Polymeric Catalyst with Discrete Distributed Active Centers for Regulating Backbone Structure of Poly(propylene carbonate)  

作　　者：Hao Zhou Shunjie Liu Pei Chen Liehang Yang Chunwei Zhuo Fengxiang Gao Xuan Pang Xuesi Chen Xianhong Wang 

机构地区：[1]School of Applied Chemistry and Engineering,University of Science and Technology of China,Anhui,Hefei,230026 China [2]Key Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,Jilin,130022 China

出　　处：《Chinese Journal of Chemistry》2024年第21期2599-2606,共8页中国化学（英文版）

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).

摘　　要：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.

关 键 词：Carbon dioxide Ring-opening copolymerization Polymeric aluminum porphyrin catalyst Synergy effect COPOLYMERS Homogeneous catalysis 

分 类 号：O63[理学—高分子化学]