Fabrication of SnO 2 /porous silica/polyethyleneimine nanoparticles for pH-responsive drug delivery

To create novel nanocarriers for achieving excellent drug delivery performance, pH-responsive fluorescent porous silica (PS) nanocarriers were developed by encapsulating SnO2 nanoparticles and coating polyethyleneimine (PEI) layer. SnO2/porous silica (SnO2/PS) nanoparticles have an average diameter of 80 nm and center-radial large pore channels. The large channels endow them high surface area with a Brunauer–Emmett–Teller (BET) area of 939 m2 g−...