Issue 46, 2021

Topology modulation of 2D covalent organic frameworks via a “two-in-one” strategy

Abstract

Topology modulation of covalent organic frameworks (COFs) still remains barely explored, probably due to the lack of appropriate building blocks. A “two-in-one” strategy applies bifunctional monomers to endow ideal stoichiometry and has recently demonstrated great potential in the facile preparation of highly crystalline two-dimensional (2D) COFs with different topologies. Herein, we employ this approach to modulate the topology of 2D COFs by varying the solvents or the monomer concentrations. To our delight, 2D COFs featuring a Kagome (kgm) lattice with both hexagonal and triangular dual pores (DP) or featuring a rhombic square (sql) single pore (SP) structure can be selectively formed by varying the solvents. Furthermore, adjusting the monomer concentrations also successfully tuned the topology of the COFs. In addition, the highly porous dual-pore COF showed potential applications for controlled drug delivery.

Graphical abstract: Topology modulation of 2D covalent organic frameworks via a “two-in-one” strategy

Supplementary files

Article information

Article type
Communication
Submitted
01 Gwen. 2021
Accepted
30 Here 2021
First published
01 Du 2021

Nanoscale, 2021,13, 19385-19390

Topology modulation of 2D covalent organic frameworks via a “two-in-one” strategy

Z. Zhao, J. Zhao, S. Zhang, G. Zhang, W. Chen, Z. Yang, T. Zhang and L. Chen, Nanoscale, 2021, 13, 19385 DOI: 10.1039/D1NR05758H

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