Solid-Phase Immunoassay of Polystyrene-Encapsulated Semiconductor Coreshells for Cardiac Marker Detection

Table 1

DLS characterization of PS-COOH particles with two different fractions of comonomer (AA) with either one-step or two-step emulsion polymerization.

PS-COOH	AA fraction (%)	𝐷h of PS-COOH particles (nm)				𝜁 potential (mV)	Surface Charge density (𝜇C/cm^2)
		DW	PBS	TX-100	NaHCO3
PS-COOH #1	10	482.9	563.7	549.7	607.4	−24.7	−2.14
PS-COOH #2	20	340.4	436.2	362.5	377.3	−22.6	−1.95
PS-COOH #3*	10	255.8	271.8	251.6	280.8	−37.0	−3.50
PS-COOH #4*	20	540.1	716.3	579.4	776.5	−28.9	−2.61

*Two-step emulsion polymerization.