文献类型：期刊文献

英文题名：Chiral separation of β-cyclodextrin modified graphene oxide membranes with a complete enantioseparation performance

作者：Li, Xiaoxiao[1]; Chen, Qibin[1]; Tong, Xuefeng[1]; Zhang, Shaoze[2,3]; Liu, Honglai[1]

机构：[1] State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan province, 650093, China; [3] Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, Yunnan province, 650093, China

年份：2021

卷号：634

外文期刊名：Journal of Membrane Science

收录：EI(收录号：20213010666488)

语种：英文

外文关键词：Graphene - Enantiomers - Stereochemistry - Physicochemical properties - Chirality - Cyclodextrins - Separation - Membranes

摘要：The separation of racemates remains a great challenge as they are enantiomers with similar chemical structures and physicochemical properties in achiral environments. Recently, graphene oxide (GO) based membranes modified with various chiral selectors had been proved to allow for both high permeation flux and enantioselectivity. Herein, mono(6-amino-6-deoxy)-beta-cyclodextrin (β-CD) was selected to serve as chiral selector in GO-based membranes for separating racemates, since it potentially forms specific inclusion complexes with guests. Results show that β-CD displays a much stronger enantioselective affinity toward l-enantiomer thand-enantiomer, so that such β-CD modified GO membrane (β-CD-GOM) exhibits a retarded transport mechanism, having exceptional enantioselectivities with the enantiomeric excess value of nearly 100%. Moreover, β-CD-GOMs are 1-2 orders of magnitude higher in flux than traditional enantioseparation membranes. These findings demonstrate that β-CD-GOMs could provide new opportunities for improving enantioseparation performances with both high permeability and high permselectivity and for the large-scale production of various enantiomers. ? 2021 Elsevier B.V.