Moiré lattice of twisted bilayer graphene as template for non-covalent functionalization
We present a novel approach to achieve spatial variations in the degree of non-covalent functionalization of twisted bilayer graphene (tBLG). The tBLG with twist angles varying between 5° and 7° was non-covalently functionalized with 1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile (HATCN) molecules...
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| Hauptverfasser: | , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
January 10, 2025
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| In: |
Angewandte Chemie. International edition
Year: 2025, Jahrgang: 64, Heft: 2, Pages: 1-7 |
| ISSN: | 1521-3773 |
| DOI: | 10.1002/anie.202414593 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/anie.202414593 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202414593 
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| Verfasserangaben: | Tobias Dierke, Stefan Wolff, Roland Gillen, Jasmin Eisenkolb, Tamara Nagel, Sabine Maier, Milan Kivala, Frank Hauke, Andreas Hirsch, and Janina Maultzsch |
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| 245 | 1 | 0 | |a Moiré lattice of twisted bilayer graphene as template for non-covalent functionalization |c Tobias Dierke, Stefan Wolff, Roland Gillen, Jasmin Eisenkolb, Tamara Nagel, Sabine Maier, Milan Kivala, Frank Hauke, Andreas Hirsch, and Janina Maultzsch |
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| 520 | |a We present a novel approach to achieve spatial variations in the degree of non-covalent functionalization of twisted bilayer graphene (tBLG). The tBLG with twist angles varying between 5° and 7° was non-covalently functionalized with 1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile (HATCN) molecules. Our results show a correlation between the degree of functionalization and the twist angle of tBLG. This correlation was determined through Raman spectroscopy, where areas with larger twist angles exhibited a lower HATCN peak intensity compared to areas with smaller twist angles. We suggest that the HATCN adsorption follows the moiré pattern of tBLG by avoiding AA-stacked areas and attach predominantly to areas with a local AB-stacking order of tBLG, forming an overall ABA-stacking configuration. This is supported by density functional theory (DFT) calculations. Our work highlights the role of the moiré lattice in controlling the non-covalent functionalization of tBLG. Our approach can be generalized for designing nanoscale patterns on two-dimensional (2D) materials using moiré structures as a template. This could facilitate the fabrication of nanoscale devices with locally controlled varying chemical functionality. | ||
| 650 | 4 | |a 2D materials | |
| 650 | 4 | |a Density functional calculations | |
| 650 | 4 | |a Functionalization | |
| 650 | 4 | |a Graphene | |
| 650 | 4 | |a Raman spectroscopy | |
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| 700 | 1 | |a Gillen, Roland |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Nagel, Tamara |e VerfasserIn |4 aut | |
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