<p dir="ltr">This thesis highlights the important role of linker design, through both premodification and post-synthetic strategies, in creating highly efficient and stable COFbased catalysts for catalytic organic transformations. The successful development of cyclometallated Pd catalysts, β-keto-enamine-based photocatalysts with polycyclic aliphatic linkers, and integrated copper/perylene dual catalytic systems exemplifies the versatility and potential of linker engineering within the COF platform. The dataset record including the characterizations of thesis such as PXRD data, NMR spectra, IR spectra, BET adsorption.</p>