Dendritic phytic acid as a proton-conducting crosslinker for improved thermal stability and proton conductivity
Abstract There is growing interest in materials that exhibit enhanced proton conductivity at elevated temperatures without the need for humidification. Here, we develop a dendritic proton-conducting dopant for proton exchange membranes based on phytic acid (PhA) salts. PhA, which contains six phosph...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-02-01
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| Series: | Communications Materials |
| Online Access: | https://doi.org/10.1038/s43246-025-00748-9 |
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| author | Keiichiro Maegawa Vellaichamy Joseph Arthisree Devendran Hassan Alipour Krzysztof Łyczko Yaroslav Korol Hanna Lewandowska-Siwkiewicz Atsushi Nagai |
| author_facet | Keiichiro Maegawa Vellaichamy Joseph Arthisree Devendran Hassan Alipour Krzysztof Łyczko Yaroslav Korol Hanna Lewandowska-Siwkiewicz Atsushi Nagai |
| author_sort | Keiichiro Maegawa |
| collection | DOAJ |
| description | Abstract There is growing interest in materials that exhibit enhanced proton conductivity at elevated temperatures without the need for humidification. Here, we develop a dendritic proton-conducting dopant for proton exchange membranes based on phytic acid (PhA) salts. PhA, which contains six phosphate groups capable of facilitating proton exchange, interacts with 4-dimethylaminopyridine (DMAP). DMAP serves as a strong electron donor, making it highly reactive with PhA. In this endeavor, cellulose sulfonic acid was selected as the base proton exchange membrane. Notably, the dimethylamino group of DMAP on the surface of DMAP-PhA acts as a basic site, enabling acid-base interactions with the sulfonic acid groups of cellulose sulfonic acid. As a result, DMAP-PhA functions as a proton-conducting crosslinker, significantly improving the thermal stability of the composites and increasing proton conductivity by enhancing the degree of proton dissociation at each interaction site. |
| format | Article |
| id | doaj-art-2a1b48c3ec9e4605925b5fe40c3fa301 |
| institution | Kabale University |
| issn | 2662-4443 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Materials |
| spelling | doaj-art-2a1b48c3ec9e4605925b5fe40c3fa3012025-02-09T12:47:10ZengNature PortfolioCommunications Materials2662-44432025-02-01611710.1038/s43246-025-00748-9Dendritic phytic acid as a proton-conducting crosslinker for improved thermal stability and proton conductivityKeiichiro Maegawa0Vellaichamy Joseph1Arthisree Devendran2Hassan Alipour3Krzysztof Łyczko4Yaroslav Korol5Hanna Lewandowska-Siwkiewicz6Atsushi Nagai7Next-Generation Energy Systems group, Centre of Excellence ENSEMBLE3Next-Generation Energy Systems group, Centre of Excellence ENSEMBLE3Next-Generation Energy Systems group, Centre of Excellence ENSEMBLE3Next-Generation Energy Systems group, Centre of Excellence ENSEMBLE3Institute of Nuclear Chemistry and TechnologyCentre of Excellence ENSEMBLE3Centre of Excellence ENSEMBLE3Next-Generation Energy Systems group, Centre of Excellence ENSEMBLE3Abstract There is growing interest in materials that exhibit enhanced proton conductivity at elevated temperatures without the need for humidification. Here, we develop a dendritic proton-conducting dopant for proton exchange membranes based on phytic acid (PhA) salts. PhA, which contains six phosphate groups capable of facilitating proton exchange, interacts with 4-dimethylaminopyridine (DMAP). DMAP serves as a strong electron donor, making it highly reactive with PhA. In this endeavor, cellulose sulfonic acid was selected as the base proton exchange membrane. Notably, the dimethylamino group of DMAP on the surface of DMAP-PhA acts as a basic site, enabling acid-base interactions with the sulfonic acid groups of cellulose sulfonic acid. As a result, DMAP-PhA functions as a proton-conducting crosslinker, significantly improving the thermal stability of the composites and increasing proton conductivity by enhancing the degree of proton dissociation at each interaction site.https://doi.org/10.1038/s43246-025-00748-9 |
| spellingShingle | Keiichiro Maegawa Vellaichamy Joseph Arthisree Devendran Hassan Alipour Krzysztof Łyczko Yaroslav Korol Hanna Lewandowska-Siwkiewicz Atsushi Nagai Dendritic phytic acid as a proton-conducting crosslinker for improved thermal stability and proton conductivity Communications Materials |
| title | Dendritic phytic acid as a proton-conducting crosslinker for improved thermal stability and proton conductivity |
| title_full | Dendritic phytic acid as a proton-conducting crosslinker for improved thermal stability and proton conductivity |
| title_fullStr | Dendritic phytic acid as a proton-conducting crosslinker for improved thermal stability and proton conductivity |
| title_full_unstemmed | Dendritic phytic acid as a proton-conducting crosslinker for improved thermal stability and proton conductivity |
| title_short | Dendritic phytic acid as a proton-conducting crosslinker for improved thermal stability and proton conductivity |
| title_sort | dendritic phytic acid as a proton conducting crosslinker for improved thermal stability and proton conductivity |
| url | https://doi.org/10.1038/s43246-025-00748-9 |
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