Orientational ordering of alkyl chain at the air/liquid interface of ionic liquids studied by sum frequency vibrational spectroscopy
Orientation of cations at the air/liquid interfaces of the salts of 1-butyl-3-methyl imidazolium
with tetrafluoroborate and hexafluorophosphate is studied using infrared–visible sum
frequency vibrational spectroscopy. For both salts, quantitative analyses show that the
terminal methyl group of the butyl chain is polar-oriented with its symmetry axis aligned
nearly vertical to the surface.
with tetrafluoroborate and hexafluorophosphate is studied using infrared–visible sum
frequency vibrational spectroscopy. For both salts, quantitative analyses show that the
terminal methyl group of the butyl chain is polar-oriented with its symmetry axis aligned
nearly vertical to the surface.
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