TABLE 2

Physicochemical characterization of Stöber and mesoporous silica nanoparticles in different solutions: water, cell culture medium (RPMI) with serum (fetal bovine serum), and without serum

Values are the mean ± S.D. (n = 3).

	Hydrodynamic Diameter			Zeta Potential			Diameter by TEM
	Water	RPMI	RPMI and 10% Serum	Water	RPMI	RPMI and 10% Serum	Diameter by TEM
	nm	nm	nm	mV	mV	mV	nm
Stöber 50 nm^{^a}	108.1 ± 6.3	95.52 ± 2.5	190.5 ± 4.8	−40.3 ± 1.9	−22.7 ± 1.4	−9.57 ± 0.4	46 ± 4.9
Stöber 100 nm	133.1 ± 2.4	123 ± 0.5	291.9 ± 3.2	−52.5 ± 1.2	−28.7 ± 1.7	−10.7 ± 1.0	91 ± 8.2
Stöber 200 nm	248.3 ± 1.7	245.9 ± 5.6	434.3 ± 2.2	−45.9 ± 1.2	−33.3 ± 1.4	−10.1 ± 0.6	205 ± 8
Stöber 350 nm^{^a}	378.3 ± 5.4	402.6 ± 7.3	566.6 ± 17.6	−32.1 ± 2.6	−27.8 ± 1.2	−10.5 ± 1.75	357 ± 22.8
Stöber 500 nm^{^a}	520.3 ± 4.8	497.7 ± 5.3	539.7 ± 6.2	−53.1 ± 1.5	−32.1 ± 1.1	−9.48 ± 0.5	432 ± 18.7
Meso 500 nm^{^a}	799.8 ± 22.9	999 ± 23	915 ± 72	−44 ± 0.8	−20.4 ± 0.7	−8.03 ± 0.5	466 ± 86

↵^a Data for synthesis and characterization of these particles was reported previously (Saikia et al., 2016; Yazdimamaghani et al., 2018b).