Development of infrared electroabsorption spectroscopy for liquids

Hirotsugu Hiramatsu*, Chihiro Kato, Hiro O. Hamaguchi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

An infrared spectroscopic system has been constructed that is specifically designed for electroabsorption measurements of liquids. The system can detect electric-field-induced absorbance changes as small as one part in a million, two orders of magnitude better than the conventional difference spectrum method using FT-IR. Electroabsorption spectra of liquid 1,2-dichloroethane have been measured. The observed absorbance changes have been explained in terms of two dominant mechanisms; the change in the trans-gauche equilibrium, and the orientational polarization of the gauche conformer. It is demonstrated that infrared electroabsorption spectroscopy provides useful information on otherwise inaccessible electric properties of molecules in liquids.

Original languageEnglish
Pages (from-to)403-409
Number of pages7
JournalChemical Physics Letters
Volume347
Issue number4-6
DOIs
StatePublished - 26 Oct 2001

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