Phase transition of an unnatural analog of phosphatidylcholine: Phosphatidyl-N-isopropylethanolamine

The phase-transition temperature, of an aqueous dispersion of dipalmitoyl phosphatidyl-N-isopropylethanolamine was determined was determined usingtrans-parinaric acid as a fluorescent probe. Phosphatidyl-N-isopropylethanolamine has a phase-transition temperature that is 3–4 C higher than the corresponding natural analog of dipalmitoyl phosphatidylcholine.