A Chiral Quadruple-Stranded Helicate Cage for Enantioselective Recognition and Separation

The self-assembly of enantiopure pyridyl-functionalized metallosalan units affords a homochiral helicate cage, [Zn8 L 4Cl8], 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 enantioselec...

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Published inJournal of the American Chemical Society Vol. 134; no. 16; pp. 6904 - 6907
Main Authors Xuan, Weimin, Zhang, Mengni, Liu, Yan, Chen, Zhijie, Cui, Yong
Format Journal Article
LanguageEnglish
Published WASHINGTON American Chemical Society 25.04.2012
Amer Chemical Soc
Subjects
adsorption
amino acids
Chemistry
Chemistry, Multidisciplinary
enantiomers
ligands
luminescence
Physical Sciences
Science & Technology
ASYMMETRIC CATALYSIS
SPACE
METAL-ORGANIC FRAMEWORKS
DNA
RESOLUTION
COMPLEXES
SALEN
GUEST
REACTIVITY
SUPRAMOLECULAR HOST
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Summary:The self-assembly of enantiopure pyridyl-functionalized metallosalan units affords a homochiral helicate cage, [Zn8 L 4Cl8], 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.
Bibliography:ObjectType-Article-1
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ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/ja212132r