Tunable Surface Area, Porosity and Function in Conjugated Microporous Polymers

Jie Chen, Wei Yan, Esther Townsend, Jiangtao Feng, Long Pan, Veronica Del Angel Hernandez, Charl FJ Faul

Research output: Contribution to journalArticle (Academic Journal)

7 Citations (Scopus)
105 Downloads (Pure)

Abstract

Simple inorganic salts are used to tune N‐containing conjugated microporous polymers (CMPs) synthesized by Buchwald–Hartwig (BH) cross‐coupling reactions. Poly(triphenylamine), PTPA, initially shows a broad distribution of micropores, mesopores, and macropores. However, the addition of inorganic salts affects all porous network properties significantly: the pore size distribution is narrowed to the microporous range only, mimicking COFs and MOFs; the BET surface area is radically improved from 58 m2 g−1 to 1152 m2 g−1; and variations of the anion and cation sizes are used to fine‐tune the surface area of PTPA, with the surface area showing a gradual decrease with an increase in the ionic radius of salts. The effect of the salt on the physical properties of the polymer is attributed to adjusting and optimizing the Hansen solubility parameters (HSPs) of solvents for the growing polymer, and named the Beijing–Xi'an Jiaotong (BXJ) method.
Original languageEnglish
Pages (from-to)11715-11719
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number34
Early online date17 Jun 2019
DOIs
Publication statusPublished - 19 Aug 2019

Keywords

  • conjugated microporous polymer
  • metal-catalysed cross-couplings
  • tuneable properties
  • Hansen Solubility Parameters

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