文献类型：期刊文献

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

作者：Li, Xiaoxiao[1,2];Chen, Qibin[1,2];Tong, Xuefeng[1,2];Zhang, Shaoze[3,4];Liu, Honglai[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Kunming Univ Sci & Technol, Natl Engn Lab Vacuum Met, Kunming 650093, Yunnan, Peoples R China;[4]Kunming Univ Sci & Technol, Engn Lab Adv Battery & Mat Yunnan Prov, Kunming 650093, Yunnan, Peoples R China

年份：2021

卷号：634

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000660298200002)】；

基金：This work is supported by National Natural Science Foundation of China (No. 21576079, and 91834301) and the 111 Project of Ministry of Education of China (No. B08021) .

语种：英文

外文关键词：Graphene oxide; Enantioselectivity; Retarded transport; Membranes; High flux

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 (f-CD) was selected to serve as chiral selector in GObased membranes for separating racemates, since it potentially forms specific inclusion complexes with guests. Results show that fl-CD displays a much stronger enantioselective affinity toward L-enantiomer than D-enantiomer, so that such fl-CD modified GO membrane (fl-CD-GOM) exhibits a retarded transport mechanism, having exceptional enantioselectivities with the enantiomeric excess value of nearly 100%. Moreover, fl-CD-GOMs are 12 orders of magnitude higher in flux than traditional enantioseparation membranes. These findings demonstrate that fl-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.