Charged Porous Polymers using a Solid C-O Cross-Coupling Reaction

Pengfei Zhang, Xueguang Jiang, Shun Wan, Sheng Dai

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Herein, we report a green, fast, efficient mechanochemical strategy for charged porous polymers (CPPs). A cationic CPP with basic anions and an anionic CPP with Li+ cations were fabricated by solid grinding under solvent-free conditions. Compared with solution-based synthesis, mechanochemical grinding can shorten the reaction time from dozens of hours to several minutes (60-90 min) to form polymers possessing a high molecular mass and low polydispersity. During the construction of CPPs, a Pd-catalyzed solid polycondensation based on unactivated organic linkers was introduced. In particular, CPPs with basic phenolic or proline anions showed good activity and stability in SO2 capture, and Li+-functionalized CPPs can be post-modified to CPPs with other metal ions by ion exchange, highlighting the tailorable feature of ionic-modified CPPs. A versatile and clean mechanochemical strategy has been developed for the dibenzodioxane-forming reaction toward charged porous polymers (see scheme). Charged polymers with cationic or anionic skeletons were synthesized in a fast (60-90 min) and solvent-free manner. The intrinsically charged character makes these polymers ideal matrices for introducing various cations or anions with specific tasks (e.g., basic anions for SO2 capture or metal ions).

Original languageEnglish
Pages (from-to)12866-12870
Number of pages5
JournalChemistry - A European Journal
Volume21
Issue number37
DOIs
StatePublished - Sep 1 2015

Keywords

  • acid gas capture
  • mechanochemistry
  • microporous materials
  • porous polyelectrolytes
  • porous polymers

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