3D Cage COFs: A Dynamic Three-Dimensional Covalent Organic Framework with High-Connectivity Organic Cage Nodes

Qiang Zhu; Xue Wang; Rob Clowes; Peng Cui; Linjiang Chen; Marc a. Little; Andrew I. Cooper

doi:10.1021/jacs.0c07732

3D Cage COFs: A Dynamic Three-Dimensional Covalent Organic Framework with High-Connectivity Organic Cage Nodes

Qiang Zhu, Xue Wang, Rob Clowes, Peng Cui, Linjiang Chen^*, Marc a. Little^*, Andrew I. Cooper^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

230 Citations (Scopus)

Abstract

Three-dimensional (3D) covalent organic frameworks (COFs) are rare because there is a limited choice of organic building blocks that offer multiple reactive sites in a polyhedral geometry. Here, we synthesized an organic cage molecule (Cage-6-NH2) that was used as a triangular prism node to yield the first cage-based 3D COF, 3D-CageCOF-1. This COF adopts an unreported 2-fold interpenetrated acs topology and exhibits reversible dynamic behavior, switching between a small-pore (sp) structure and a large-pore (lp) structure. It also shows high CO2 uptake and captures water at low humidity (<40%). This demonstrates the potential for expanding the structural complexity of 3D COFs by using organic cages as the building units.

Original language	English
Pages (from-to)	16842-16848
Number of pages	7
Journal	Journal of the American Chemical Society
Volume	142
Issue number	39
DOIs	https://doi.org/10.1021/jacs.0c07732
Publication status	Published - 6 Sept 2020

Keywords

porous materials
covalent organic frameworks
computational modelling
chemical structure
group theory
mathematical methods
physical and chemical processes

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10.1021/jacs.0c07732Licence: CC BY

Cite this

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title = "3D Cage COFs: A Dynamic Three-Dimensional Covalent Organic Framework with High-Connectivity Organic Cage Nodes",

abstract = "Three-dimensional (3D) covalent organic frameworks (COFs) are rare because there is a limited choice of organic building blocks that offer multiple reactive sites in a polyhedral geometry. Here, we synthesized an organic cage molecule (Cage-6-NH2) that was used as a triangular prism node to yield the first cage-based 3D COF, 3D-CageCOF-1. This COF adopts an unreported 2-fold interpenetrated acs topology and exhibits reversible dynamic behavior, switching between a small-pore (sp) structure and a large-pore (lp) structure. It also shows high CO2 uptake and captures water at low humidity (<40%). This demonstrates the potential for expanding the structural complexity of 3D COFs by using organic cages as the building units.",

keywords = "porous materials, covalent organic frameworks, computational modelling, chemical structure, group theory, mathematical methods, physical and chemical processes",

author = "Qiang Zhu and Xue Wang and Rob Clowes and Peng Cui and Linjiang Chen and Little, {Marc a.} and Cooper, {Andrew I.}",

year = "2020",

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doi = "10.1021/jacs.0c07732",

language = "English",

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T1 - 3D Cage COFs: A Dynamic Three-Dimensional Covalent Organic Framework with High-Connectivity Organic Cage Nodes

AU - Zhu, Qiang

AU - Wang, Xue

AU - Clowes, Rob

AU - Cui, Peng

AU - Chen, Linjiang

AU - Little, Marc a.

AU - Cooper, Andrew I.

PY - 2020/9/6

Y1 - 2020/9/6

N2 - Three-dimensional (3D) covalent organic frameworks (COFs) are rare because there is a limited choice of organic building blocks that offer multiple reactive sites in a polyhedral geometry. Here, we synthesized an organic cage molecule (Cage-6-NH2) that was used as a triangular prism node to yield the first cage-based 3D COF, 3D-CageCOF-1. This COF adopts an unreported 2-fold interpenetrated acs topology and exhibits reversible dynamic behavior, switching between a small-pore (sp) structure and a large-pore (lp) structure. It also shows high CO2 uptake and captures water at low humidity (<40%). This demonstrates the potential for expanding the structural complexity of 3D COFs by using organic cages as the building units.

AB - Three-dimensional (3D) covalent organic frameworks (COFs) are rare because there is a limited choice of organic building blocks that offer multiple reactive sites in a polyhedral geometry. Here, we synthesized an organic cage molecule (Cage-6-NH2) that was used as a triangular prism node to yield the first cage-based 3D COF, 3D-CageCOF-1. This COF adopts an unreported 2-fold interpenetrated acs topology and exhibits reversible dynamic behavior, switching between a small-pore (sp) structure and a large-pore (lp) structure. It also shows high CO2 uptake and captures water at low humidity (<40%). This demonstrates the potential for expanding the structural complexity of 3D COFs by using organic cages as the building units.

KW - porous materials

KW - covalent organic frameworks

KW - computational modelling

KW - chemical structure

KW - group theory

KW - mathematical methods

KW - physical and chemical processes

U2 - 10.1021/jacs.0c07732

DO - 10.1021/jacs.0c07732

M3 - Article

SN - 0002-7863

VL - 142

SP - 16842

EP - 16848

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 39

ER -

3D Cage COFs: A Dynamic Three-Dimensional Covalent Organic Framework with High-Connectivity Organic Cage Nodes

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Keywords

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