uu.seUppsala universitets publikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Electro-responsivity of ionic liquid boundary layers in a polar solvent revealed by neutron reflectance
KTH Royal Inst Technol, Dept Chem, Surface & Corros Sci, Stockholm, Sweden.
KTH Royal Inst Technol, Dept Machine Design, Syst & Component Design, Stockholm, Sweden.
KTH Royal Inst Technol, Dept Chem, Surface & Corros Sci, Stockholm, Sweden.
KTH Royal Inst Technol, Dept Machine Design, Syst & Component Design, Stockholm, Sweden.
Visa övriga samt affilieringar
2018 (Engelska)Ingår i: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 148, nr 19, artikel-id 193806Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Using neutron reflectivity, the electro-responsive structuring of the non-halogenated ionic liquid (IL) trihexyl(tetradecyl)phosphonium-bis(mandelato)borate, [ P-6,P-6,P-6,P-14][BMB], has been studied at a gold electrode surface in a polar solvent. For a 20% w/w IL mixture, contrast matched to the gold surface, distinct Kiessig fringes were observed for all potentials studied, indicative of a boundary layer of different composition to that of the bulk IL-solvent mixture. With applied potential, the amplitudes of the fringes from the gold-boundary layer interface varied systematically. These changes are attributable to the differing ratios of cations and anions in the boundary layer, leading to a greater or diminished contrast with the gold electrode, depending on the individual ion scattering length densities. Such electro-responsive changes were also evident in the reflectivities measured for the pure IL and a less concentrated (5% w/w) IL-solvent mixture at the same applied potentials, but gave rise to less pronounced changes. These measurements, therefore, demonstrate the enhanced sensitivity achieved by contrast matching the bulk solution and that the structure of the IL boundary layers formed in mixtures is strongly influenced by the bulk concentration. Together these results represent an important step in characterising IL boundary layers in IL-solvent mixtures and provide clear evidence of electro-responsive structuring of IL ions in their solutions with applied potential.

Ort, förlag, år, upplaga, sidor
AMER INST PHYSICS , 2018. Vol. 148, nr 19, artikel-id 193806
Nationell ämneskategori
Fysikalisk kemi
Identifikatorer
URN: urn:nbn:se:uu:diva-357749DOI: 10.1063/1.5001551ISI: 000432853800010OAI: oai:DiVA.org:uu-357749DiVA, id: diva2:1241140
Forskningsfinansiär
Knut och Alice Wallenbergs Stiftelse, KAW2012.0078Vetenskapsrådet, 20144694Tillgänglig från: 2018-08-22 Skapad: 2018-08-22 Senast uppdaterad: 2018-08-22Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Personposter BETA

Pálsson, Gunnar K.Vorobiev, Alexei

Sök vidare i DiVA

Av författaren/redaktören
Pálsson, Gunnar K.Vorobiev, AlexeiRutland, Mark W.
Av organisationen
Materialfysik
I samma tidskrift
Journal of Chemical Physics
Fysikalisk kemi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 74 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf