Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 44, Pages 15922-15927Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201909851
Keywords
covalent organic frameworks; molecular recognition; nanochannels; nanostructures; separation
Categories
Funding
- MOE Tier 1 grant [R-143-000-A71-114]
- NUS startup grant [R-143-000-A28-133]
- EPSRC [EP/S015868/1]
- Materials Chemistry Consortium [EP/P020194]
- Deutsche Forschungsgemeinschaft [HE 3543/30-1, SPP 1928]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available