Abstract
Summary Covalent organic frameworks (COFs) possessing well-defined nanopore structures can precisely control the transport of molecules through them, thereby promising applications in separations, gas storage, sensing, and catalysis. However, such applications are compromised by the low crystallinity and, thus, poor morphology control of COFs. Here, we introduce a reversible polycondensation-termination (RPT) approach. By simultaneously introducing two monofunctional competitors into reaction systems, the RPT approach selectively generates spherical, fibrous, and membranous COFs with highly ordered structures up to centimeter dimensions. The monofunctional competitors can reversibly terminate/activate the polycondensation reaction between monomers during the COF synthesis by dynamically combining with reactive functional groups of monomers. As a proof of concept, we applied the COF film to microreactions with high catalytic activities as well as rapid vapor sensor with repeatable color change.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.