期刊
CELL REPORTS PHYSICAL SCIENCE
卷 1, 期 6, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.xcrp.2020.100062
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资金
- National Natural Science Foundation of China [21938010, 51903218, 21420102008, 21536011, 2197080461]
- Zhejiang Provincial Natural Science Foundation of China [LR20B060002]
- Chinese State Key Laboratory of Chemical Engineering at Zhejiang University [SKLChE-19D02, SKL-ChE-19T03]
- Institute of Zhejiang University - Quzhou [IZQ2019-KJ-010, IZQ2019-KJ-015]
- Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang [2019R01006]
- National Key Research and Development Program of China [2016YFC0206003]
Many methods exist for the synthesis of covalent organic frameworks (COFs), but precise morphology control allowing the tailoring of core-shell and yolk-shell nanostructures has been elusive, mainly due to poor control of the reaction-diffusion processes. Herein, we propose the precise regulation of the COF generation and decomposition rates and their relationship with the diffusion rate of COF species during the synthesis, which enables a successful preparation of core-shell, yolk-shell, hollow-spherical, and multiple yolk-shell COF structures with tunable sizes ranging from 200 to 1,400 nm Formed COF structures can serve as nanoreactors or nanocontainers, with the shell layer providing molecular-size selectivity determined by the nanopore size demonstrated here using Suzuki coupling reactions with phenylboronic acid, which produce a size-cutoff efficiency for halogenated aromatics approaching 100%. The precise morphology design and control of COF particles and hybrids may help enhance application efficiencies and provide access to new functionalities for COF materials.
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