Abstract Self-standing polymer membranes with nanopores were prepared by polymerization of a liquid-crystalline (LC) columnar mixture of a taper-shaped molecule having a photocleavable moiety and a lithium salt. The photocleavable moiety, o-nitrobenzyl ester links the dendritic polymerizable hydrophobic part containing vinyl groups and a hydrophilic tri(oxyethylene) chain. The mixture of the taper-shaped molecule and lithium triflate forms a columnar LC phase at a temperature range wider than 50 °C. Self-standing polymer membranes with nanostructures were prepared by acyclic diene metathesis (ADMET) polymerization of the LC mixtures. Ordered anionic nanochannels were formed in the polymer membranes by photocleavage reaction of the linkers between the polymerized hydrophobic part and the non-polymerizable hydrophilic part. The nanoporous membranes showed selective adsorption of cationic organic dyes from their aqueous solutions depending on charges and sizes of the molecules.

中文翻译：

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基于光裂解柱状液晶的功能性纳米多孔膜的开发——离子染料的选择性吸附

摘要 具有纳米孔的自支撑聚合物膜是通过聚合具有光可裂解部分的锥形分子和锂盐的液晶 (LC) 柱状混合物制备的。光可裂解部分邻硝基苄酯连接含有乙烯基的树枝状可聚合疏水部分和亲水性三（氧乙烯）链。锥形分子和三氟甲磺酸锂的混合物在超过 50°C 的温度范围内形成柱状 LC 相。通过LC混合物的无环二烯复分解（ADMET）聚合制备具有纳米结构的自支撑聚合物膜。通过聚合的疏水部分和不可聚合的亲水部分之间的接头的光裂解反应，在聚合物膜中形成有序的阴离子纳米通道。