A unique fluorescent supramolecular assembly was constructed from coumarin-modified β-cyclodextrin and an adamantane-modified cyclic arginine–glycine–aspartate peptide for high-efficiency real-time monitoring of biothiols in cancer cells.
A probe with a targetable feature and ratiometric fluorescence as well as NIR emission light-up response to nitroreductase is presented for the precise imaging of mitochondria in cancer cells by real-time monitoring of nitroreductase activity.