Reversible Polycondensation-Termination Growth of Covalent-Organic-Framework Spheres, Fibers, and Films
Name
ReversiblePolycondensation-TerminationGrowthofCovalent-Organic-FrameworkSpheresFibersandFilms-1.pdf
Description
Accepted version
Size
3.06 MB
Format
Adobe PDF
Checksum (MD5)
c5169b19961ad346579d3436bd807e1f
Author(s)
Wang, Song
Zhang, Ziyang
Zhang, Haomiao
Rajan, Ananth Govind
Xu, Nan
Yang, Yuhao
Zeng, Yuwen
Liu, Pingwei
Zhang, Xiaohu
Mao, Qiying
Date Issued
2019
Journal
Matter
Publisher
Elsevier BV
Version
Author's final manuscript
Abstract
© 2019 Elsevier Inc. 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.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.MATT.2019.08.019
