Polymeric Catalyst with Discrete Distributed Active Centers for Regulating Backbone Structure of Poly(propylene carbonate)
Hao Zhou , Shunjie Liu , Pei Chen , Liehang Yang , Chunwei Zhuo , Fengxiang Gao , Xuan Pang , Xuesi Chen , Xianhong Wang
Chinese Journal of Chemistry ›› 2024, Vol. 42 ›› Issue (21) : 2599 -2606.
Polymeric Catalyst with Discrete Distributed Active Centers for Regulating Backbone Structure of Poly(propylene carbonate)
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.
Carbon dioxide / Ring-opening copolymerization / Polymeric aluminum porphyrin catalyst / Synergy effect / Copolymers / Homogeneous catalysis
2024 SIOC, CAS, Shanghai, & WILEY-VCH GmbH
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