Table 1.

cSCK nanoparticles and physical characteristics

Nanoparticle	Structure	ζ-potential at pH 5.5 in nanopure water (mV)	Size (nm)*
non-PEG cSCK	cSCK-pa100	21.7 ± 2.4	14 – 18
cSCK-pa75-ta25	cSCK-pa75-ta25	ND	14 – 18
cSCK-pa50-ta50	cSCK-pa50-ta50	25.0 ± 2.7	14 – 18
cSCK-pa25-ta75	cSCK-pa25-ta75	ND	14 – 18
cSCK-2PEG	cSCK-pa100-2PEG	15.4 ± 1.8	20 – 25
cSCK-5PEG	cSCK-pa100-5PEG	8.8 ± 2.5	20 – 25
cSCK-10PEG	cSCK-pa100-10PEG	1.7 ± 2.8	20 – 25

Abbreviations: pa, primary amine; ta, tertiary amine; ND, not determined

^*Determined by dynamic light scatterning