Figure displays the real and imaginary parts of the dielectric constant for monolayers C 60 , C 58 B 1 N 1 , and C 54 B 3 N 3 . The real part, which indicates electronic polarizability, can be determined using the Clausius-Mossotti relation . It provides insights into the material's electronic polarizability. The static dielectric function, or optical dielectric constant, refers to the real part at zero photon energy. The imaginary part corresponds to the inter-band transition of electrons from the valence to the conduction band. Figure (a,b,c) shows that the static dielectric constant is approximately 4.07, 4.24, and 3.88 eV for in-plane (E||X) and around 2.55, 2.64, and 2.49 eV for out-of-plane (E ⊥ Z) polarization. This data indicates anisotropic optical properties, with greater electronic polarization along the in-plane direction. Notably, a negative value around 4.25 (± 0.50) eV at E||X for all three qHP systems suggests metallic characteristics at this photon energy, but it does not show any metallic character along E ⊥ Z polarization. In contrast, this metallic character completely vanished in the qTPs of C 58 B 1 N 1 and C 54 B 3 N 3 shows no negative values neither in E||X nor in E ⊥ Z polarization . Significant peaks (maxima) occur at 6.58 Figure (a) shows the frequency-dependent absorption coefficient averaged across three electric field orientations, which is crucial for assessing optical properties in optoelectronic applications. The absorption coefficient (α(ω)) measures light intensity attenuation over a unit distance as an electromagnetic wave propagates through a medium. It is directly related to the imaginary part of the dielectric function and the extinction coefficient, as shown in Figure ). A lower absorption coefficient indicates less light absorption by the material. For all three systems, the first absorption peak appears between 1.0-2.0 eV, with the highest peak around 5.1 and 11.20 eV in the UV region. The absorption coefficient is minimal at lower energies (∼ 1.5 eV). The high (α(ω)) value of ∼ 4.11x10 5 cm -1 potential use of C 60 , C 58 B 1 N 1 , and C 54 B 3 N 3 monolayers as UV absorbers. The energy loss function L(ω) is depicted in Figure . Multiple distinct peaks are evident at approximately 1.6 eV, 6.02 eV, and 11.40 eV for the electric field aligned parallel to the single layer of all sheets. These peaks correspond to the (π + σ )( plasmon excitation. Conversely, there are no noticeable peaks at energy levels below 0.9 eV for parallel or perpendicular polarizations. A few faint peaks are observed within the energy range of 1.0 eV to 1.5 eV, attributed to subtle resonances of incident light. For the proposed monolayers, the plasmonic peaks experience a shift toward higher energies and display increased sharpness (blueshift) when the material reflects frequencies of electromagnetic radiation below the plasma frequency. This phenomenon occurs because the electrons within the substance effectively shield the electric field of the radiation. Conversely, if electromagnetic radiation surpasses the plasma frequency, it is transferred through the material when the electrons within it cannot shield it .