Table 1.

Nanoparticle size averages of the seven formulations. Z-average determined by dynamic light scattering (DLS), with all other sizing determined by nanoparticle tracking analysis (NTA). Error reported is standard error of the mean.

Polymer	Molecular Weight (Da)	wt/wt	Number-weighted mean particle diameter (nm)	Mean volume based-diameter (nm)	Z-average particle diameter (nm)
B4S4E7	28590	40	120±10	130±10	291±9
B4S4E7	28590	60	130±10	150±10	379±9
B4S5E7	11072	60	110±10	130±10	106±9
B5S3E7	4632	60	114±3	124±4	110±10
B5S3E7	4632	100	101±2	112±4	120±10
B5S5E1	2873	100	106±1	115±1	113±5
PEI 25kDa	25000	2	150±10	170±10	317±2