A series of poly(ionic liquid)s-supported N-heterocyclic carbene silver complexes (Poly(NHC-Ag/IL)s), poly(ionic liquid)s (PILs) and poly(N-heterocyclic carbene silver complexes) (Poly(NHC-Ag)s) were prepared through radical co-polymerization of N-vinylimidazolium ionic liquids, NHC-Ag monomers and divinylbenzene, respectively. These polymers were applied to catalyze the cycloaddition reaction of carbon dioxide and epoxides without any co-catalyst. Poly(NHC-Ag/IL)s exhibited higher activities than the corresponding PILs and Poly(NHC-Ag)s, which was attributed to the synergistic effect of NHC-Ag and bromide. Furthermore, Poly(NHC-Ag/IL)s could be easily recycled five times without significant loss of catalytic activity. Multi-functional poly(ionic liquid)s-supported N-heterocyclic carbene silver complexes (Poly(NHC-Ag/IL)s) were synthesized by radical co-polymerization of N-vinylimidazolium ionic liquids, NHC-Ag monomers and DVB. Poly(NHC-Ag/IL)s exhibited high activities for cycloaddition reaction of carbon dioxide and epoxides due to their multi-functional groups including Lewis acidic silver and a bromine anion.

中文翻译：

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聚（离子液体）负载的 N-杂环卡宾银配合物用于 CO2 与环氧化物的环加成

一系列聚（离子液体）负载的 N-杂环卡宾银配合物（Poly（NHC-Ag/IL）s）、聚（离子液体）s（PILs）和聚（N-杂环卡宾银配合物）（Poly (NHC-Ag)s) 分别通过 N-乙烯基咪唑鎓离子液体、NHC-Ag 单体和二乙烯基苯的自由基共聚制备。这些聚合物用于在没有任何助催化剂的情况下催化二氧化碳和环氧化物的环加成反应。Poly(NHC-Ag/IL)s 比相应的 PILs 和 Poly(NHC-Ag)s 表现出更高的活性，这归因于 NHC-Ag 和溴化物的协同作用。此外，Poly(NHC-Ag/IL)s 可以很容易地循环使用五次，而不会显着降低催化活性。通过N-乙烯基咪唑鎓离子液体、NHC-Ag单体和DVB的自由基共聚，合成了多功能聚（离子液体）负载的N-杂环卡宾银配合物（Poly（NHC-Ag/IL）s）。聚 (NHC-Ag/IL) 具有多官能团，包括路易斯酸性银和溴阴离子，因此对二氧化碳和环氧化物的环加成反应具有高活性。