physics-lasertech-2019-keynote

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allied
academies
April 15-16, 2019 | Frankfurt, Germany
Applied Physics & Laser, Optics and Photonics
International Conference on
Page 21
Materials Science and Nanotechnology | Volume: 3
Room temperature ionic liquids (RTILs) purely
consistofcationsandanions(withoutsolvent),but
they are liquids at room temperature. RTILs possess
characteristic features, such as low melting point,
negligible vapor pressure at ambient temperature
and pressure (and thus less flammable), and so on.
Such unique properties are mainly attributed to
the complex intermolecular interactions in RTILs.
Because the intermolecular vibrations reflect the
microscopic structureand intermolecular interactions
in condensed phases, it is essential to study them to
understand RTILs in detail. Femtosecond Raman-
induced Kerr effect spectroscopy (fs-RIKES) detects
the molecular motions in the low-frequency or THz
region (~0.3–700 cm-1 or ~0.01–20 THz) where the
intermolecular vibrational bands in most condensed
phases locate. Therefore, fs-RIKES is useful to study
condensed phases including RTILs. In this talk, I am
going to show some results of fs-RIKES studies of
RTILs, such as temperature dependent low-frequency
spectral features and effects of aromatic ring on the
low-frequency spectrum.
Speaker Biography
Hideaki Shirota received his PhD from the Graduate University for
Advanced Studies, Japan. He is an associate professor of chemistry
in Chiba University. His current research interests include molecular
spectroscopy, laser spectroscopy, time-resolved spectroscopy, molecular
dynamics in condensed phases, reaction dynamics in solutions, and
solution chemistry.
e:
Hideaki Shirota
Chiba University, Japan
Intermolecular vibrations of room temperature ionic liquids studied
by femtosecond Raman-induced Kerr effect spectroscopy