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Carbon nanomembranes from aromatic carboxylate precursors

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Dementyev_2020_ChemPhysChem_CC.pdf (1.719Mb)
Date
14/04/2020
Author
Dementyev, Petr
Naberezhnyi, Daniil
Westphal, Michael
Buck, Manfred
Golzhauser, Armin
Keywords
Amorphous materials
Membranes
Self-assembly
Thin films
Vapor permeation
QD Chemistry
T-NDAS
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Abstract
Self-assembled monolayers (SAMs) serve as convenient platform for fabricating carbon nanomembranes (CNMs) of extended lateral dimensions. Highly porous CNMs are emerging as interesting materials for membrane technologies as they exhibit selectivity for water permeation and, owing to their reduced dimensionality, promise increased energy efficiency compared to established systems. In the present study terphenylcarboxylate SAMs, prepared on silver underpotential deposited on Au and irradiated by 100 eV electrons, were successfully converted into free-standing CNMs. Infrared and X-ray photoelectron spectroscopy reveal pronounced chemical changes both of the anchoring carboxylate moiety and the aromatic backbone upon electron irradiation. Permeation studies showed high specificity for water as demonstrated by the separation from tetrahydrofuran. Compared to thiols on gold, the standard CNM precursor system, the carboxylic acid based SAM exhibits equivalent characteristics. This suggests that electron-induced carbonization is insensitive to the particular choice of the anchor moiety and, therefore, the choice of precursor molecules can be extended to the versatile class of aromatic carboxylic acids.
Citation
Dementyev , P , Naberezhnyi , D , Westphal , M , Buck , M & Golzhauser , A 2020 , ' Carbon nanomembranes from aromatic carboxylate precursors ' , ChemPhysChem , vol. Early View . https://doi.org/10.1002/cphc.202000150
Publication
ChemPhysChem
Status
Peer reviewed
DOI
https://doi.org/10.1002/cphc.202000150
ISSN
1439-4235
Type
Journal article
Rights
Copyright © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Description
P. D. thanks the “Fonds der Chemischen Industrie” for a Liebig Fellowship, the Royal Society of Chemistry for a Researcher Mobility Grant, and the “Max-Buchner-Forschungsstiftung” for a Max-Buchner Fellowship. This work was in part financed by the German Federal Ministry for Education and Research (BMBF) within the bilateral German-Greek Research and Innovation Cooperation, project Caerus 03XP0155 A.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/19864

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