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Electrowetting of ionic liquids

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dc.contributor.authorMillefiorni, S.
dc.contributor.authorTkaczyk, A.H.
dc.contributor.authorSedev, R.V.
dc.contributor.authorEfthimiadis, J.
dc.contributor.authorRalston, J.
dc.date.issued2006
dc.description.abstractWe have successfully demonstrated that imidazolium- and pyrrolidinium-based commercial room-temperature ionic liquids can electrowet (with a dc voltage) a smooth fluoropolymer (Teflon AF1600) surface. Qualitatively, the process is analogous to the electrowetting of aqueous electrolyte solutions: the contact angle versus voltage curve has a parabolic shape which saturates at larger voltages (positive or negative). On the other hand we observed several peculiarities: (i) the efficiency is significantly lower (by about an order of magnitude); (ii) the influence of the bulky cation is larger and the importance of the smaller anion is lesser, especially with respect to electrowetting saturation; (iii) there is an asymmetry in the saturation contact angles found for positive and negative voltages. The asymmetry may be correlated with the cation-anion asymmetry of the ionic liquids. The low efficiency may be caused by the presence of water and other impurities in these commercial materials.
dc.identifier.citationJournal of the American Chemical Society, 2006; 128(9):3098-3101
dc.identifier.doi10.1021/ja057606d
dc.identifier.issn0002-7863
dc.identifier.issn1520-5126
dc.identifier.urihttps://hdl.handle.net/1959.8/43971
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.rightsCopyright status unknown
dc.source.urihttps://doi.org/10.1021/ja057606d
dc.subjectIons
dc.subjectImidazolines
dc.subjectPyrrolidines
dc.subjectElectrochemistry
dc.subjectWettability
dc.titleElectrowetting of ionic liquids
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9915911868601831

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