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Layer-selective functionalisation in mesoporous double layer via iniferter initiated polymerisation for nanoscale step gradient formation

Stanzel, Mathias ; Kunz, Ulrike ; Andrieu-Brunsen, Annette (2023):
Layer-selective functionalisation in mesoporous double layer via iniferter initiated polymerisation for nanoscale step gradient formation. (Postprint)
In: European Polymer Journal, 156, Elsevier, ISSN 0014-3057,
DOI: 10.26083/tuprints-00021757,
[Article]

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Item Type: Article
Origin: Secondary publication service
Status: Postprint
Title: Layer-selective functionalisation in mesoporous double layer via iniferter initiated polymerisation for nanoscale step gradient formation
Language: English
Abstract:

Functionalisation of technological nanopores and investigation of their transport properties have attracted considerable interest from scientific as from technological point of view, among others due to their potential regarding molecular transport design. Asymmetric design of nanopore structure and functionalisation is expected to trigger increased and directed transport of ionic species. Based on this motivation, we demonstrate a layer-selective polymer functionalisation in a mesoporous double layer thin film to generate nanoscale step gradient architectures with asymmetric charge distribution by taking advantage of co-condensation and polymer modification techniques. Thereby, mesoporous silica and co-condensed mesoporous amino silica thin films are combined to double layered films with a film thickness of 300 – 400 nm in both sequential arrangements, respectively. Iniferter initiated polymerisation is used to selectively functionalise only the amino silica layer with polymers such as poly(2-(methacryloyloxy)ethyltrimethylammonium chloride) (PMETAC) in a grafting from approach. Investigation of the ionic pore accessibility of the mesoporous double layered films before and after layer-selective polymer functionalisation shows that the ionic pore accessibility is dominated by the bottom layer when overcoming the electrostatic repulsion of the top layer.

Journal or Publication Title: European Polymer Journal
Volume of the journal: 156
Place of Publication: Darmstadt
Publisher: Elsevier
Collation: 12 Seiten
Uncontrolled Keywords: Layer-selective functionalisation, Asymmetric charge distribution, Mesoporous separation layer, Iniferter polymerisation, Transport modulation
Classification DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Advanced Electron Microscopy (aem)
07 Department of Chemistry > Fachgebiet Makromolekulare Chemie
Date Deposited: 03 Aug 2022 12:21
Last Modified: 03 Aug 2022 12:21
DOI: 10.26083/tuprints-00021757
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-217579
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21757
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