The DOS spectra of isolated E-Fc and S-Fc in Figure The DOS analysis reveals distinct electronic contributions across different energy regions, highlighting the nature of bonding and interactions within the system. The DOS spectra for Fc/Au(111) at adsorption include six bands at approximately -9 eV, -5.5 eV, -2.5 eV, ~0 eV, 2.5 eV, and 5 eV. While the spectral band positions remain largely unchanged from those of isolated Fc, the band intensities are notably reduced upon adsorption. This suggests that the energy levels of Fc's electronic states are not significantly modified during interaction with the Au(111) surface.