State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
Nanoscale. 2017 May 11;9(18):5822-5827. doi: 10.1039/c7nr00304h.
Smart control of surface wettability by ionic liquids (ILs) is significant for designing IL-related intelligent materials and devices. Herein, we present mixed molecular brushes comprised of poly(phenylethyl methacrylate) and 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (PPhEtMA-co-PFDMS) grafted surfaces that are capable of dynamically regulating 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIm][NTf]) wettability. H NMR and quartz crystal microbalance characterization demonstrate that the wettability changes result from a temperature-dominated cation-π interaction between [EMIm][NTf] and PPhEtMA-co-PFDMS brushes.
通过离子液体 (ILs) 实现表面润湿性的智能控制对于设计与 IL 相关的智能材料和设备具有重要意义。在此，我们提出了由聚（苯乙烯基甲基丙烯酸乙酯）和 1H,1H,2H,2H-全氟癸基三甲氧基硅烷 (PFDMS) 接枝表面组成的混合分子刷，该表面能够动态调节 1-乙基-3-甲基咪唑双（三氟甲基磺酰基）亚胺 ([EMIm][NTf]) 的润湿性。1H NMR 和石英晶体微天平表征表明，润湿性变化是由 [EMIm][NTf] 和 PPhEtMA-co-PFDMS 刷之间的温度主导的阳离子-π 相互作用引起的。
