Phase states in hydrated phospholipids studied by near-IR spectroscopy

V.D.Panikarskaya, L.N.Lisetski

Institute for Single Crystals, National Academy of Sciences of Ukraine, 60 Lenin Ave., 310001 Kharkiv, Ukraine

Received July 20, 1998, after revision October 1, 1998

Temperature dependences of near IR spectra were studied for hydrated 1,2-diacylphosphatidyl-cholines. 1.4 m and 1.9 m bands corresponding to combined frequencies of deformational and antisymmetric valence vibrations of water molecules were shown to undergo significant changes in intensity at temperatures corresponding to transitions between different liquid crystalline phases. This is attributed to changes in the associated states of water in the bilayer structure.

Previous | Contents | Next