Core-Shell and Yolk-Shell Covalent Organic Framework Nanostructures with Size-Selective Permeability

Song Wang; Yuhao Yang; Pingwei Liu; Ziyang Zhang; Chi Zhang; Ao Chen; Olayemi Oluwatosin Ajao; Bo-Geng Li; Pierre Braunstein; Wen-Jun Wang

Cell Reports Physical Science (Jun 2020)

Core-Shell and Yolk-Shell Covalent Organic Framework Nanostructures with Size-Selective Permeability

Song Wang,
Yuhao Yang,
Pingwei Liu,
Ziyang Zhang,
Chi Zhang,
Ao Chen,
Olayemi Oluwatosin Ajao,
Bo-Geng Li,
Pierre Braunstein,
Wen-Jun Wang

Affiliations

Song Wang: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
Yuhao Yang: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
Pingwei Liu: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China; Corresponding author
Ziyang Zhang: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
Chi Zhang: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
Ao Chen: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
Olayemi Oluwatosin Ajao: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Department of Chemical Engineering, Stanford University, Stanford, CA, USA
Bo-Geng Li: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
Pierre Braunstein: Université; de Strasbourg, CNRS, CHIMIE UMR 7177, Institute of Chemistry, 4 rue Blaise Pascal, 67081 Strasbourg Cedex, France
Wen-Jun Wang: State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Zhejiang University - Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China

Journal volume & issue: Vol. 1, no. 6
p. 100062

Abstract

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Summary: 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.

Published in Cell Reports Physical Science

ISSN: 2666-3864 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Science: Physics
Website: https://www.cell.com/cell-reports-physical-science

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