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

被引：10

作者：

Ridings, Christiaan ^{[1
]}

Lockett, Vera ^{[2
,3
]}

Andersson, Gunther ^{[1
]}

机构：

[1] Flinders Univ S Australia, Flinders Ctr NanoScale Sci & Technol, Adelaide, SA 5001, Australia

[2] Univ S Australia, Ian Wark Res Inst, Mawson Lakes, SA 5095, Australia

[3] Worldwide, NthDegreeTechnol, Tempe, AZ 85284 USA

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2012年 / 413卷

关键词：

Ionic liquid; Surface charge; Depth profile; SUM-FREQUENCY GENERATION; SCATTERING SPECTROSCOPY NICISS; ELECTRICAL DOUBLE-LAYER; 1-BUTYL-3-METHYLIMIDAZOLIUM TETRAFLUOROBORATE; MOLECULAR-DYNAMICS; SALT-SOLUTIONS; CHAIN-LENGTH; TEMPERATURE; INTERFACE; CHEMISTRY;

D O I：

10.1016/j.colsurfa.2012.01.033

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Concentration depth profiles of the elements in [C(6)mim]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 [C(6)mim](+) 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. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

引用

页码：149 / 153

页数：5

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