Fig. 3

(A) Absorption spectra of ABDA after NIR irradiation by 1O2 generated from CSN-IR806/CB. (B) ESR analysis of 1O2 production at the predetermined time points. (C) HPLC analysis of CB release triggered by different concentrations of Na2S2O4. (D) Size changes of CSN-IR806/CB incubated with Na2S2O4 of 25.6 mM. TEM images of CSN-IR806/CB incubated with Na2S2O4 of 6.4 mM for (E) 0.5Â h, (F) 2Â h, and (G) 4Â h