So-called ‘relaxation’ mode located at 0.1 cm−1 in the low-frequency Raman spectra of ethylene glycol - acetone mixtures | Zendy

Yuko Amo | Zendy; Yasuo Kameda | Zendy; Takeshi Usuki | Zendy

Open Access

So-called ‘relaxation’ mode located at 0.1 cm−1 in the low-frequency Raman spectra of ethylene glycol - acetone mixtures

Author(s) -

Yuko Amo,

Yasuo Kameda,

Takeshi Usuki

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4952588

Subject(s) - raman spectroscopy , dielectric , ethylene glycol , acetone , relaxation (psychology) , analytical chemistry (journal) , spectral line , mole fraction , chemistry , materials science , chromatography , optics , organic chemistry , physics , psychology , social psychology , optoelectronics , astronomy

Low frequency Raman spectra of ethylene glycol(EG) and acetone mixtures are investigated by high-resolution double monochrometer. A broad peak located at 0.1 cm−1 in susceptibility spectra is compared with the dielectric loss spectra. Both Raman relaxation time(τMRT1) and dielectric relaxation time(τD1) are determined by the model fitting method. The ratio τMRT1/τD1 does not depend on static dielectric constant of mixtures and is almost constant, ≈3.2, from 1.0 (pure EG) to 0.3 mole fraction. This result indicates that both τMRT1 and τD1 are determined by the same molecular dynamics

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