Defect engineering of porous aromatic frameworks via end capping improves dioxane removal from water

Relationships Between Defectivity and Porosity in High Surface Area Porous Aromatic Frameworks**

“…Monomer impurities may represent an unappreciated source of defects. Finally, these data corroborate the approach recently published by Dichtel and co‐workers that establishes defect engineering/monomer capping as a potential method for controlling porosity and material performance [11] . Copolymerization of monomers at different ratios is one of the first reported strategies for controlling PAF porosity but is not widely established in the context of defect engineering [51,57] .…”

“…Their high porosity and broad‐spectrum chemical stability make them attractive candidates to address outstanding technological challenges where material microporosity and stability govern performance. Porous aromatic frameworks are under investigation for applications such as advanced membrane technologies, [5–10] gas sorbents, [11–17] energy storage, [18–23] sensing, [24–27] and catalysis [28–33] . Their performance in these applications is often impacted by their porosity [34] .…”

Relationships Between Defectivity and Porosity in High Surface Area Porous Aromatic Frameworks**

“…Finally, these data corroborate the approach recently published by Dichtel and coworkers that establishes defect engineering/monomer capping as a potential method for controlling porosity and material performance. [11] Copolymerization of monomers at different ratios is one of the first reported strategies for controlling PAF porosity but is not widely established in the context of defect engineering. [51,57] The Br 4 /Br 3 H copolymers showed predictable changes in SA BET and micropore volume based on the monomer feed ratio, suggesting that further tuning of material properties can be achieved through copolymerization approaches.…”

“…Their high porosity and broad-spectrum chemical stability make them attractive candidates to address outstanding technological challenges where material microporosity and stability govern performance. Porous aromatic frameworks are under investigation for applications such as advanced membrane technologies, [5][6][7][8][9][10] gas sorbents, [11][12][13][14][15][16][17] energy storage, [18][19][20][21][22][23] sensing, [24][25][26][27] and catalysis. [28][29][30][31][32][33] Their performance in these applications is often impacted by their porosity.…”

“…[44] Recently, Dichtel and coworkers demonstrated that defect engineering through monomer capping can be used to tune microporosity in PAFs, an effect also seen in COFs. [11,45] Collectively, these studies indicate that defects may play an important role regulating PAF properties yet quantitative relationships connecting defects to synthetic approach and porosity in PAFs remain rare.…”