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The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks

The proton conductivity of two coordination networks, [Mg(H(2)O)(2)(H(3)L)]·H(2)O and [Pb(2)(HL)]·H(2)O (H(5)L = (H(2)O(3)PCH(2))(2)-NCH(2)-C(6)H(4)-SO(3)H), is investigated by AC impedance spectroscopy. Both materials contain the same phosphonato-sulfonate linker molecule, but have clearly differen...

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Autores principales: Javed, Ali, Steinke, Felix, Wöhlbrandt, Stephan, Bunzen, Hana, Stock, Norbert, Tiemann, Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086504/
https://www.ncbi.nlm.nih.gov/pubmed/35601537
http://dx.doi.org/10.3762/bjnano.13.36
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author Javed, Ali
Steinke, Felix
Wöhlbrandt, Stephan
Bunzen, Hana
Stock, Norbert
Tiemann, Michael
author_facet Javed, Ali
Steinke, Felix
Wöhlbrandt, Stephan
Bunzen, Hana
Stock, Norbert
Tiemann, Michael
author_sort Javed, Ali
collection PubMed
description The proton conductivity of two coordination networks, [Mg(H(2)O)(2)(H(3)L)]·H(2)O and [Pb(2)(HL)]·H(2)O (H(5)L = (H(2)O(3)PCH(2))(2)-NCH(2)-C(6)H(4)-SO(3)H), is investigated by AC impedance spectroscopy. Both materials contain the same phosphonato-sulfonate linker molecule, but have clearly different crystal structures, which has a strong effect on proton conductivity. In the Mg-based coordination network, dangling sulfonate groups are part of an extended hydrogen bonding network, facilitating a “proton hopping” with low activation energy; the material shows a moderate proton conductivity. In the Pb-based metal-organic framework, in contrast, no extended hydrogen bonding occurs, as the sulfonate groups coordinate to Pb(2+), without forming hydrogen bonds; the proton conductivity is much lower in this material.
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spelling pubmed-90865042022-05-19 The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks Javed, Ali Steinke, Felix Wöhlbrandt, Stephan Bunzen, Hana Stock, Norbert Tiemann, Michael Beilstein J Nanotechnol Full Research Paper The proton conductivity of two coordination networks, [Mg(H(2)O)(2)(H(3)L)]·H(2)O and [Pb(2)(HL)]·H(2)O (H(5)L = (H(2)O(3)PCH(2))(2)-NCH(2)-C(6)H(4)-SO(3)H), is investigated by AC impedance spectroscopy. Both materials contain the same phosphonato-sulfonate linker molecule, but have clearly different crystal structures, which has a strong effect on proton conductivity. In the Mg-based coordination network, dangling sulfonate groups are part of an extended hydrogen bonding network, facilitating a “proton hopping” with low activation energy; the material shows a moderate proton conductivity. In the Pb-based metal-organic framework, in contrast, no extended hydrogen bonding occurs, as the sulfonate groups coordinate to Pb(2+), without forming hydrogen bonds; the proton conductivity is much lower in this material. Beilstein-Institut 2022-05-04 /pmc/articles/PMC9086504/ /pubmed/35601537 http://dx.doi.org/10.3762/bjnano.13.36 Text en Copyright © 2022, Javed et al. https://creativecommons.org/licenses/by/4.0/This is an open access article licensed under the terms of the Beilstein-Institut Open Access License Agreement (https://www.beilstein-journals.org/bjnano/terms/terms), which is identical to the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0 (https://creativecommons.org/licenses/by/4.0/) ). The reuse of material under this license requires that the author(s), source and license are credited. Third-party material in this article could be subject to other licenses (typically indicated in the credit line), and in this case, users are required to obtain permission from the license holder to reuse the material.
spellingShingle Full Research Paper
Javed, Ali
Steinke, Felix
Wöhlbrandt, Stephan
Bunzen, Hana
Stock, Norbert
Tiemann, Michael
The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks
title The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks
title_full The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks
title_fullStr The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks
title_full_unstemmed The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks
title_short The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks
title_sort role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086504/
https://www.ncbi.nlm.nih.gov/pubmed/35601537
http://dx.doi.org/10.3762/bjnano.13.36
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