PMID- 32760988 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200818 IS - 1477-9234 (Electronic) IS - 1477-9226 (Linking) VI - 49 IP - 32 DP - 2020 Aug 18 TI - Metalated-bipyridine-based porous hybrid polymers with POSS-derived Si-OH groups for synergistic catalytic CO(2) fixation. PG - 11300-11309 LID - 10.1039/d0dt01667e [doi] AB - Herein, we construct a new series of N-heterocyclic ligand bipyridine-based porous hybrid polymers (denoted Bpy-PHPs) from the Heck reaction of a rigid building unit octavinylsilsesquioxane (VPOSS) and 5,5'-dibromo-2,2'-bipyridine. Surprisingly, the typical sample Bpy-PHP-4 was found to be a metal-/halogen-free heterogeneous catalyst in the cycloaddition reaction of CO2 with a few epoxides under atmospheric pressure. After coordination with ZnBr2, the resultant ZnBr2@Bpy-PHP-4 afforded largely enhanced heterogeneous catalytic activities upon the conversion of carbon dioxide (CO2) and various epoxides into cyclic carbonates without using any co-catalysts under mild conditions. The moderate catalytic activities of Bpy-PHP-4 may be due to the presence of hydrogen bond donors (HBDs), i.e., polyhedral oligomeric silsesquioxane (POSS)-derived Si-OH groups and N active sites from Bpy linkers. In comparison, the high catalytic efficiency of ZnBr2@Bpy-PHP-4 should be attributed to the synergistic catalysis of Si-OH groups, N active atoms, and Bpy-coordinated ZnBr2. Moreover, the catalyst ZnBr2@Bpy-PHP-4 can be easily recovered and reused ten times without any significant loss of catalytic activities. This work affords an efficient metal-based porous hybrid polymer heterogeneous catalyst for the cycloaddition reaction of CO2 and epoxides under mild and co-catalyst-free conditions. FAU - Zhang, Yadong AU - Zhang Y AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Luo, Niu AU - Luo N AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Xu, Jingyu AU - Xu J AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Liu, Ke AU - Liu K AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Zhang, Shengqi AU - Zhang S AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Xu, Qinglin AU - Xu Q AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Huang, Rui AU - Huang R AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Long, Zhouyang AU - Long Z AUID- ORCID: 0000-0002-5520-6263 AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Tong, Minman AU - Tong M AUID- ORCID: 0000-0002-9357-5684 AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. FAU - Chen, Guojian AU - Chen G AUID- ORCID: 0000-0003-1773-8741 AD - School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China. gjchen@jsnu.edu.cn. LA - eng PT - Journal Article PL - England TA - Dalton Trans JT - Dalton transactions (Cambridge, England : 2003) JID - 101176026 SB - IM EDAT- 2020/08/08 06:00 MHDA- 2020/08/08 06:01 CRDT- 2020/08/08 06:00 PHST- 2020/08/08 06:00 [pubmed] PHST- 2020/08/08 06:01 [medline] PHST- 2020/08/08 06:00 [entrez] AID - 10.1039/d0dt01667e [doi] PST - ppublish SO - Dalton Trans. 2020 Aug 18;49(32):11300-11309. doi: 10.1039/d0dt01667e.