AI Article Synopsis
- * Our new CFCOOH/CFCHNH protocol successfully produced 16 different high-quality single-crystal COFs that can be analyzed using regular laboratory x-ray diffraction, achieving high resolution (up to 0.79 angstroms).
- * The resulting structures show unique features like interpenetrated networks and allow detailed studies of how conformational isomers and host-guest interactions evolve at the atomic level.
Article Abstract
The imine-exchange strategy makes single-crystal growth of covalent organic frameworks (COFs) with large size (>15 microns) possible but is a time-consuming process (15 to 80 days) that has had limited success (six examples) and restricts structural characterization to synchrotron-radiation sources for x-ray diffraction studies. We developed a CFCOOH/CFCHNH protocol to harvest single-crystal COFs within 1 to 2 days with crystal sizes of up to 150 microns. The generality was exemplified by the feasible growth of 16 high-quality single-crystal COFs that were structurally determined by laboratory single-crystal x-ray diffraction with resolutions of up to 0.79 angstroms. The structures obtained included uncommon interpenetration of networks, and the details of the structural evolution of conformational isomers and host-guest interaction could be determined at the atomic level.
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| http://dx.doi.org/10.1126/science.adk8680 | DOI Listing |
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