Proton transport in crystalline, porous covalent organic frameworks: A NMR study

Haijin Zhu; Tiantian Xu; Long Chen; Maria Forsyth

doi:10.1039/d0ta06927b

Proton transport in crystalline, porous covalent organic frameworks: A NMR study

Haijin Zhu^*, Tiantian Xu, Long Chen, Maria Forsyth

^*Corresponding author for this work

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

2 Scopus citations

Abstract

Herein, we demonstrate proton transport in two crystalline covalent organic frameworks with different surface chemistries-A hydrocarbon and a carbon surface, mainly using NMR techniques. While proton diffusion of the immobilized H2O layer in direct contact with the hydrocarbon surfaces is slower, the diffusion of H2O molecules which are not directly in contact with the surfaces is enhanced, resulting in a diffusion coefficient significantly higher than that of the bulk water. This study also highlights the importance of the persistence length of the crystalline mesopores in COFs, which must be sufficiently long, and percolate at a macroscopic level in order to promote long range proton transport.

Original language	English
Pages (from-to)	20939-20945
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	8
Issue number	40
DOIs	https://doi.org/10.1039/d0ta06927b
State	Published - 28 Oct 2020
Externally published	Yes

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title = "Proton transport in crystalline, porous covalent organic frameworks: A NMR study",

abstract = "Herein, we demonstrate proton transport in two crystalline covalent organic frameworks with different surface chemistries-A hydrocarbon and a carbon surface, mainly using NMR techniques. While proton diffusion of the immobilized H2O layer in direct contact with the hydrocarbon surfaces is slower, the diffusion of H2O molecules which are not directly in contact with the surfaces is enhanced, resulting in a diffusion coefficient significantly higher than that of the bulk water. This study also highlights the importance of the persistence length of the crystalline mesopores in COFs, which must be sufficiently long, and percolate at a macroscopic level in order to promote long range proton transport.",

author = "Haijin Zhu and Tiantian Xu and Long Chen and Maria Forsyth",

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T1 - Proton transport in crystalline, porous covalent organic frameworks

T2 - A NMR study

AU - Zhu, Haijin

AU - Xu, Tiantian

AU - Chen, Long

AU - Forsyth, Maria

PY - 2020/10/28

Y1 - 2020/10/28

N2 - Herein, we demonstrate proton transport in two crystalline covalent organic frameworks with different surface chemistries-A hydrocarbon and a carbon surface, mainly using NMR techniques. While proton diffusion of the immobilized H2O layer in direct contact with the hydrocarbon surfaces is slower, the diffusion of H2O molecules which are not directly in contact with the surfaces is enhanced, resulting in a diffusion coefficient significantly higher than that of the bulk water. This study also highlights the importance of the persistence length of the crystalline mesopores in COFs, which must be sufficiently long, and percolate at a macroscopic level in order to promote long range proton transport.

AB - Herein, we demonstrate proton transport in two crystalline covalent organic frameworks with different surface chemistries-A hydrocarbon and a carbon surface, mainly using NMR techniques. While proton diffusion of the immobilized H2O layer in direct contact with the hydrocarbon surfaces is slower, the diffusion of H2O molecules which are not directly in contact with the surfaces is enhanced, resulting in a diffusion coefficient significantly higher than that of the bulk water. This study also highlights the importance of the persistence length of the crystalline mesopores in COFs, which must be sufficiently long, and percolate at a macroscopic level in order to promote long range proton transport.

UR - http://www.scopus.com/inward/record.url?scp=85094208980&partnerID=8YFLogxK

U2 - 10.1039/d0ta06927b

DO - 10.1039/d0ta06927b

M3 - 文章

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SN - 2050-7488

VL - 8

SP - 20939

EP - 20945

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 40

ER -

Proton transport in crystalline, porous covalent organic frameworks: A NMR study

Abstract

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