A coumarin-based two-photon (TP) fluorescent off-on probe has been developed for detecting tyrosinase activity. High selectivity, sensitivity and biocompatibility enable the probes to successfully image tyrosinase activity in live cells and tissues using TP microscopy.
J. Yoon is grateful for financial support from the National Research foundation of Korea (NRF), which was funded by the Korea government (MSIP) (No. 2012R1A3A2048814). H. M. K. acknowledges a grant from the National Leading Research Lab Program of the NRF, funded by the Korea government (MSIP) (NRF-2019R1A2B5B03100278).