Mesoporous silica nanocarriers with pH-switchable antifouling zwitterionic surface, enzyme responsive drug release properties and blue fluorescence are reported. Prolonged circulation in the blood system with zero premature release as well as efficient cellular uptake and intracellular drug release in tumor tissue are achieved.
Keywords: dual-stimuli responsiveness; mesoporous silica nanocarriers; selective cell imaging; switchable antifouling; tumor targeting drug delivery.
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