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. 2015 Aug 8;13:50. doi: 10.1186/s12951-015-0112-6

Fig. 2.

Fig. 2

The graph illustrates distribution of particles size and zeta potential values of [60]fullerene derivatives in aqueous suspension. Data analysis with (a) and without (b) the negative and positive sign of the particles’ surface charge. White circles negatively charged compounds; black circles positively charged compounds.