Table 1. Statistical summary of hydrodynamic radii measurements of all nanoparticle formulations.

Functionalization	S421		S440		MNP
	mean [nm]	SD [nm]	mean [nm]	SD [nm]	mean [nm]	SD [nm]
Reactive thiol (-Thiol)	$89.9\pm 1.5$	$18.6\pm 1.3$	$73.2\pm 0.9$	$12.8\pm 1.5$	$255.3\pm 8.2$	$38.61\pm 3.1$
Methoxy capped (-MeO)	$194.5\pm 8.1$	$36.2\pm 6.1$	$157.7\pm 3.2$	$32.3\pm 4.1$	$524.9\pm 18.1$	$63.1\pm 9.1$
Folate (-FA)	$188.9\pm 2.6$	$33.1\pm 3.1$	$190.7\pm 1.1$	$38.1\pm 3.2$	$520.9\pm 23.6$	$25.6\pm 12.2$
PSMA inhibitor (-iPSMA)	$200.0\pm 6.2$	$54.1\pm 6.4$	$192.7\pm 11.7$	$35.7\pm 7.9$	$556.2\pm 19.3$	$63.1\pm 14.1$