Efficient Polymerization and Selective Depolymerization of Poly(cyclopentene carbonate) Mediated Solely by Heterometallic Rare-Earth(III)/Zinc(II) Complexes
Ziyue Deng, Dan Yuan（袁丹）*,Yingming Yao（姚英明）*
State and Local Joint Engineering Laboratory for Novel Functional Department Polymeric Materials, Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science,Dushu Lake Campus, Soochow University, Suzhou 215123,People’s Republic of China
Macromolecules 2024, 57, 21, 10041–10052
Abstract: Poly(cyclopentenyl carbonate) (PCPC) is a recyclable polymer with great potential applications. However, the selective preparation of PCPC from cyclopentene oxide (CPO) and CO2 copolymerization and the chemical recycling of PCPC back to the original monomer CPO are of great challenge. In this work, it was found that the heterometallic rare-earth metal(III)/Zn(II) complexes (RE(III)-Zn(II) complexes) supported by phenylenediamine-bridged triphenols could serve as highly active catalysts for the copolymerization of CPO and CO2 to give pure PCPC. Remarkably, the same complexes alone could also promote the selective depolymerization of PCPC to CPO only by simply raising the reaction temperature up to ca. 160 °C. The copolymerization and depolymerization mechanisms were also proposed.
Article information: //pubs.acs.org/doi/10.1021/acs.macromol.4c02086
