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Drug loading capacity and release behavior of GQDs/DOX@CCM. (a) Encapsulation efficiency of DOX with initial concentrations of 300, 400, and 500 μg/mL. (b) DOX release from GQDs/DOX@CCM at pH 5.0 and pH 7.4. (c) DOX release from GQDs/DOX@CCM after 5 min of NIR laser irradiation (808 nm, 1.44 W/cm2).
