Comparing the charge distribution along the surface normal in the [C6mim]+ ionic liquid with different anions

Christiaan Ridings; Vera Lockett; Gunther Andersson

doi:10.1016/j.colsurfa.2012.01.033

Comparing the charge distribution along the surface normal in the [C6mim]+ ionic liquid with different anions

Christiaan Ridings, Vera Lockett, Gunther Andersson

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Concentration depth profiles of the elements in [C₆mim]X (X=[BF₄]^- and [Cl]^-) have been determined using neutral impact collision ion scattering spectroscopy in order to investigate how the choice of the anion influences the surface structure of the [C₆mim]⁺ ionic liquids. The results show that the more polarisable, fluorinated anion [BF₄]^-, has a stronger tendency to adsorb to the surface compared to [Cl]^-. While the [BF₄]^- intermingles with the cation aliphatic chains, the decreased surface propensity of the [Cl]^- allows for the preferential orientation of the cation aliphatic chains pointing towards the vapour phase.

Original language	English
Pages (from-to)	149-153
Number of pages	5
Journal	Colloids and Surfaces A-Physicochemical and Engineering Aspects
Volume	413
DOIs	https://doi.org/10.1016/j.colsurfa.2012.01.033
Publication status	Published - 5 Nov 2012

Keywords

Depth profile
Ionic liquid
Surface charge

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10.1016/j.colsurfa.2012.01.033

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title = "Comparing the charge distribution along the surface normal in the [C6mim]+ ionic liquid with different anions",

abstract = "Concentration depth profiles of the elements in [C6mim]X (X=[BF4]- and [Cl]-) have been determined using neutral impact collision ion scattering spectroscopy in order to investigate how the choice of the anion influences the surface structure of the [C6mim]+ ionic liquids. The results show that the more polarisable, fluorinated anion [BF4]-, has a stronger tendency to adsorb to the surface compared to [Cl]-. While the [BF4]- intermingles with the cation aliphatic chains, the decreased surface propensity of the [Cl]- allows for the preferential orientation of the cation aliphatic chains pointing towards the vapour phase.",

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AU - Ridings, Christiaan

AU - Lockett, Vera

AU - Andersson, Gunther

PY - 2012/11/5

Y1 - 2012/11/5

N2 - Concentration depth profiles of the elements in [C6mim]X (X=[BF4]- and [Cl]-) have been determined using neutral impact collision ion scattering spectroscopy in order to investigate how the choice of the anion influences the surface structure of the [C6mim]+ ionic liquids. The results show that the more polarisable, fluorinated anion [BF4]-, has a stronger tendency to adsorb to the surface compared to [Cl]-. While the [BF4]- intermingles with the cation aliphatic chains, the decreased surface propensity of the [Cl]- allows for the preferential orientation of the cation aliphatic chains pointing towards the vapour phase.

AB - Concentration depth profiles of the elements in [C6mim]X (X=[BF4]- and [Cl]-) have been determined using neutral impact collision ion scattering spectroscopy in order to investigate how the choice of the anion influences the surface structure of the [C6mim]+ ionic liquids. The results show that the more polarisable, fluorinated anion [BF4]-, has a stronger tendency to adsorb to the surface compared to [Cl]-. While the [BF4]- intermingles with the cation aliphatic chains, the decreased surface propensity of the [Cl]- allows for the preferential orientation of the cation aliphatic chains pointing towards the vapour phase.

KW - Depth profile

KW - Ionic liquid

KW - Surface charge

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DO - 10.1016/j.colsurfa.2012.01.033

M3 - Article

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SP - 149

EP - 153

JO - Colloids and Surfaces A-Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A-Physicochemical and Engineering Aspects

SN - 0927-7757

ER -

Comparing the charge distribution along the surface normal in the [C6mim]+ ionic liquid with different anions

Abstract

Keywords

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