Volume 57, Issue 23 pp. 6873-6877
Communication

Ultrathin Chiral Metal–Organic-Framework Nanosheets for Efficient Enantioselective Separation

Jun Guo

Jun Guo

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

Center for Nanochemistry, Peking University, Beijing, 100871 China

University of Chinese Academy of Sciences, Beijing, 100049 China

These authors contributed equally to this work.

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Yin Zhang

Yin Zhang

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

Center for Nanochemistry, Peking University, Beijing, 100871 China

University of Chinese Academy of Sciences, Beijing, 100049 China

These authors contributed equally to this work.

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Yanfei Zhu

Yanfei Zhu

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Chang Long

Chang Long

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

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Dr. Meiting Zhao

Dr. Meiting Zhao

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

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Prof. Meng He

Prof. Meng He

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Xiaofei Zhang

Xiaofei Zhang

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

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Jiawei Lv

Jiawei Lv

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

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Prof. Bing Han

Prof. Bing Han

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

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Prof. Zhiyong Tang

Corresponding Author

Prof. Zhiyong Tang

CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190 China

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First published: 17 April 2018
Citations: 136

Graphical Abstract

Think thin: Ultrathin chiral metal–organic framework (CMOF) nanosheets of only few layers in thickness are prepared for the first time by a biomimetic strategy. Benefiting from the much larger number of exposed chiral sites, ultrathin CMOF nanosheets exhibit far superior enantioselectivity in chiral separation than their bulk counterparts.

Abstract

Chiral metal–organic framework (CMOF) nanosheets only a few layers thick remain a virgin land waiting for exploration. Herein, the first examples of ultrathin CMOF nanosheets are prepared by the confinement growth of two-dimensional (2D) chiral layers, which are assembled by helical metal–organic chains within microemulsion. This convenient and easily scaled up inverse microemulsion method gives a series of 2D CMOF nanosheets composed of variable metal nodes or chiral ligands. More significantly, thanks to the exceptionally large number of chiral sites exposed on surfaces, the as-obtained CMOF nanosheets exhibit much higher enantioselectivity in chiral separation compared with their bulk counterparts.

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