Fig. 5.

ICG encapsulation efficiencies as a function of TOAC:ICG ratio (in situ complex formation): (a) size distributions of particles (▪ micelles (0 TOAC, 0 VE),• 0 TOAC, ▴ $1:10$ $\mathrm{TOAC}:\mathrm{ICG}$, ▾ $1:2$ $\mathrm{TOAC}:\mathrm{ICG}$, ◂ $1:1$ $\mathrm{TOAC}:\mathrm{ICG}$, ▸ $2:1$ $\mathrm{TOAC}:\mathrm{ICG}$, ♦ $10:1$ $\mathrm{TOAC}:\mathrm{ICG}$) and (b) the ratio of TOAC to ICG was varied from 0 to $10:1$ for in situ ICG NC precipitation. The number of TOAC equivalents relative to ICG is labeled on the abscissa.