Interaction of Levitated
Ionic Liquid Droplets with
Water
Jonas Schenk
Ulrich Panne
Merwe Albrecht
10.1021/jp309661p.s001
https://acs.figshare.com/articles/journal_contribution/Interaction_of_Levitated_Ionic_Liquid_Droplets_with_Water/2463316
The influence of a humid or dry atmosphere on acoustically
levitated
ionic liquid droplets was studied by volumetric analysis and vibrational
spectroscopy. Imidazolium-based ionic liquids with two types of anions,
fluorinated (BF<sub>4</sub> and PF<sub>6</sub>) and alkylsulfate anions,
were investigated. The amount of absorbed water was correlated with
structural differences of the ionic liquids and analyzed in terms
of equilibrium mole fraction as well as absorption rate. The type
of anion had the most significant influence on the amount of adsorbed
water from the atmosphere. Furthermore, spectral changes in the in
situ Raman spectra due to absorbed water were studied for all investigated
ionic liquids. For 1-ethyl-3-methylimidazolium ethylsulfate, an exemplary
detailed analysis of the intermolecular interactions between cations,
anions and water was carried out based on the spectroscopic data.
The observed band shifts were explained with a hydrogen bond between
the anion and water.
2012-12-06 00:00:00
vibrational spectroscopy
atmosphere
absorption rate
spectroscopic data
band shifts
equilibrium mole fraction
alkylsulfate anions
hydrogen bond
PF
type
Liquid Droplets
BF 4
Raman spectra
WaterThe influence
analysis