Particle sizes determined by SAXS based on a model of polydisperse homogeneous spheres. A Gaussian size distribution was used in the form factor model, the size is given as two times the radius of a sphere. The SAXS sizes are compared to the minimum Feret (smallest average length) and the Feret diameter (actual average particle size obtained from TEM). Take note that due to the spatial orientation over all angles and the particle count in dispersion, cubic particles may also be approximated as spherical objects.

Sample	SAXS size [nm]	MinFeret [nm]	Feret [nm]
S3	2.0 ± 0.8	1.7 ± 0.7	2.8 ± 1.0
S4	2.4 ± 1.0	2.3 ± 0.5	3.9 ± 1.2
S5	3.2 ± 1.6	3.2 ± 0.6	4.7 ± 1.0
Cb8	6.2 ± 1.1	5.7 ± 1.4	7.2 ± 1.6
Cb11	9.0 ± 2.0	8.8 ± 1.9	10.9 ± 2.4
Cb13	11.0 ± 1.7	10.7 ± 1.6	13.2 ± 2.1