Fig. 7: Photophysical, cytocompatibility, and cellular uptake investigations.

a Excitation-dependent fluorescence spectra of the developed compound, b MTT and in-vitro cytocompatibility of the developed compounds c live-dead assay for 24 h, and d cellular labeling of NIH-3T3 cells with the developed compounds. (Scale bar: 100 µm). The data represents the mean and standard deviation of three independent samples (n = 3).