Fullerenol-Capped Porous Silica Nanoparticles for pH-Responsive Drug Delivery

Figure 2

(a) Nitrogen adsorption/desorption isotherms and (b)–(d) BJH pore size volume and size distributions for PSN, FNP@PSN, and FNP/9-AA@PSN.

(a)

(b)

(c)

(d)