Fig. 6. Confocal fluorescence images of HeLa cells after incubation with (A) nanoprobe-9 (10 μL) and (B) nanoprobe-3 (10 μL) for 3 h and then NIR irradiation for different times. Green fluorescence at λ _ex/em of 488/500–560 nm. Red fluorescence at λ _ex/em of 633/680–740 nm. Scale bars, 25 μm.