Nonmetal organic frameworks exhibit high proton conductivity
Nonmetal organic frameworks exhibit high proton conductivity
Porous materials, such as metal–organic frameworks (MOFs) and porous organic salts, are promising materials for proton conduction. Recently, we developed a new subclass of porous materials, isoreticular nonmetal organic frameworks (N-MOFs), which can be designed using crystal structure prediction (CSP). Here, two porous, isostructural, and water-stable halide N-MOFs were prepared and found to show good proton conductivity of up to 1.1 × 10–1 S cm–1 at 70 °C and 90% relative humidity. Changing the halides in these N-MOF materials affects the resulting proton conductivity, as observed in previous studies involving MOFs and lead halides. Although this is the first study of proton conductivity in N-MOFs, the bromide salt, TTBT.Br, shows a higher conductivity than most polycrystalline MOFs and porous organic salts, approaching that of Nafion.
crystal structure, materials, metal organic frameworks, proton conductivity, salts
15429-15434
O'Shaughnessy, Megan
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Lim, Jungwoo
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Glover, Joseph
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Neale, Alex R.
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Day, Graeme M.
e3be79ba-ad12-4461-b735-74d5c4355636
Hardwick, Laurence J.
acf1eb1b-b21c-487b-bbdf-e956b75c02ed
Cooper, Andrew I.
77b6d935-b186-4ec8-bcde-1bbe0f9ea5af
7 May 2025
O'Shaughnessy, Megan
98cdcc69-45f1-49a7-bc8a-fd042828bedf
Lim, Jungwoo
4a8a6eae-b207-487b-9630-45e872c66927
Glover, Joseph
27469618-4dd0-44c1-8267-ff955bce66b7
Neale, Alex R.
2fa48ff3-54c1-42b8-a11e-499ea8c92f77
Day, Graeme M.
e3be79ba-ad12-4461-b735-74d5c4355636
Hardwick, Laurence J.
acf1eb1b-b21c-487b-bbdf-e956b75c02ed
Cooper, Andrew I.
77b6d935-b186-4ec8-bcde-1bbe0f9ea5af
O'Shaughnessy, Megan, Lim, Jungwoo, Glover, Joseph, Neale, Alex R., Day, Graeme M., Hardwick, Laurence J. and Cooper, Andrew I.
(2025)
Nonmetal organic frameworks exhibit high proton conductivity.
Journal of the American Chemical Society, 147 (18), .
(doi:10.1021/jacs.5c01336.).
Abstract
Porous materials, such as metal–organic frameworks (MOFs) and porous organic salts, are promising materials for proton conduction. Recently, we developed a new subclass of porous materials, isoreticular nonmetal organic frameworks (N-MOFs), which can be designed using crystal structure prediction (CSP). Here, two porous, isostructural, and water-stable halide N-MOFs were prepared and found to show good proton conductivity of up to 1.1 × 10–1 S cm–1 at 70 °C and 90% relative humidity. Changing the halides in these N-MOF materials affects the resulting proton conductivity, as observed in previous studies involving MOFs and lead halides. Although this is the first study of proton conductivity in N-MOFs, the bromide salt, TTBT.Br, shows a higher conductivity than most polycrystalline MOFs and porous organic salts, approaching that of Nafion.
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o-shaughnessy-et-al-2025-nonmetal-organic-frameworks-exhibit-high-proton-conductivity (1)
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Accepted/In Press date: 27 March 2025
e-pub ahead of print date: 24 April 2025
Published date: 7 May 2025
Keywords:
crystal structure, materials, metal organic frameworks, proton conductivity, salts
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Local EPrints ID: 503973
URI: http://eprints.soton.ac.uk/id/eprint/503973
ISSN: 0002-7863
PURE UUID: 19f250eb-1901-41cc-a8df-d530f62587fb
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Date deposited: 19 Aug 2025 17:05
Last modified: 22 Aug 2025 02:31
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Contributors
Author:
Megan O'Shaughnessy
Author:
Jungwoo Lim
Author:
Joseph Glover
Author:
Alex R. Neale
Author:
Laurence J. Hardwick
Author:
Andrew I. Cooper
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