Liu Yaodong, Zhang Yi, Wu Guozhong, Hu Jun
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
J Am Chem Soc. 2006 Jun 14;128(23):7456-7. doi: 10.1021/ja062685u.
In this communication, we report the coexistence of liquid and solid phases of room temperature ionic liquid (IL) [Bmim][PF6] on mica surfaces, observed by tapping mode atomic force microscopy (AFM) in air. Multilayers as well as drop-on-the-layer structures of the ionic liquid are revealed. The solid layers were very stable, and their orientations were affected by the mica lattice, indicating that the ionic liquid undergoes a template-induced ordering process. These results are helpful for advancing the understanding of interfacial structures of ILs on solid surfaces, the analogous structural patterns in both of its solid and liquid phases, and its heterogeneity.
在本通讯中，我们报告了通过空气中的轻敲模式原子力显微镜（AFM）观察到的室温离子液体（IL）[Bmim][PF6]在云母表面上液相和固相的共存情况。揭示了离子液体的多层结构以及层上液滴结构。固体层非常稳定，其取向受云母晶格影响，这表明离子液体经历了模板诱导的有序化过程。这些结果有助于加深对离子液体在固体表面的界面结构、其固相和液相中的类似结构模式以及其非均质性的理解。
