Structure Tuning of Electrostatically Self-Assembled Nanoparticles through pH.

摘要: pH can be used to tune the self-assembly of cationic polyelectrolyte dendrimers and oppositely charged dyes produce particles with a desired shape size in aqueous solution. We present fundamental insight into effect on electrostatic poly(amidoamine) generation 4 di- trivalent anionic organic dyes. The solution is as key turn interaction control association by regulating macroion charge. Stable well-defined nanoparticles are formed solution, being more stable at low where dendrimer protonation complete. Nanoparticle stability was correlated ζ-potential measurements. prove that assemblies electrostatically stabilized elucidate importance surface charge density. also nanoparticle dimension shape. For example, smaller form lower pH. nanostructures have been characterized using dynamic light scattering small-angle neutr...