Ali, Mubarak ; Nasir, Saima ; Froehlich, Kristina ; Ramirez, Patricio ; Cervera, Javier ; Mafe, Salvador ; Ensinger, Wolfgang (2023)
Size‐Based Cationic Molecular Sieving through Solid‐State Nanochannels.
In: Advanced Materials Interfaces, 2021, 8 (6)
doi: 10.26083/tuprints-00020146
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
The molecular sieving behavior of soft‐etched polyimide membranes having negatively charged nanochannels is described experimentally and theoretically using alkali metal–crown ether cationic complexes and alkylammonium cations. To this end, the electrical conduction and current rectification obtained with different alkali electrolyte solutions (LiCl, NaCl, and KCl) and crown ether molecules (12‐crown‐4, 15‐crown‐5, and 18‐crown‐6) are studied. The results suggest that only the [Li(12C4)]⁺ complex can readily permeate through the nanochannels because significant current decreases are obtained in the cases of the [Na(15C5)]⁺ and [K(18C6)]⁺ complexes. In solutions of organic cations ranging from ammonium (NH₄⁺) to alkylammonium (R₄N⁺) with increasing molecular size, only the smaller ions can conduct high electric currents, suggesting again that the membrane channels are in the nanometer range. Taken together, the observed current decreases and rectification phenomena demonstrate that the functionalized membranes allow a versatile combination of molecular and electrostatic sieving.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Ali, Mubarak ; Nasir, Saima ; Froehlich, Kristina ; Ramirez, Patricio ; Cervera, Javier ; Mafe, Salvador ; Ensinger, Wolfgang |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Size‐Based Cationic Molecular Sieving through Solid‐State Nanochannels |
| Sprache: | Englisch |
| Publikationsjahr: | 22 Dezember 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2021 |
| Ort der Erstveröffentlichung: | Weinheim |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Materials Interfaces |
| Jahrgang/Volume einer Zeitschrift: | 8 |
| (Heft-)Nummer: | 6 |
| Kollation: | 10 Seiten |
| DOI: | 10.26083/tuprints-00020146 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/20146 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | The molecular sieving behavior of soft‐etched polyimide membranes having negatively charged nanochannels is described experimentally and theoretically using alkali metal–crown ether cationic complexes and alkylammonium cations. To this end, the electrical conduction and current rectification obtained with different alkali electrolyte solutions (LiCl, NaCl, and KCl) and crown ether molecules (12‐crown‐4, 15‐crown‐5, and 18‐crown‐6) are studied. The results suggest that only the [Li(12C4)]⁺ complex can readily permeate through the nanochannels because significant current decreases are obtained in the cases of the [Na(15C5)]⁺ and [K(18C6)]⁺ complexes. In solutions of organic cations ranging from ammonium (NH₄⁺) to alkylammonium (R₄N⁺) with increasing molecular size, only the smaller ions can conduct high electric currents, suggesting again that the membrane channels are in the nanometer range. Taken together, the observed current decreases and rectification phenomena demonstrate that the functionalized membranes allow a versatile combination of molecular and electrostatic sieving. |
| Freie Schlagworte: | alkylammonium cations, ionic conduction, metal ion‐crown ether complexes, molecular sieving, polyimide membranes |
| ID-Nummer: | 2001766 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-201460 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik Interdisziplinäre Forschungsprojekte Interdisziplinäre Forschungsprojekte > Centre for Synthetic Biology |
| Hinterlegungsdatum: | 22 Dez 2023 13:25 |
| Letzte Änderung: | 28 Dez 2023 07:24 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Size‐Based Cationic Molecular Sieving through Solid‐State Nanochannels. (deposited 22 Dez 2023 13:25) [Gegenwärtig angezeigt]
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