New Hyper-Crosslinked Partly Conjugated Networks with Tunable Composition by Spontaneous Polymerization of Ethynylpyridines with Bis(bromomethyl)arenes: Synthesis, Spectral Properties, and Activity in CO2 Capture
Spontaneous catalyst‐free polymerizations of 4‐ethynylpyridine (4EPy) and 2‐ethynylpyridine with bifunctional quaternizing agents (QAs) of bis(bromomethyl)arenes provide highly crosslinked polymer networks in high yields. 13C cross‐polarization magic‐angle spinning (CP/MAS) NMR, Fourier transform IR...
Saved in:
Published in | Macromolecular chemistry and physics Vol. 214; no. 24; pp. 2856 - 2866 |
---|---|
Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
Blackwell Publishing Ltd
01.12.2013
Wiley |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Spontaneous catalyst‐free polymerizations of 4‐ethynylpyridine (4EPy) and 2‐ethynylpyridine with bifunctional quaternizing agents (QAs) of bis(bromomethyl)arenes provide highly crosslinked polymer networks in high yields. 13C cross‐polarization magic‐angle spinning (CP/MAS) NMR, Fourier transform IR (FTIR) and diffuse reflectance vis spectroscopy confirm that these networks consist of polyacetylene main chains substituted with pyridyl and pyridiniumyl groups, the latter interconnected with –CH2(arylene)CH2– linkers. Variation of the 4EPy/QA ratio in the polymerization feed results in networks with different extents of crosslinking and pyridyl/pyridiniumyl ratio (N/N+ from 0 to 1.32). Networks exhibit photoluminescence and are also moderately active in CO2 capture (the highest uptake is 16.4 cm3 (STP) g−1 at 293 K and an equilibrium CO2 pressure of 750 Torr).
Polymerizations of 4‐, and 2‐ethynylpyridine with bifunctional quaternizing agents of bis(bromomethyl)arenes provide highly crosslinked networks with polyacetylene main chains substituted by pyridyl and pyridiniumyl groups and crosslinked via ‐CH2(arylene)CH2‐ linkers. Depending on the synthesis conditions, the networks differ in crosslinking extent and pyridyl/pyridiniumyl ratio. The networks exhibit photoluminescence and CO2 capture. |
---|---|
Bibliography: | ark:/67375/WNG-16CLS9XF-L Science Foundation of Charles University - No. 574612 B-CH Czech Science Foundation - No. P108/11/1661 ArticleID:MACP201300540 istex:3878417C14564E3833CB284AB7676C46EB125FFA Ministry of Education of the Czech Republic - No. MSM0021620857 |
ISSN: | 1022-1352 1521-3935 |
DOI: | 10.1002/macp.201300540 |