I graft the cy5 to the polymer, then systheis the nanoparticles, why it is hard to detect the size of nanoparticles?

Hi, I graft the cy5 to the Polymer, then dialysis the polymer-cy5 to remove the free cy5. then make the nanoparticles as before, but the nanopartcile is unable to detect the size. Do you know why?

12 December 2019 999 3 View