[Energetic profile of dipole molecules in membranes]

Free energy of the dipole muscle inside the membrane in relation to its orientation and the distance to the membrane border was calculated. Efficient energy describing molecule concentration was found. Water concentration in BLM was evaluated by three methods: according to the membrane permeability to water, according to the data on interface equilibrium, and directly according to the value of calculated free energy. All methods give the value of the order of 10(-3) g/cm3. It has been shown that for the particles with a significant dipole momentum the work of particle transfer from the membrane surface into its depth comprises 3/8 of the complete work of interphase transition (for ions this ratio is 1/2).