Abstract
AbstractA synthetic cationic surfactant, 5,5‐ditetradecyl‐2‐(2‐trimethyl‐ammonioethyl)‐1,3‐dioxane bromide (DTDB), was used to construct a supported bilayer lipid membrane (s‐BLM) coated on an underlying glassy carbon electrode (GCE). Electrochemical impedance spectroscopy (EIS), small‐angle X‐ray diffraction (SAXD) and cyclic voltammetry were used to characterize the s‐BLM. Both EIS and SAXD data indicated that the synthetic lipid exists as a well‐oriented bilayer in the membrane. The voltammetric study showed that the lipid membrane can open ion channels in the presence of ClO4−stimulant with Ru(bpy)2/3+ as marker ions and give distinct channel currents. The channels can be closed and open up again many times by removing or introducing ClO4−anions.
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