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Surface Enhanced DNP Assisted Solid-State NMR of Functionalized SiO2 Coated Polycarbonate Membranes

Kumari, Bharti ; John, Daniel ; Hoffmann, Paul ; Spende, Anne ; Toimil-Molares, Maria Eugenia ; Trautmann, Christina ; Hess, Christian ; Ruff, Philip ; Schulze, Marcus ; Stark, Robert ; Buntkowsky, Gerd ; Andrieu-Brunsen, Annette ; Gutmann, Torsten (2021)
Surface Enhanced DNP Assisted Solid-State NMR of Functionalized SiO2 Coated Polycarbonate Membranes.
In: Zeitschrift für Physikalische Chemie, 232 (7-8)
doi: 10.26083/tuprints-00019680
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Surface Enhanced DNP Assisted Solid-State NMR of Functionalized SiO2 Coated Polycarbonate Membranes
Language: English
Date: 2021
Place of Publication: Darmstadt
Publisher: De Gruyter
Journal or Publication Title: Zeitschrift für Physikalische Chemie
Volume of the journal: 232
Issue Number: 7-8
DOI: 10.26083/tuprints-00019680
Corresponding Links:
Origin: Secondary publication service
Abstract:

Surface enhanced solid-state NMR by dynamic nuclear polarization (DNP SENS) enables the characterization of the inner-pore surface functionalization of porous etched ion-track membranes exhibiting low specific surface areas compared to typical SBA- or MCM-type mesoporous silica materials. The membranes were conformally coated with a 5 nm thin SiO2 layer by atomic layer deposition. This layer was subsequently modified by aminopropyl silane linkers that allow further functionalization via the terminal amine group. The results evidence that in principle DNP SENS is a capable tool to analyze more complex porous systems, e.g. bioinspired functional etched ion-track membranes down to the molecular level. These results are relevant also for single nanopore systems, for which a direct analysis of the channel surface functionalization is not feasible by classical characterization methods. The applicability of DNP SENS to complex porous systems requires the optimization of the sample preparation and measurement parameters.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-196801
Additional Information:

Keywords: dynamic nuclear polarization; etched ion-track membranes; silica coating; solid-state NMR; surface analysis

Classification DDC: 500 Science and mathematics > 540 Chemistry
Divisions: 07 Department of Chemistry > Physical Chemistry
07 Department of Chemistry > Eduard Zintl-Institut > Physical Chemistry
Date Deposited: 01 Oct 2021 11:21
Last Modified: 09 Jan 2023 08:17
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19680
PPN: 503406414
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