Figure 2
From: Self assembly of amphiphilic C60 fullerene derivatives into nanoscale supramolecular structures
Solubility profile of AF-1 in varying pH and buffer conditions. The concentration of AF-1 was kept constant at 2 mg/mL. The buffers were (A) 1 × PBS at pH 7.15, (B) 0.2 M phosphate-citrate at pH 7.0, (C) 10 mM citrate at pH 7.0 and (D) 10 mM citrate at pH 7.4. The time after addition of the buffer was (1) 5 min, (2) 15 min, (3) 30 min, (4, 5) 4 hrs. The vials were gently shaken to disperse AF-1 in solution. However in (5) the sample was vortexed for 5 minutes.