A Coumarin-Based Fluorescence Probe for Selective Recognition of Cu²⁺ Ions and Live Cell Imaging

Figure 6

Inverted fluorescence imaging of HepG2 cells incubated with L (10 μM) for 2.5 hours (a) and then further incubated with 6 equivalents of Cu²⁺ ions for 30 minutes (b). The corresponding bright field images of HepG2 cells incubated with L (10 μM) (c) and then further incubated with 6 equivalents of Cu²⁺ ions (d).

(a)

(b)

(c)

(d)