化IL,烷氧基硅烷官能化IL,卤代官能化IL,硫醚官能化IL和胺官能化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。