“…ATRP reactions have been extensively used to grow polymer/block copolymer brushes from the surface of silica with controlled graft densities [ 82 , 83 , 84 ]. For example, polymer/copolymer brushes of PMMA [ 83 , 85 ], polystyrene (PS) [ 86 , 87 ], poly(glycidyl methacrylate) (PGMA) [ 88 , 89 ], poly(2-hydroxyethyl methacrylate) (PHEMA [ 90 ], poly(4-vinylpyridine) (PVP) [ 91 ], poly(N-isopropylacrylamide) (PNiPAAm) [ 92 ], poly(sodium 4-styrene sulfonate) (PSS) [ 93 ], poly((ethylene glycol)methyl ether methacrylate) (POEGMA) [ 94 ], poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) [ 95 , 96 ], etc. have been successfully grafted on SiO 2 surface via SI-ATRP.…”