In contrast, the weak oscillation of 0.001 observed in the near-infrared (980 nm to 1000 nm) range indicates a subtle but measurable interaction with lower-energy photons, which may arise from extended vibrational overtones or weak long-wavelength resonance effects introduced by the platinum doping. While not as visible, the interaction in this spectral range could still contribute to catalytic activity. Such resonance could support electronic communication within the system, albeit indirectly. The combined optical features of platinum-doped phenalene impact charge recombination dynamics and HER efficiency. The strong visible light absorption ensures the generation of abundant charge carriers, while the presence of platinum facilitates rapid charge separation via its catalytic active sites, thereby minimizing charge recombination and enhancing the material's quantum efficiency. This ensures that the majority of the photogenerated electrons are utilized in the HER pathway.