In this paper, the heterogeneous nature of an amorphous SiO2 support, the exceptional properties of polyamidoamine dendrimers (PAMAM), and the unique properties of pincer ligands (NNN type) were combined for immobilization of a triazine-derived Cu(II)-NNN pincer complex onto the dendritic nanoparticle supports. All of the prepared samples in each step were fully characterized and compared by several techniques, including FTIR, TGA–DTG, elemental analysis (EA), SEM, and TEM. In this regard, two different methods were applied and used for the synthesis and growth of a PAMAM dendrimer onto the SiO2 support via the divergent synthesis method (without and with the catalyst). In the presence of a tetrabutylammonium bromide (TBAB) catalyst, dendritic supports were prepared in a shorter time with better growth. Subsequently, a symmetric and neutral tridentate NNN-pincer ligand derived from trichloro-1 …