Calculation of van't Hoff enthalpy associated with aspirin-induced change in liposomal membrane anisotropy

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Abstract
The lipid disordering effect of aspirin on the liposomal membrane of dipalmitoyl phosphatidyl choline has recently been studied using the fluorescence polarization method. From the anisotropy - temperature curve, we have calculated here the associated change in van't Hoff enthalpy. Since the fluorescence technique requires a very small amount of sample ( M), this method of enthalpy calculation compares well and is advantageous over the standard calorimetric methods.