Table 1.

Particle characterization

	Particle Type	Particle Size (nm)	PDI	ζ pH 7,3 (mV)
Polystyrene particles	carboxyl	222	0.033	−34.7 ± 1.0
PEG	231	0.024	−11.4 ± 1.6
amine	253	0.087	+7.5 ± 1.7
Liposomes	DOPG	185	0.24	−50.2 ± 1.7
DOPC	194	0.26	+1.3 ± 0.3
DOTAP	171	0.19	+41.0 ± 0.8

Particle size, polydispersity index (PDI), and particle ζ-potential are determined from dynamic light scattering for polystyrene particles and liposomes.