Fig. 2.

Examples of UV–vis spectra of C₆₀ dispersed in aqueous solutions of Rsn-2 (upper panel) or latherin (lower panel). The inserts show superimposed spectra of samples after storage at 4 °C for approximately 1, 2 and 6 months. (Absorbances measured on a Nanodrop using 0.1 or 1 mm path length, but scaled here to 1 cm path length for convenience.)