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  • Title: The effect of 3-pentadecylphenol on DPPC bilayers ATR-IR and 31P NMR studies.
    Author: Cieślik-Boczula K, Koll A.
    Journal: Biophys Chem; 2009 Mar; 140(1-3):51-6. PubMed ID: 19073358.
    Abstract:
    The influence of 3-pentadecylphenol (PDP) on the structure and physicochemical properties of the lipid bilayers of DPPC liposomes was studied using ATR-IR and (31)P NMR methods. On the basis of analysis of the bands assigned to the CH(2) stretching, CH(2) scissoring, C=O stretching, and PO(2)(-) stretching vibrations it was revealed that PDP influences both the hydrophobic and hydrophilic parts of the DPPC liposome bilayer. Analysis of the (31)P NMR line-shape indicated a lamellar to non-lamellar phase transition in PDP-doped DPPC dispersions. It was shown that PDP/DPPC isotropic aggregates have similar nuC=O and nu(as)PO(2)(-) band positions and lower gauche populations in the hydrophobic chain region compared with the DPPC bilayer in the liquid-crystal phase.
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