Abstract
Synthetic strategy has become a powerful tool to access POPs with desired and diverse functionalities. The inside cover picture displays one‐pot Ullmann coupling reaction to synthesize a series of microporous polymers with rich N‐sites, named FJU‐POP‐n, wherein the low‐cost and non‐toxic Cu(acac)2 and environmental‐friendly glycerol are employed as catalyst and solvent, respectively. Among these, FJU‐POP‐4 with abundant N‐functional sites and suitable pore size exhibits ultra‐high selective separation for C2H2/CH4 (307.1, 50 : 50) at ambient conditions, the highest among the reported MOFs and POPs with nitrogen‐sites as only functional species. Dynamic fixed bed breakthrough and regeneration experiments confirm structural stability and reproducibility, indicating their promising application in selective separation. More details are discussed in the article by Zhang et al. on page 514—520.image
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