Figure 2

Morphologies of PDA-Azo-TEG nanotubes. (a,b) TEM images showing hollow nanotubes. (c) Schematic illustrating the multilayered nanotube wall.
Morphologies of PDA-Azo-TEG nanotubes. (a,b) TEM images showing hollow nanotubes. (c) Schematic illustrating the multilayered nanotube wall.