Figure 5.

a) Polarization plots of 2D CCP‐Th (red line), 2D CCP‐BD (blue line), and 2D C=N COF‐B (black line) with and without light irradiation. b) Photocurrent–time plots for 2D CCP‐Th (red line), 2D CCP‐BD (blue line), and 2D C=N COF‐B (black line) at 0.3 V versus RHE. On: illumination on; off: illumination off. c) GFN1‐xTB calculated binding energies (eV) of adsorbed species at seven possible active sites of 2D CCP‐Th. d) Schematic illustration of the photoelectrochemical H₂ evolution reactions on the reactive CN substitutions on the vinylene linkage and bithiophene units of 2D CCP‐Th under visible light irradiation.