离子液体作为表面改性剂的应用:新型氟烷基端端乙烯三甲氧基硅烷低聚物-三正丁基-[(3-三甲氧基硅基)丙基]氯化磷二氧化硅纳米复合材料的超亲水性和疏油性切换行为

H. Sawada, Yoshitaka Okada, Yuki Goto, Takayuki Fukui, T. Shibukawa, S. Kodama, Masashi Sugiya
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引用次数: 1

摘要

在磷酸型离子液体三正丁基-[3-(三甲氧基硅基)丙基]氯化磷的存在下,在碱性条件下通过相应的低聚物溶胶-凝胶反应制备了新型氟烷基端盖乙烯基三甲氧基硅烷低聚物-离子液体二氧化硅纳米复合材料。研究发现,这些含氟纳米复合材料可用于玻璃表面改性,改性后的玻璃表面表现出由纳米复合材料中的氟烷基赋予的高疏油性。有趣的是,当纳米复合材料的表面环境从空气变为水时,这种改性玻璃表面表现出亲水性阳离子离子液体片段的超亲水性,这是通过纳米复合材料中氟烷基和离子液体片段之间的翻转运动产生的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Application of Ionic Liquid as Surface Modifier: Switching Behavior of Novel Fluoroalkyl End-capped Vinytrimethoxysilane Oligomer — Tri-n-butyl-[(3-trimethoxysilyl) propyl] phosphonium Chloride Silica Nanocomposites between Superhydrophilicity and Oleophobicity
New fluoroalkyl end-capped vinyltrimethoxysilane oligomer - ionic liquid silica nanocomposites were prepared by sol-gel reaction of the corresponding oligomer in the presence of phosphorus-type ionic liquid: tri-n-butyl- [3- (trimethoxysilyl) propyl] phosphonium chloride under alkaline conditions. These fluorinated nanocomposites were found to apply to the surface modification of glass, and the modified glass surface exhibited a high oleophobicity imparted by fluoroalkyl groups in nanocomposites. Interestingly, this modified glass surface was found to show superhydrophilicity derived from hydrophilic cationic ionic liquid segments through the flip-flop motion between fluoroalkyl groups and the ionic liquid segments in nancomposites when the surface environment is changed from air to water.
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