Table 2.

Samples characterization in hydrodynamic diameter, ζ-potential, and PDI

Sample	Hydrodynamic diameter ± SD	ζ-Potential (mV) ± SD	PDI
NioTween20	162.0 ± 2.0	− 22.8 ± 0.2	0.26
NioTween20-pHLIP	168.5 ± 2.3	− 19.5 ± 0.6	0.37
NioSpan20	165.5 ± 3.3	− 36.4 ± 0.9	0.35
NioSpan20-pHLIP	156.3 ± 1.0	− 38.4 ± 2.3	0.21
LipoDMPC	139.7 ± 2.4	− 15.9 ± 0.4	0.15
LipoDMPC-pHLIP	129.8 ± 2.0	− 10.8 ± 0.4	0.13