Abstract: In this paper, the target porous organic cages(POCs) RCC3 was simply and efficiently synthesized through a two-step reaction, which was used as a ligand to coordinate with $ CuBr_{2} $ to construct a POCs complex RCC3@Cu. The X-ray diffraction(XRD) and electrospray ionization mass spectrometry(ESI-MS) were used to characterize the structure and composition of RCC3@Cu. It was confirmed that RCC3@Cu was a copper complex with stable coordination structure and was expected to be used to mediate atom transfer radical polymerization(ATRP). RCC3 was employed as a ligand for ATRP of methyl methacrylate(MMA), the conversion rate would achieve up to 80% in 2 h, and the polymer dispersity index(PDI) was 1.15; the final conversion rate could reach 98.5%, and the PDI was 1.16. The polymerization kinetics showed that RCC3-mediated ATRP was approximate to the first-order reaction kinetics, which accorded with the characteristics of living polymerization. Monomer versatility of RCC3 was further demonstrated by the ATRP of various monomers. The results showed that RCC3 ligand can be effectively applied to ATRP catalysis and it is worth further research.
Keywords: molecular cages; porous organic cages(POCs); atom transfer radical polymerization(AT-RP); catalyst; living polymerization
合肥工业大学学报自科版