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In this paper, a smart nanocarrier (MSNs-SS-CDPAA) is developed for redox-responsive controlled drug delivery and in vivo bioimaging by grafting fluorescent carbon dots to the surface of mesoporous silica nanoparticles (MSNs) via disulfide bonds. The polyanion polymer poly(acrylic acid) (PAA) was used to prepare the carboxyl-abundant carbon dots (CDPAA) by hydrothermal polymerization. The negatively...
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