Aggregation rate and fractal dimension of fullerene nanoparticles via simultaneous multiangle static and dynamic light scattering measurement

► Time-evolutions of fullerene nanoparticle size and aggregate fractal dimension were determined. ► Humic acid suppressed the rate of fullerene nanoparticle aggregation. ► Aggregate fractal dimension decreased with time, suggesting changes in aggregate structure. ► Humic acid impacts aggregate structure, resulting in aggregates with more open structure. ► Simultaneous multiangle static and dynamic light scattering is a versatile tool for nanoparticle research.