Converting CO_(2) into valuable chemicals is an effective means to alleviate environmental pressure and the depletion of oil resources.Among them,polymers derived from the copolymerization of PO and CO_(2) have been w...Converting CO_(2) into valuable chemicals is an effective means to alleviate environmental pressure and the depletion of oil resources.Among them,polymers derived from the copolymerization of PO and CO_(2) have been widely studied because of their excellent properties.To meet the expansion of the application range of CO_(2)-based polymers,regulation of the CU in the polymer is imperative.Based on the understanding of the relationship between catalyst synergy and structure,we designed a new generation of polyester-based polymeric catalysts APEPC-R and RPEPC-N with discretely distributed active centers to achieve the synthesis of CO_(2)-based polymers with regulated CU(from 50%to 90%).The discrete arrangement of catalyst active centers was demonstrated by 1H NMR and UV-vis characterization.Benefiting from multi-site synergy,high molecular weight(M_(n)>100 kg/mol)CO_(2)-based copolymers with CU among 50%—90%were successfully synthesized and their properties were firstly investigated.This work not only contributes to enriching the scope of the application of CO_(2)-based copolymers but also provides a new platform for the development of a new generation of catalysts.展开更多
基金financial support from the National Key Research and Development Program of China(No.2021YFD1700700)National Natural Science Foundation of China(Nos.51988102,22271275,22101277)Youth Innovation Promotion Association of Chinese Academy of Sciences(2023236).
文摘Converting CO_(2) into valuable chemicals is an effective means to alleviate environmental pressure and the depletion of oil resources.Among them,polymers derived from the copolymerization of PO and CO_(2) have been widely studied because of their excellent properties.To meet the expansion of the application range of CO_(2)-based polymers,regulation of the CU in the polymer is imperative.Based on the understanding of the relationship between catalyst synergy and structure,we designed a new generation of polyester-based polymeric catalysts APEPC-R and RPEPC-N with discretely distributed active centers to achieve the synthesis of CO_(2)-based polymers with regulated CU(from 50%to 90%).The discrete arrangement of catalyst active centers was demonstrated by 1H NMR and UV-vis characterization.Benefiting from multi-site synergy,high molecular weight(M_(n)>100 kg/mol)CO_(2)-based copolymers with CU among 50%—90%were successfully synthesized and their properties were firstly investigated.This work not only contributes to enriching the scope of the application of CO_(2)-based copolymers but also provides a new platform for the development of a new generation of catalysts.
