Biologija / Biology
 ISSN 1392-0146 ISSN 2029-0578 (online) |
2004 m. Nr. 4 Raman and infrared spectroscopic study of phytantriol
and phytantriol-water cubic phases
Phytantriol and phytantriol-water cubic phases were studied by vibrational spectroscopy (FT-IR and FT-Raman). Assignments of the bands were performed based on the OH/OD isotopic substitution, measurements of FT-Raman polarization spectra and temperature-dependent spectral changes. The conformation and H-bonding sensitive modes have been identified. It has been shown that the frequency of methylene deformation vibration increases in liquid-crystalline cubic phases as compared with melted phytantriol, indicating an alteration of the interactions between alkyl chains in the lipidic layer. Analysis of the high frequency FT-Raman spectral range revealed broadening of the CH3 asymmetric stretching band of cubic phases due to an increased heterogeneity of the local environment of methyl groups.
Keywords: phytantriol, cubic phases, FT-IR, FT-Raman, hydrogen bonding |
Issues:
2011 - Vol.57 No. 1, No. 2, No. 3 2010 - Vol.56 No. 1-4 2009 - Vol.55 No. 1-2, No. 3-4 2008 - Vol.54 No. 1, No. 2, No. 3, No. 4 2007 - Vol.53 No. 1, No. 2, No. 3, No. 4 2006 No. 1, No. 2, No. 3, No. 4 2005 No. 1, No. 2, No. 3, No. 4 2004 No. 1, No. 2, No. 3, No. 4 2003 No. 1, No. 2, No. 3, No. 4 2002 No. 1, No. 2, No. 3, No. 4 2001 No. 1, No. 2, No. 3, No. 4 |