Author/Authors :
Iimori، نويسنده , , Toshifumi and Iwahashi، نويسنده , , Takashi and Ishii، نويسنده , , Hisao and Seki، نويسنده , , Kazuhiko and Ouchi، نويسنده , , Yukio and Ozawa، نويسنده , , Ryosuke and Hamaguchi، نويسنده , , Hiro-o and Kim، نويسنده , , Doseok and Shen، نويسنده ,
Abstract :
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.
