Low concentration alcohols produced by state-of-the-art biological fermentation restrict subsequent purification processes for chemical, pharmaceutical, biofuel, and other applications. Herein, a rarely reported cucurbituril[n] (n = 6, 8) is employed to pattern the thin-film composite membranes with controllable and quantifiable nanostrand structures through a host–guest strategy. The resulting nanofiltration membrane with such morphology is the first report that exhibits excellent separation performance for isopropyl alcohol (IPA) and water, condensing the initial 0.5 wt % IPA aqueous solution to 9.0 wt %. This not only provides a novel strategy for patterning nanostructural morphology but also makes nanofiltration membranes promising for alcohol condensation in the biological fermentation industry that may reduce energy consumption and postprocessing costs.

中文翻译：

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葫芦素[ n ]基纳米滤膜的精确图案化纳米链表面可有效地进行醇水冷凝

通过最先进的生物发酵生产的低浓度醇限制了化学，制药，生物燃料和其他应用的后续纯化过程。在此，鲜有报道的葫芦科[ n ]（n= 6、8）通过宿主-客体策略，对具有可控和可量化纳米链结构的薄膜复合膜进行构图。所得具有这种形态的纳滤膜是首次报道，其显示出对异丙醇（IPA）和水的优异分离性能，将最初的0.5 wt％IPA水溶液冷凝为9.0 wt％。这不仅为图案化纳米结构形态提供了一种新颖的策略，而且使纳滤膜有望在生物发酵工业中进行醇缩合，从而可以减少能源消耗和后处理成本。