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

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...

Full description

Saved in:
Bibliographic Details
Published in:Nature chemistry 2017-06, Vol.9 (6), p.563-570
Main Authors: Liu, Wei, Luo, Xin, Bao, Yang, Liu, Yan Peng, Ning, Guo-Hong, Abdelwahab, Ibrahim, Li, Linjun, Nai, Chang Tai, Hu, Zhi Gang, Zhao, Dan, Liu, Bin, Quek, Su Ying, Loh, Kian Ping
Format: Article
Language:English
Subjects:
Bulk polymerization
Charge materials
Chemical reactions
Chemical synthesis
Chemists
Coupling
Crystal structure
Electronic properties
Monomers
Polymerization
Polymers
Pore size
Porosity
Sheets
Sodium
Sorption
Temperature effects
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1755-4330
1755-4349
DOI:10.1038/nchem.2696