Proton Conducting Membranes with Molecular Self Assemblies and Ionic Channels for Efficient Proton Conduction
Supramolecular assemblies are vital for biological systems. This phenomenon in artificial materials is directly related to their numerous properties and their performance. Here, a simple approach to supramolecular assemblies is employed to fabricate highly efficient proton conducting molecular wires...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
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| Series: | Membranes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0375/12/12/1174 |
| _version_ | 1797456393248178176 |
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| author | Avneesh Kumar Dong Wook Chang |
| author_facet | Avneesh Kumar Dong Wook Chang |
| author_sort | Avneesh Kumar |
| collection | DOAJ |
| description | Supramolecular assemblies are vital for biological systems. This phenomenon in artificial materials is directly related to their numerous properties and their performance. Here, a simple approach to supramolecular assemblies is employed to fabricate highly efficient proton conducting molecular wires for fuel cell applications. Small molecule-based molecular assembly leading to a discotic columnar architecture is achieved, simultaneously with proton conduction that can take place efficiently in the absence of water, which otherwise is very difficult to obtain in interconnected ionic channels. High boiling point proton facilitators are incorporated into these columns possessing central ionic channels, thereby increasing the conduction multifold. Larger and asymmetrical proton facilitators disintegrated the self-assembly, resulting in low proton conduction efficiency. The highest conductivity was found to be approaching 10<sup>−2</sup> S/cm for the molecular wires in an anhydrous state, which is ascribed to the continuous network of hydrogen bonds in which protons can hop between with a lower energy barrier. The molecular wires with ionic channels presented here have potential as an alternative to proton conductors operating under anhydrous conditions at both low and high temperatures. |
| first_indexed | 2024-03-09T16:06:56Z |
| format | Article |
| id | doaj.art-6d41c1a3785d4cdc980c0778f24ea0d6 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T16:06:56Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-6d41c1a3785d4cdc980c0778f24ea0d62023-11-24T16:34:43ZengMDPI AGMembranes2077-03752022-11-011212117410.3390/membranes12121174Proton Conducting Membranes with Molecular Self Assemblies and Ionic Channels for Efficient Proton ConductionAvneesh Kumar0Dong Wook Chang1Department of Industrial Chemistry, Pukyong National University, Busan 48513, Republic of KoreaDepartment of Industrial Chemistry, Pukyong National University, Busan 48513, Republic of KoreaSupramolecular assemblies are vital for biological systems. This phenomenon in artificial materials is directly related to their numerous properties and their performance. Here, a simple approach to supramolecular assemblies is employed to fabricate highly efficient proton conducting molecular wires for fuel cell applications. Small molecule-based molecular assembly leading to a discotic columnar architecture is achieved, simultaneously with proton conduction that can take place efficiently in the absence of water, which otherwise is very difficult to obtain in interconnected ionic channels. High boiling point proton facilitators are incorporated into these columns possessing central ionic channels, thereby increasing the conduction multifold. Larger and asymmetrical proton facilitators disintegrated the self-assembly, resulting in low proton conduction efficiency. The highest conductivity was found to be approaching 10<sup>−2</sup> S/cm for the molecular wires in an anhydrous state, which is ascribed to the continuous network of hydrogen bonds in which protons can hop between with a lower energy barrier. The molecular wires with ionic channels presented here have potential as an alternative to proton conductors operating under anhydrous conditions at both low and high temperatures.https://www.mdpi.com/2077-0375/12/12/1174supramolecular assembliesmolecular columnsmolecular wiresionic channelsproton conductorsfuel cells |
| spellingShingle | Avneesh Kumar Dong Wook Chang Proton Conducting Membranes with Molecular Self Assemblies and Ionic Channels for Efficient Proton Conduction Membranes supramolecular assemblies molecular columns molecular wires ionic channels proton conductors fuel cells |
| title | Proton Conducting Membranes with Molecular Self Assemblies and Ionic Channels for Efficient Proton Conduction |
| title_full | Proton Conducting Membranes with Molecular Self Assemblies and Ionic Channels for Efficient Proton Conduction |
| title_fullStr | Proton Conducting Membranes with Molecular Self Assemblies and Ionic Channels for Efficient Proton Conduction |
| title_full_unstemmed | Proton Conducting Membranes with Molecular Self Assemblies and Ionic Channels for Efficient Proton Conduction |
| title_short | Proton Conducting Membranes with Molecular Self Assemblies and Ionic Channels for Efficient Proton Conduction |
| title_sort | proton conducting membranes with molecular self assemblies and ionic channels for efficient proton conduction |
| topic | supramolecular assemblies molecular columns molecular wires ionic channels proton conductors fuel cells |
| url | https://www.mdpi.com/2077-0375/12/12/1174 |
| work_keys_str_mv | AT avneeshkumar protonconductingmembraneswithmolecularselfassembliesandionicchannelsforefficientprotonconduction AT dongwookchang protonconductingmembraneswithmolecularselfassembliesandionicchannelsforefficientprotonconduction |