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Verfasst von:Lange, Ralph Z. [VerfasserIn]   i
 Synnatschke, Kevin [VerfasserIn]   i
 Qi, Haoyuan [VerfasserIn]   i
 Huber, Niklas [VerfasserIn]   i
 Hofer, Gregor [VerfasserIn]   i
 Liang, Baokun [VerfasserIn]   i
 Huck, Christian [VerfasserIn]   i
 Pucci, Annemarie [VerfasserIn]   i
 Kaiser, Ute [VerfasserIn]   i
 Backes, Claudia [VerfasserIn]   i
 Schlüter, A. Dieter [VerfasserIn]   i
Titel:Enriching and quantifying porous single layer 2D polymers by exfoliation of chemically modified van der Waals crystals
Verf.angabe:Ralph Z. Lange, Kevin Synnatschke, Haoyuan Qi, Niklas Huber, Gregor Hofer, Baokun Liang, Christian Huck, Annemarie Pucci, Ute Kaiser, Claudia Backes, and A. Dieter Schlüter
Jahr:2020
Jahr des Originals:2019
Umfang:13 S.
Fussnoten:First published: 10 December 2019 ; Gesehen am 23.04.2020
Titel Quelle:Enthalten in: Angewandte Chemie / International edition
Ort Quelle:Weinheim : Wiley-VCH, 1962
Jahr Quelle:2020
Band/Heft Quelle:59(2020), 14, Seite 5683-5695
ISSN Quelle:1521-3773
Abstract:2D polymer sheets with six positively charged pyrylium groups at each pore edge in a stacked single crystal can be transformed into a 2D polymer with six pyridines per pore by exposure to gaseous ammonia. This reaction furnishes still a crystalline material with tunable protonation degree at regular nano-sized pores promising as separation membrane. The exfoliation is compared for both 2D polymers with the latter being superior. Its liquid phase exfoliation yields nanosheet dispersions, which can be size-selected using centrifugation cascades. Monolayer contents of ≈30 % are achieved with ≈130 nm sized sheets in mg quantities, corresponding to tens of trillions of monolayers. Quantification of nanosheet sizes, layer number and mass shows that this exfoliation is comparable to graphite. Thus, we expect that recent advances in exfoliation of graphite or inorganic crystals (e.g. scale-up, printing etc.) can be directly applied to this 2D polymer as well as to covalent organic frameworks.
DOI:doi:10.1002/anie.201912705
URL:kostenfrei: Volltext ; Verlag: https://doi.org/10.1002/anie.201912705
 kostenfrei: Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201912705
 DOI: https://doi.org/10.1002/anie.201912705
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:layered compounds
 liquid phase exfoliation
 monolayers
 polymers
 post-polymerization modification
K10plus-PPN:1695805615
Verknüpfungen:→ Zeitschrift
 
 
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