An AFM image of a spin-coated film from a NaHA–dendrimer
composite (NaHA concentration = 0.04 wt%, a ratio = [1/0.01],
with the coupling reaction) after dialysis is compared to
that before dialysis in Fig. 4. The large beads, which were
found after the coupling reaction, became smaller after
dialysis, although the network texture through strings
remained. Instead, small aggregates appeared on the network
as nano-knots of the network. This indicates that
dendrimers, free from covalent-bonding or bound electrostatically,
were removed from the large beads. Then the nano-knots