title: A chiral quadruple-stranded helicate cage for enantioselective recognition and separation.
abstract: The self-assembly of enantiopure pyridyl-functionalized metallosalan units affords a homochiral helicate cage, [Zn(8)L(4)Cl(8)], in which the optical rotation of each ligand is increased by a factor of 10 upon coordination. The octanuclear cage featuring a chiral amphiphilic cavity exhibits enantioselective luminescence enhancement by amino acids in solution. The cage exists in two different crystalline polymorphic forms that possess porous structures built of helicate cages interconnected by 1D channels or pentahedral cages and have the ability to separate small racemic molecules by adsorption but with different enantioselectivities.
authors.affiliation: School of Chemistry and Chemical Technology and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Weimin
authors.initials: W
authors.lastname: Xuan
authors.forename: Mengni
authors.initials: M
authors.lastname: Zhang
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Zhijie
authors.initials: Z
authors.lastname: Chen
authors.forename: Yong
authors.initials: Y
authors.lastname: Cui