Cationic polyhedral oligomeric silsesquioxane (POSS) units as carriers for drug delivery processes

Quaternary ammonium functionalized polyhedral oligomeric silsesquioxane (OctaAmmonium-POSS(R)) units, widely employed as additives in ceramic and polymeric systems, possess many attributes which make them attractive as biocompatible drug carriers: nanoscale size, three-dimensional functionality, efficient cellular uptake, low toxicity, and high solubility.