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  • Copolymerization of Carbon Dioxide and Cyclohexene Oxide Catalyzed by Chromium Complexes Bearing Semirigid [ONSO]-Type Ligands
  • 来源:刘宾元教授/博士生导师个人网站 2016-06-09
  • Chromium complexes supported by tetradentate dianionic imine-thioether-bridged bis(phenol) ligands were prepared and employed in the synthesis of poly(cyclohexene carbonate) via the copolymerization of CO2 and cyclohexene oxide. The catalytic activity, product selectivity, and kinetic behaviors of these [ONSO]CrIII complexes have been systematically investigated. Results indicate the presence of electron-withdrawing substituents on the ligands to enhance catalytic activity and polymer selectivity. A turnover frequency of 100 h?1 is observed at a temperature of 110 °C, producing polycarbonate with >60% selectivity


  • [来源:中国聚合物网]
  • 了解更多请进入: 刘宾元教授/博士生导师个人网站
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  • · Highly Cis/Trans-Stereoselective (ONSO)CrCl-Catalyzed Ring-Opening Copolymerization of Norbornene Anhydrides and Epoxides,Macromolecules, 2016,DOI: 10.1021/acs.macromol.6b01099
  • · One-Pot Synthesis and Postpolymerization Functionalization of Cyclic Carbonate/Epoxide-Difunctional Polycarbonates Prepared by Regioselective Diepoxide/CO2 Copolymerization,Polym. Chem., 2016, 2016,7, 4453-4457
  • · Chromium complexes containing a tetradentate [OSSO]-type bisphenolate ligand as a novel family of catalysts for the copolymerization of carbon dioxide and 4-vinylcyclohexene oxide
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