Infrared spectroscopy of phosphatidylcholines in aqueous suspension. A study of the phosphate group vibrations.
The 1000-1300 cm-1 region of the infrared spectrum of dipalmitoylphosphatidylcholine (DPPC) and other phosphate-containing molecules has been studied by the Fourier-transform technique. Three absorption bands have been assigned to various vibrational modes of the DPPC phosphate group, with maximum wavenumbers at 1060, 1086 and 1222 cm-1. These values are the same above and below Tc of the phospholipid. Dehydration produces band-shifts toward higher wavenumbers .
D005583:Fourier Analysis; D008968:Molecular Conformation; D010713:Phosphatidylcholines; D011663:Pulmonary Surfactants; D013055:Spectrophotometry, Infrared; D013329:Structure-Activity Relationship; D014732:Vibration
D010713:Phosphatidylcholines; D011663:Pulmonary Surfactants