Chemical Research in Chinese Universities ›› 2024, Vol. 40 ›› Issue (5): 856-862.doi: 10.1007/s40242-024-4094-5

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Well-controlled Organocatalytic Ring-opening Polymerization of Seven-membered Cyclic Carbonates with Cyclohexyl Fusion

ZHANG Wei1, SHAN Si-Yi2, DAI Jiang2, CAI Zhongzheng2, ZHU Jian-Bo2   

  1. 1. Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, P. R. China;
    2. National Engineering Laboratory of Eco-friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
  • Received:2024-04-15 Online:2024-10-01 Published:2024-09-26
  • Contact: CAI Zhongzheng,zzcai@scu.edu.cn;ZHU Jian-Bo,jbzhu@scu.edu.cn E-mail:zzcai@scu.edu.cn;jbzhu@scu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos.22071163,22371194,and 22301197),and the Fundamental Research Funds from Sichuan University,China (No.2023SCUNL103).

Abstract: Developing green and well-controlled polymerization methods is of great significance for the preparation of biomedical polymer materials. In this contribution, an efficient organocatalytic ring-opening polymerization (ROP) of a class of seven-membered cyclic carbonates (T6DO, T6HDO, C6DO, C6HDO) containing cis- or trans-cyclohexane structure was established. Organic catalyst 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) promoted living polymerization of these cyclic carbonates to deliver polycarbonate and block copolymer products with predictable molecular weights and narrow dispersity. The robust TBD-mediated ROP at 90 ℃ showcased turnover frequency (TOF) up to 103 h-1. The resulting amorphous polycarbonates displayed good thermal stability.

Key words: CO2, Organic catalyst, Living ring-opening polymerization, Aliphatic polycarbonate