Fig. 2From: Co-delivery of nanoparticle and molecular drug by hollow mesoporous organosilica for tumor-activated and photothermal-augmented chemotherapy of breast cancerMorphology and structure characterization of HCu. TEM images of (a) HMONs, b CuS, and c HCu. d The average particle size of HMONs and HCu was determined by DLS. e The corresponding pore-size distributions of HMONs and HCu. f The releasing profiles of Cu in the buffer solutions with varied pH conditions (pH = 6.0 and pH = 7.4)Back to article page