Fig. 3From: An Efficient Cell-Targeting Drug Delivery System Based on Aptamer-Modified Mesoporous Silica NanoparticlesCharacterization of nanomaterials. a Electron micrograph of Sgc8-MSN/Dox. b Potential diagram of nanoparticles. Particle size distribution of c MSN/Dox and d Sgc8-MSN/Dox. e FT-IR spectra of nanomaterials: a MSN, b MSN/Dox, and c Sgc8-MSN/Dox. f UV–Vis spectra of a Sgc8 aptamer solution, b washing supernatant in the process of preparation Sgc8-MSN/DoxBack to article page