title: Pulse NMR study of phase transitions in dipalmitoyl phosphatidylcholine multilayer systems.
abstract: Pretransition and main transition of aqueous dipalmitoyl phosphatidylcholine (DPPC) dispersions were investigated by pulse NMR. The second moment M2 inter of the proton absorption line shows significant changes at 42 degrees C and about 35 degree C. Over the whole investigated temperature range between 25 and 50 degree C a superposition of at least two distinct second moments assigned to different molecular regions was observed.
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D008433:Mathematics; D008567:Membranes, Artificial; D008968:Molecular Conformation; D011663:Pulmonary Surfactants; D013696:Temperature
chemical_list: D008567:Membranes, Artificial; D011663:Pulmonary Surfactants