Table 1 |.

DLS size and zeta potential data for nanoparticles in water at neutral pH. Values for particle number and surface area per mass were obtained from specification sheets provided by the supplier.

Core		Surface chem.	Nomenclature	Z-average diameter		Zeta pot.	Particles per mass	Surface area
Size (nm)	Material			d.nm	PDI	(mV)	#/mg	cm2/mg
1200	silica	n.f.	1200 nm SiO−	1173*	0.05*	−84.0	5.41E+08	23
500	silica	n.f.	500 nm SiO−	536	0.08	−68.9	5.88E+09	52
200	silica	n.f.	200 nm SiO−	209	0.02	−57.6	1.09E+11	137
100	silica	n.f.	100 nm SiO−	90	0.05	−41.2	9.61E+11	280
50	silica	n.f.	50 nm SiO−	49	0.04	−41.4	7.81E+12	554
20	silica	n.f.	20 nm SiO−	26	0.05	−57.6	7.89E+13	1212
50	silica	COOH	50 nm SiO-COO−	46	0.15	−27.3	n/a	n/a
50	silver	PVP	50 nm Ag−	54	0.14	−21.4	1.47E+12	109
50	gold	PVP	50 nm Au−	61	0.09	−16.3	7.64E+11	59
50	polystyrene	n.f.	50 nm PS	58	0.06	0.2	n/a	n/a
50	silica	NH2	50 nm SiO-NH3+	49	0.44	15.6	7.24E+12	547
50	FITC-silica	n.f.	50 nm FITC-SiO−	56	0.20	−27.2	n/a	n/a
20	RhodB-silica	n.f.	20 nm RhodB-SiO−	23	0.20	−24.3	n/a	n/a

FITC = fluorescein isothiocyanate. RhodB = rhodamine B. n.f. = non-functionalised; PVP = 40,000 MW polyvinylpyrrolidone capping agent.

^*Values based on T.E.M. measurements and provided by manufacturer due to poor quality of DLS results with large particles.