Abstract
The cyclic voltammogram and electrochemical impedance spectroscopy of self-assembled, stainless steel supported bilayer lipid membranes (s-BLMs) were investigated using a three-electrode system. The membrane resistance and capacitance calculated from the whole impedance spectrum rather than at certain frequency were close to the conventional BLMs (planar lipid bilayers). The time course of impedance under certain applied frequencies was investigated. The results showed that the membrane capacitance of s-BLM fluctuated under low frequency and gradually reached a constant value with the increase of the applied frequency. Fullerenes doped s-BLM were demonstrated to intensify this fluctuation behavior of membrane capacitance. A possible mechanism of this peculiar property of s-BLMs under low frequencies is discussed.
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