Direct measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces.
The layering of ionic liquids close to flat, charged interfaces has been identified previously through theoretical and some experimental measurements. Here we present evidence for oscillations in ion density (‘layering’) in a long chain ionic liquid (1-decyl-3-methylimidazolium bis(trifluoromethanes...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Royal Society of Chemistry
2016
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| _version_ | 1826277686223306752 |
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| author | Griffin, L Browning, K Clarke, S Smith, A Perkin, S Skoda, M Norman, S |
| author_facet | Griffin, L Browning, K Clarke, S Smith, A Perkin, S Skoda, M Norman, S |
| author_sort | Griffin, L |
| collection | OXFORD |
| description | The layering of ionic liquids close to flat, charged interfaces has been identified previously through theoretical and some experimental measurements. Here we present evidence for oscillations in ion density (‘layering’) in a long chain ionic liquid (1-decyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide) near the interface with mica using two complementary approaches. Neutron reflection at the ionic liquid-mica interface is used to detect structure at a single interface, and surface force balance (SFB) measurements carried out with the same ionic liquid reveal oscillatory density in the liquid confined between two mica sheets. Our findings imply the interfacial structure is not induced by confinement alone. Structural forces between two mica surfaces extend to approximately twice the distance of the density oscillations measured at a single interface and have similar period in both cases. |
| first_indexed | 2024-03-06T23:32:39Z |
| format | Journal article |
| id | oxford-uuid:6c978adb-c58f-4dbb-83f8-8a12a4652f8f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:32:39Z |
| publishDate | 2016 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | oxford-uuid:6c978adb-c58f-4dbb-83f8-8a12a4652f8f2022-03-26T19:11:54ZDirect measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6c978adb-c58f-4dbb-83f8-8a12a4652f8fEnglishSymplectic Elements at OxfordRoyal Society of Chemistry2016Griffin, LBrowning, KClarke, SSmith, APerkin, SSkoda, MNorman, SThe layering of ionic liquids close to flat, charged interfaces has been identified previously through theoretical and some experimental measurements. Here we present evidence for oscillations in ion density (‘layering’) in a long chain ionic liquid (1-decyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide) near the interface with mica using two complementary approaches. Neutron reflection at the ionic liquid-mica interface is used to detect structure at a single interface, and surface force balance (SFB) measurements carried out with the same ionic liquid reveal oscillatory density in the liquid confined between two mica sheets. Our findings imply the interfacial structure is not induced by confinement alone. Structural forces between two mica surfaces extend to approximately twice the distance of the density oscillations measured at a single interface and have similar period in both cases. |
| spellingShingle | Griffin, L Browning, K Clarke, S Smith, A Perkin, S Skoda, M Norman, S Direct measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces. |
| title | Direct measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces. |
| title_full | Direct measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces. |
| title_fullStr | Direct measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces. |
| title_full_unstemmed | Direct measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces. |
| title_short | Direct measurements of ionic liquid layering at a single mica-liquid interface and in nano-films between two mica-liquid interfaces. |
| title_sort | direct measurements of ionic liquid layering at a single mica liquid interface and in nano films between two mica liquid interfaces |
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