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dc.contributor.author
Synnatschke, Kevin
dc.contributor.author
Qi, Haoyuan
dc.contributor.author
Huber, Niklas
dc.contributor.author
Hofer, Gregor
dc.contributor.author
Liang, Baokun
dc.contributor.author
Huck, Christian
dc.contributor.author
Pucci, Annemarie
dc.contributor.author
Kaiser, Ute
dc.contributor.author
Backes, Claudia
dc.contributor.author
Schlüter, A. Dieter
dc.date.accessioned
2020-03-23T09:31:55Z
dc.date.available
2020-02-05T03:15:36Z
dc.date.available
2020-02-10T08:55:45Z
dc.date.available
2020-03-23T09:31:55Z
dc.date.issued
2020-03-27
dc.identifier.issn
1433-7851
dc.identifier.issn
1521-3773
dc.identifier.issn
0570-0833
dc.identifier.other
10.1002/anie.201912705
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/397035
dc.identifier.doi
10.3929/ethz-b-000397035
dc.description.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.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Layered compounds
en_US
dc.subject
Liquid phase exfoliation
en_US
dc.subject
Monolayers
en_US
dc.subject
Polymers
en_US
dc.subject
Post-polymerization modification
en_US
dc.title
Enriching and Quantifying Porous Single Layer 2D Polymers by Exfoliation of Chemically Modified van der Waals Crystals
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2019-12-10
ethz.journal.title
Angewandte Chemie. International Edition
ethz.journal.volume
59
en_US
ethz.journal.issue
14
en_US
ethz.journal.abbreviated
Angew. Chem. Int. Ed.
ethz.pages.start
5683
en_US
ethz.pages.end
5695
en_US
ethz.size
13 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Weinheim
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-02-05T03:15:39Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-03-23T09:32:06Z
ethz.rosetta.lastUpdated
2020-03-23T09:32:06Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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