High-Precision Size Recognition and Separation in Synthetic 1D Nanochannels

Ping Wang, Xinyi Chen, Qiuhong Jiang, Matthew Addicoat, Ning Huang, Sasanka Dalapati, Thomas Heine, Fengwei Huo, Donglin Jiang

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Covalent organic frameworks (COFs) allow elaborate manufacture of ordered one-dimensional channels in the crystal. We defined a superlattice of COFs by engineering channels with a persistent triangular shape and discrete pore size. We observed a size-recognition regime that is different from the characteristic adsorption of COFs, whereby pore windows and walls were cooperative so that triangular apertures sorted molecules of one-atom difference and notch nanogrooves confined them into single-file molecular chains. The recognition and confinement were accurately described by sensitive spectroscopy and femtosecond dynamic simulations. The resulting COFs enabled instantaneous separation of mixtures at ambient temperature and pressure. This study offers an approach to merge precise recognition, selective transport, and instant separation in synthetic 1D channels.

Original languageEnglish
Pages (from-to)15922-15927
Number of pages6
JournalAngewandte Chemie - International Edition
Volume58
Issue number44
DOIs
Publication statusPublished - 2019 Oct 28

Bibliographical note

Funding Information:
D.J. acknowledges an MOE Tier 1 grant (R-143-000-A71-114) and NUS startup grant (R-143-000-A28-133). M.A. acknowledges support from the EPSRC (EP/S015868/1) and HPC resources of T.H. through the Materials Chemistry Consortium (EP/P020194). T.H. acknowledges financial support by the Deutsche Forschungsgemeinschaft, SPP 1928 COORNETs, under contract number HE 3543/30-1.

Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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