Abstract
Azobenzene dyad 1 possessing hydrophobic side chains has previously been reported to assemble into toroidal nanostructures, which can further stack to afford nanotubes in nonpolar media. In this study, amphiphilic dyad 2 was synthesized to obtain nanotubes with the hydrophilic interior. Dyad 2 directly assembled into nanotubes without forming isolatable toroidal nanostructures. UV light irradiation to the nanotubes resulted in monomerization by trans→cis photoisomerization, but following reconstruction by visible light irradiation afforded amorphous films, suggesting a kinetic trap of trans‐2 by residual cis‐2 through co‐aggregation.
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