in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry allowed. this catalyst enabled the development of one-pot, two-step, mild and eco-friendly syntheses of diversely decorated 1,4-disubstituted 1,2,3-triazole. the catalyst showed high catalytic activity, regioselectivity and recycled five successful times. in another attempt, the vasorelaxing effect of products studied. we sugested that triazole derivatives may provide valuable therapeutic intervention for the treatment of hypertension. in order to widen the application of this heterogeneous nanocatalyst in organic synthesis, we applied it in different reactions for preparion of diverse range of chemical and biological compounds such as 5-substituted 1h-tetrazoles, 1-substituted-1h-1,2,3,4-tetrazoles, 2,4,5-triaryl-1h-imidazoles and pharmacologically active benzimidazoles. beside the intention to find new applications for metalo-terpyridine based heterogeneous systems, we investigated the synthesis of a polymer with terpyridine units in the side chain for more sophisticated applications. addition of pd(oac)2 to this polymer generated an insoluble polymer containing terpyridine-palladium complexes (pdktps). after complete characterization of this system, its application as a phosphine-free catalyst in c-c and c-p coupling reactions surveyed. in continue of our study, the ?-aminophosphonates and ?-phosphonomalonates synthesized via multi-component reaction using iron-doped single walled carbon nanotubes (fe/swcnts) as an efficient, eco-friendly and reusable heterogeneous catalyst. finally, tin oxide nanoparticles (np-sno2) as one of the most active and reusable catalysts applied in the knoevenagel condensation. to reduce the time required to perform the experiments, and increases the reproducibility of results, the optimal conditions for nanoparticles synthesis were determined by using taguchi robust design method.

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