▎ 摘　　要

A novel Suzuki-Miyaura (S-M) cross-coupling catalyst (rGO-8 C-TPP-Pd) was prepared by grafting organopalladium complexes with long and flexible chains onto the surface of reduced graphene oxide (rGO) by carboncarbon covalent bonding. The catalyst was characterized by FTIR, Raman, UV-Vis, TGA, SEM and nitrogen adsorption techniques, respectively. rGO-8 C-TPP-Pd has been used in a variety of S-M coupling reactions. The results showed that it had excellent catalytic activity for various substrates with different substituent groups or substituent positions in ethanol/water mixed solvent at room temperature. Under the optimized reaction conditions, the coupling reaction yield of 4-methyl biphenyl was more than 98 % with iodobenzene and p-tolylbonoric acid as substrates. Even if rGO-8 C-TPP-Pd was recycled for 10 times, the product yield decreased by only 10.4 %, and the chemical structure of the catalyst was basically unchanged. This novel catalytic system provides a new strategy for the design and preparation of supported catalysts.