All experiments were conducted either at the LowDosePES endstation of the PM4 beamline (BESSY II, Helmholtz-Zentrum Berlin, Germany) or with our laboratory setup under ultrahigh vacuum (UHV) conditions (base pressure at the LowDosePES endstation 1 • 10 -10 mbar and 5 • 10 -10 mbar at our home system). At the LowDosePES, the clean MoS2 surface was examined with XAS, XPS and ArPES using an angle-resolved time-of-flight detector (ARTOF). This detector offers high efficiency compared to conventional hemispherical analyzers, thus enabling experiments at lower photon flux, mitigating potential radiation damage to phthalocyanines in prolonged experiments with longer radiation exposure times. XAS measurements were carried out in the total electron yield mode measuring the sample current. For energy calibration we used a gold single crystal which was cleaned by repeated cycles of argon ion sputtering and annealing. After each change of the excitation energy, the Au4f7/2 (84.00 eV) binding energy was measured, and consecutive measurements calibrated to this. For photoemission experiments with excitation energies of 900, 300, 230 and 75 eV an energy resolution of 1492, 188, 133 and 69 meV was estimated, respectively. For the ArPES measurements, we utilized a photon energy of 75 eV and chose a detector acceptance angle of 30 degrees to probe with a maximum k∥ value of approximately 1.16 Å⁻¹. We chose this photon energy as for a good compromise between intensity and reciprocal space resolution and extension. The calculated distances in the reciprocal space from Γ to K is 1.325 Å⁻¹ and 1.147 Å⁻¹ from Γ to M for the hexagonal MoS2 lattice with a lattice constant of 3.162 Å. It was possible to probe the full Brillouin zone at this energy, provided the sample is titled such that the gamma point ends up at the edge of the detector field of view (see Figure , Supporting Information). Using the kx versus ky momentum map, we traced the path through reciprocal space from K to Γ to M and plot the energy dispersion diagrams (see red lines in Figures and).