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Three-dimensional protonic conductivity in porous organic cage solids

Ming Liu, Linjiang Chen, Scott Lewis, Samantha Y. Chong, Marc A. Little, Tom Hasell, Iain Aldous, Craig M. Brown, Martin W. Smith, Carole A. Morrison, Laurence J. Hardwick, Andrew I. Cooper

Nature Communications, Volume: 7, Issue: 1

Swansea University Author: Iain Aldous

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DOI (Published version): 10.1038/ncomms12750

Abstract

Proton conduction is a fundamental process in biology and in devices such as proton exchange membrane fuel cells. To maximize proton conduction, three-dimensional conduction pathways are preferred over one-dimensional pathways, which prevent conduction in two dimensions. Many crystalline porous soli...

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Published in: Nature Communications
ISSN: 2041-1723
Published: Springer Science and Business Media LLC 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa51334
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first_indexed 2019-08-09T16:32:04Z
last_indexed 2021-09-25T03:11:14Z
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spelling 2021-09-24T15:36:08.0962937 v2 51334 2019-08-06 Three-dimensional protonic conductivity in porous organic cage solids 87867d675f1cd66804b1c6c2626cac24 Iain Aldous Iain Aldous true false 2019-08-06 CHEG Proton conduction is a fundamental process in biology and in devices such as proton exchange membrane fuel cells. To maximize proton conduction, three-dimensional conduction pathways are preferred over one-dimensional pathways, which prevent conduction in two dimensions. Many crystalline porous solids to date show one-dimensional proton conduction. Here we report porous molecular cages with proton conductivities (up to 10−3 S cm−1 at high relative humidity) that compete with extended metal-organic frameworks. The structure of the organic cage imposes a conduction pathway that is necessarily three-dimensional. The cage molecules also promote proton transfer by confining the water molecules while being sufficiently flexible to allow hydrogen bond reorganization. The proton conduction is explained at the molecular level through a combination of proton conductivity measurements, crystallography, molecular simulations and quasi-elastic neutron scattering. These results provide a starting point for high-temperature, anhydrous proton conductors through inclusion of guests other than water in the cage pores. Journal Article Nature Communications 7 1 Springer Science and Business Media LLC 2041-1723 Organic molecules in materials science, Porous materials, Theory computation 1 11 2016 2016-11-01 10.1038/ncomms12750 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2021-09-24T15:36:08.0962937 2019-08-06T17:49:35.9636796 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Ming Liu 1 Linjiang Chen 2 Scott Lewis 3 Samantha Y. Chong 4 Marc A. Little 5 Tom Hasell 6 Iain Aldous 7 Craig M. Brown 8 Martin W. Smith 9 Carole A. Morrison 10 Laurence J. Hardwick 11 Andrew I. Cooper 12 0051334-07082019115421.pdf liu2019(2).pdf 2019-08-07T11:54:21.5600000 Output 1627165 application/pdf Version of Record true ©The Author(s) 2016. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 4.0 (CC BY) License true eng http://creativecommons.org/licenses/by/4.0/
title Three-dimensional protonic conductivity in porous organic cage solids
spellingShingle Three-dimensional protonic conductivity in porous organic cage solids
Iain Aldous
title_short Three-dimensional protonic conductivity in porous organic cage solids
title_full Three-dimensional protonic conductivity in porous organic cage solids
title_fullStr Three-dimensional protonic conductivity in porous organic cage solids
title_full_unstemmed Three-dimensional protonic conductivity in porous organic cage solids
title_sort Three-dimensional protonic conductivity in porous organic cage solids
author_id_str_mv 87867d675f1cd66804b1c6c2626cac24
author_id_fullname_str_mv 87867d675f1cd66804b1c6c2626cac24_***_Iain Aldous
author Iain Aldous
author2 Ming Liu
Linjiang Chen
Scott Lewis
Samantha Y. Chong
Marc A. Little
Tom Hasell
Iain Aldous
Craig M. Brown
Martin W. Smith
Carole A. Morrison
Laurence J. Hardwick
Andrew I. Cooper
format Journal article
container_title Nature Communications
container_volume 7
container_issue 1
publishDate 2016
institution Swansea University
issn 2041-1723
doi_str_mv 10.1038/ncomms12750
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemistry{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemistry
document_store_str 1
active_str 0
description Proton conduction is a fundamental process in biology and in devices such as proton exchange membrane fuel cells. To maximize proton conduction, three-dimensional conduction pathways are preferred over one-dimensional pathways, which prevent conduction in two dimensions. Many crystalline porous solids to date show one-dimensional proton conduction. Here we report porous molecular cages with proton conductivities (up to 10−3 S cm−1 at high relative humidity) that compete with extended metal-organic frameworks. The structure of the organic cage imposes a conduction pathway that is necessarily three-dimensional. The cage molecules also promote proton transfer by confining the water molecules while being sufficiently flexible to allow hydrogen bond reorganization. The proton conduction is explained at the molecular level through a combination of proton conductivity measurements, crystallography, molecular simulations and quasi-elastic neutron scattering. These results provide a starting point for high-temperature, anhydrous proton conductors through inclusion of guests other than water in the cage pores.
published_date 2016-11-01T04:03:11Z
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score 11.013799

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