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Oleyl dextran‐coated magnetic nanoclusters (ODMCs) are fabricated for the accurate detection of macrophage‐rich atherosclerotic plaques using magnetic resonance (MR) imaging. Dextran is introduced to the cluster surface of magnetic nanocrystals (MNCs) through self‐assembly using amphiphilic oleic acid‐conjugated dextran (ODex) to provide not only hydrophilicity but also a high affinity to macrophages...
Herein, 3‐carboxy‐5‐nitrophenylboronic acid (CNPBA) shell‐crosslinked micelles based on amphiphilic dextran‐block‐polylactide (Dex‐b‐PLA) are prepared and used for efficient intracellular drug deliveries. Due to the reversible pH‐dependent binding with diols to form boronate esters, CNPBA modified Dex‐b‐PLA shows excellent pH‐sensitivity. In neutral aqueous conditions, CNPBA‐Dex‐b‐PLA forms shell‐crosslinked...
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