Table 1.

Properties of iron oxide nanoparticles with different coatings

Nanoparticle	Coating material	Size by DLS, (nm)	Weight % of coating shell by TGA	Zeta potential, (mV)
Ncit	citrate	34.4	2.0	−22.7
NCMD	CMD	42.1	12.1	−23.8
Nhep	heparin	40.6	13.5	−51.2
Ngly	glycine	40.1	1.6	+25.0
NPLL	PLL	46.2	10.5	+28.9
NPEI	PEI	43.7	18.7	+47.1

CMD: carboxymethyl dextran, PLL: polylysine, PEI: poly(ethyleneimine)