How Do Steric Interactions Affect Nanoparticle Stability?
Steric interactions play a key role in the stability of nanoparticles. When nanoparticles are functionalized with organic molecules or polymers, these coatings create a steric barrier that prevents the particles from coming too close to one another. This prevents aggregation and helps maintain a stable dispersion. For instance, the use of polyethylene glycol (PEG) to coat nanoparticles can significantly enhance their colloidal stability by providing a steric shield.
