Synthesis and characterization of poly(ionic liquid)-grafted silica hybrid materials through surface radical chain-transfer polymerization and aqueous anion-exchange
Synthesis and characterization of poly(ionic liquid)-grafted silica hybrid materials through surface radical chain-transfer polymerization and aqueous anion-exchange
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DOI：
10.1016/j.matlet.2010.04.020
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发表时间：
2010-07-31
影响因子：
3
通讯作者：
Ihara, Hirotaka
中科院分区：
文献类型：
--
作者：
Qiu, Hongdeng;Sawada, Tsuyoshi;Ihara, Hirotaka
首次采用表面自由基链转移聚合法，将新型离子液体单体1-乙烯基-3-丁基咪唑溴化铵（1-vinyl-3-butylimidazolium bromide）与巯基丙基化二氧化硅（mercaptopropylsilica）聚合，合成了聚离子液体接枝二氧化硅材料。通过简单的水溶液阴离子交换反应，溴离子与其他三种无机阴离子（四氟硼酸根、六氟磷酸根和三氟甲磺酸根）进行了交换。采用元素分析、红外光谱、热重分析、X射线荧光光谱等手段对所得聚离子液体接枝二氧化硅材料进行了表征。通过静态水接触角的测量，验证了不同反离子的材料的润湿性。这类新材料在催化剂、萃取剂、色谱固定相等应用领域可能具有一定的潜力。（C）2010 Elsevier B. V.保留所有权利。
Poly(ionic liquid)-grafted silica materials were firstly synthesized by polymerization of 1-vinyl-3-butylimidazolium bromide as a new ionic liquid monomer on mercaptopropylated silica by surface radical chain-transfer polymerization. The bromide counterion was exchanged with three other inorganic anions including tetrafluoroborate, hexafluorophosphate, and trifuoromethanesulfonate through simple aqueous anion-exchange reaction. The obtained poly(ionic liquid)-grafted silica materials were characterized by elemental analysis, infrared spectra, thermogravimetric analysis, and X-ray fluorescence. The wettabilities of the materials with different counterions were verified by static water contact angle measurement. This kind of new materials may have some potential in applied fields such as used as a catalyst, an extractant, a chromatographic stationary phase, etc. (C) 2010 Elsevier B.V. All rights reserved.