King Abdullah University of Science and Technology (KAUST), Advanced Membranes and Porous Materials Center, Thuwal, 23955-6900, Kingdom of Saudi Arabia.
Adv Mater. 2017 Jul;29(26). doi: 10.1002/adma.201606641. Epub 2017 Apr 24.
This study describes the molecular-level design of a new type of filtration membrane made of crosslinked cyclodextrins-inexpensive macrocycles of glucose, shaped like hollow truncated cones. The channel-like cavities of cyclodextrins spawn numerous paths of defined aperture in the separation layer that can effectively discriminate between molecules. The transport of molecules through these membranes is highly shape-sensitive. In addition, the presence of hydrophobic (cavity) and hydrophilic (ester-crosslinked outer part) domains in these films results in high permeances for both polar and nonpolar solvents.
本研究描述了一种新型过滤膜的分子水平设计，该过滤膜由交联环糊精制成，环糊精是葡萄糖的廉价大环，形状为中空截头锥形。环糊精的通道状空腔在分离层中产生了无数具有确定孔径的通道，可以有效地对分子进行区分。分子通过这些膜的传输对形状非常敏感。此外，这些薄膜中存在疏水性（空腔）和亲水性（酯交联的外部部分）区域，导致极性和非极性溶剂都具有高渗透性。
