Probing the Surface Tension of Ionic Liquids Using the Langmuir Principle

Journal article


Publication Details

Author(s): Shimizu K, Heller B, Maier F, Steinrück HP, Canongia Lopes JN
Journal: Langmuir
Publisher: AMER CHEMICAL SOC
Publication year: 2018
Volume: 34
Journal issue: 14
Pages range: 4408-4416
ISSN: 0743-7463
eISSN: 1520-5827


Abstract

At 298 K, the surface tension of ionic liquids (ILs) of the 1-alkyl-3-methylimidazolium bis- (trifluoromethylsulfonyl)imide series, [CnC1,Im][NTf2 ], ranges 36 from around 35 mN center dot m(-1) for [C2C1 Im][NTf2] to just below 30 mN center dot m(-1)for [C(12)C(1)Im][NTf2]. However, the decrease rate along the series is not constant: a large decrease from [C(2)C(1)Im][NTf2] to [C(8)C(1)Im][NTf2] is followed by almost constant values from [C(8)C(1)Im][NTf2] to [C(12)C(1)Im][NTf2]. Such behavior is hard to interpret from a molecular point of view without suitable information about the free-surface structure of the different ILs. In this work, we have successfully used the Langmuir principle in combination with structural data obtained from angle-resolved Xray photoelectron spectroscopy experiments and molecular dynamics simulations, to predict the correct surface tension trend along the IL series. The concepts unveiled for this particular homologous IL family can be easily extended to other systems.


FAU Authors / FAU Editors

Heller, Bettina
Lehrstuhl für Physikalische Chemie II
Maier, Florian Dr.
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II


External institutions
University of Lisbon / Universidade de Lisboa (ULisboa)


How to cite

APA:
Shimizu, K., Heller, B., Maier, F., Steinrück, H.-P., & Canongia Lopes, J.N. (2018). Probing the Surface Tension of Ionic Liquids Using the Langmuir Principle. Langmuir, 34(14), 4408-4416. https://dx.doi.org/10.1021/acs.langmuir.7b04237

MLA:
Shimizu, Karina, et al. "Probing the Surface Tension of Ionic Liquids Using the Langmuir Principle." Langmuir 34.14 (2018): 4408-4416.

BibTeX: 

Last updated on 2018-10-09 at 16:08