首页|Unity Makes Strength:Constructing Polymeric Catalyst for Selective Synthesis of CO2/Epoxide Copolymer
Unity Makes Strength:Constructing Polymeric Catalyst for Selective Synthesis of CO2/Epoxide Copolymer
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
Catalyst design strategies such as bi-functional and di-nuclear catalysts have been developed based on intramolecular interactions,achieving excellent cat-alytic performance.However,most of these catalysts work in a state of disunity.To make progress in this direction,we reckoned that enhancing the neglected intermolecular interactions of these catalysts might be a suitable approach.Herein,we report a strategy of constructing homogeneous polymeric catalysts based on the philosophy of"unity makes strength"to convert the intermolecular interactions into stron-ger intramolecular interactions.We united discrete active centers of aluminum(AI)porphyrin and tertia-ry amine(methyl methacrylate;MMA)via a random copolymerization process into one polymer chain with the subsequent metallization using low-toxic metal AIEt2Cl,to construct polymeric catalysts for selective copolymerization of CO2/epoxide.The spa-tial confinement enabled the multiple interactions among the active centers,which was distinct from the"point-to-point"interacting systems such as bi-nary,bi-functional,or di-nuclear complexes.Through detailed tuning of the multiple synergistic effects between porphyrin/porphyrin(metal synergistic ef-fect)and AI porphyrin/tertiary amine(Lewis pair effect),the optimized polymeric catalyst showed significantly boosted catalytic activity of 4300 h-1,much higher than their mono-nuclear(～0 h-1)and homo-polymeric(750 h1)counterparts.Our present approach for designing polymeric catalysts based on multiple synergistic effects provides a platform for developing highly active catalysts.
NETL
NSTL
万方数据
