A two-dimensional conjugated aromatic polymer via C-C coupling reaction

Wei Liu, Xin Luo, Yang Bao, Yan Peng Liu, Guo Hong Ning, Ibrahim Abdelwahab, Linjun Li, Chang Tai Nai, Zhi Gang Hu, Dan Zhao, Bin Liu, Su Ying Quek, Kian Ping Loh

Research output: Journal article publicationJournal articleAcademic researchpeer-review

160 Citations (Scopus)

Abstract

The fabrication of crystalline 2D conjugated polymers with well-defined repeating units and in-built porosity presents a significant challenge to synthetic chemists. Yet they present an appealing target because of their desirable physical and electronic properties. Here we report the preparation of a 2D conjugated aromatic polymer synthesized via C-C coupling reactions between tetrabromopolyaromatic monomers. Pre-arranged monomers in the bulk crystal undergo C-C coupling driven by endogenous solid-state polymerization to produce a crystalline polymer, which can be mechanically exfoliated into micrometre-sized lamellar sheets with a thickness of 1 nm. Isothermal gas-sorption measurements of the bulk material reveal a dominant pore size of ∼0.6 nm, which indicates uniform open channels from the eclipsed stacking of the sheets. When employed as an organic anode in an ambient-temperature sodium cell, the material allows a fast charge/discharge of sodium ions, with impressive reversible capacity, rate capability and stability metrics.
Original languageEnglish
Pages (from-to)563-570
Number of pages8
JournalNature Chemistry
Volume9
Issue number6
DOIs
Publication statusPublished - 1 Jun 2017
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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