Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Near-infrared Spectroscopic Studies of the States of Water in Lyotropic Liquid Crystals
Masuo AizawaShuichi Suzuki
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1973 Volume 46 Issue 9 Pages 2634-2637


The states of water in lyotropic liquid crystals of the polyoxyethylene–nonylphenylether and water system were investigated by means of near-infrared spectroscopic measurements. The states of water were classified into nonbonded, singly-hydrogen-bonded, and doubly-hydrogen-bonded states, and their relative concentrations were calculated from the intensities of the combination bands of 2ν13 and ν123 in the temperature range from 25 to 50 °C. An increase in the hydrogen-bonded water species was found for the liquid crystal. Furthermore, the nonbonded and singly-hydrogen-bonded water species decreased, while the doubly-hydrogen-bonded water species increased in the liquid crystal structure, as compared with ordinary water. The structural properties of the liquid crystal are discussed.

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