Figure 10

CW X-band EPR spectra at 298 K of HGA (black lines, acquired at 9.87 GHz microwave frequency, 0.1 mT modulation amplitude, 5 mW microwave power) with best-fit simulations (red lines): (a) in the presence of NaOH when the solution is black; (b) in the presence of NaOH when the solution is brown.