Figure 2.

a. Ru-based nanozymes catalyze the deprotection of non-fluorescent pro-Rho to green fluorescent Rhodamine. b. Kinetic studies of nanozymes (200 nM) converting pro-Rho (10 μM) to fluorescent product in phosphate buffered saline (PBS, pH 7.4) solution at 37 °C. The average fluorescence was measured from three independent replicates. Nnanozymes (NZ1, NZ2 and NZ3) had similar catalytic activity. c. Rate of activation of pro-Rho by nanozymes in PBS solution based on the fluorescent calibration curve of Rhodamine (Figure S9).