title: The gel phase of dipalmitoyl phosphatidylcholine. An infrared characterization of the acyl chain packing.
abstract: It is shown, by infrared spectroscopy, that the packing in the gel phase of fully-hydrated dipalmitoyl phosphatidylcholine is not uniform over a large temperature range. With decreasing temperature, starting at that of the pretransition, there is a gradual change in the molecular packing of the acyl chains, from near hexagonal to orthorhombic of monoclinic.
mesh_terms: D005782:Gels; D008051:Lipid Bilayers; D008968:Molecular Conformation; D011663:Pulmonary Surfactants; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D013696:Temperature
chemical_list: D005782:Gels; D008051:Lipid Bilayers; D011663:Pulmonary Surfactants