Title :
Probing Local Structure of Ionic Liquids with Picosecond Time-resolved Raman Spectroscopy
Author :
Iwata, Keiji ; Yoshida, Kyosuke ; Hamaguchi, Hiro-o
Author_Institution :
Res. Centre for Spectrochemistry, Univ. of Tokyo, Tokyo
Abstract :
Vibrational cooling kinetics of the first excited singlet (S1) state of trans-stilbene in ionic liquids was measured with picosecond time-resolved Raman spectroscopy. There was no correlation observed between the cooling rate and the thermal diffusivity of the solvent, suggesting the presence of local structures in the ionic liquids.
Keywords :
Raman spectra; cooling; excited states; liquid structure; organic compounds; thermal diffusivity; time resolved spectra; vibrational modes; cooling rate; excited singlet state; ionic liquids; local structures; picosecond time-resolved Raman spectroscopy; solvent; thermal diffusivity; transstilbene; vibrational cooling kinetics; Electronics cooling; Energy exchange; Heat transfer; Kinetic theory; Liquids; Microscopy; Raman scattering; Solvents; Spectroscopy; Vibration measurement;
Conference_Titel :
Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-1173-3
Electronic_ISBN :
978-1-4244-1174-0
DOI :
10.1109/CLEOPR.2007.4391610
