Please use this identifier to cite or link to this item:
doi:10.22028/D291-42470
Title: | Room temperature ionic liquids with two symmetric ions |
Author(s): | Rauber, Daniel Philippi, Frederik Schroeder, Daniel Morgenstern, Bernd White, Andrew J. P. Jochum, Marlon Welton, Tom Kay, Christopher W. M. |
Language: | English |
Title: | Chemical science |
Volume: | 14 |
Issue: | 37 |
Pages: | 10340-10346 |
Publisher/Platform: | RSC |
Year of Publication: | 2023 |
DDC notations: | 660 Chemical engineering |
Publikation type: | Journal Article |
Abstract: | Room temperature ionic liquids typically contain asymmetric organic cations. The asymmetry is thought to enhance disorder, thereby providing an entropic counter-balance to the strong, enthalpic, ionic interactions, and leading, therefore, to lower melting points. Unfortunately, the synthesis and purification of such asymmetric cations is typically more demanding. Here we introduce novel room temperature ionic liquids in which both cation and anion are formally symmetric. The chemical basis for this unprecedented behaviour is the incorporation of ether-containing side chains – which increase the configurational entropy – in the cation. Molecular dynamics simulations indicate that the ether-containing side chains transiently sample curled configurations. Our results contradict the long-standing paradigm that at least one asymmetric ion is required for ionic liquids to be molten at room temperature, and hence open up new and simpler design pathways for these remarkable materials. |
DOI of the first publication: | 10.1039/D3SC03240J |
URL of the first publication: | https://pubs.rsc.org/en/content/articlelanding/2023/sc/d3sc03240j |
Link to this record: | urn:nbn:de:bsz:291--ds-424707 hdl:20.500.11880/38117 http://dx.doi.org/10.22028/D291-42470 |
ISSN: | 2041-6520 2041-6539 |
Date of registration: | 29-Jul-2024 |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Chemie |
Professorship: | NT - Prof. Dr. Guido Kickelbick |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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d3sc03240j.pdf | 1,02 MB | Adobe PDF | View/Open |
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