Single-walled carbon nanotubes (SWNTs) are hollow, cylindrical carbon materials with high permeability to ions and watermolecules. Therefore, SWNTs are expected to be applied by incorporating them into spherical artificial lipid membranes(liposomes). Currently, the mass transport process through SWNTs is evaluated by the change in fluorescence intensity offluorescent probes in liposomes. However, it is difficult to determine the cause of the change in fluorescence intensity due to theirsmall size. In this study, we propose a new approach using liposomes with a diameter of over 10 μm (giant liposomes). Byincreasing the size of the liposomes, we can measure the ion penetration and transport processes of SWNTs while easilyobserving their shapes with a microscope.
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