Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbons
Abstract Graphene nanoribbons (GNRs), nanometer-wide strips of graphene, have garnered significant attention due to their tunable electronic and magnetic properties arising from quantum confinement. A promising approach to manipulate their electronic characteristics involves substituting carbon with...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-11-01
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| Series: | Communications Chemistry |
| Online Access: | https://doi.org/10.1038/s42004-024-01344-7 |
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| author | Nicolò Bassi Xiushang Xu Feifei Xiang Nils Krane Carlo A. Pignedoli Akimitsu Narita Roman Fasel Pascal Ruffieux |
| author_facet | Nicolò Bassi Xiushang Xu Feifei Xiang Nils Krane Carlo A. Pignedoli Akimitsu Narita Roman Fasel Pascal Ruffieux |
| author_sort | Nicolò Bassi |
| collection | DOAJ |
| description | Abstract Graphene nanoribbons (GNRs), nanometer-wide strips of graphene, have garnered significant attention due to their tunable electronic and magnetic properties arising from quantum confinement. A promising approach to manipulate their electronic characteristics involves substituting carbon with heteroatoms, such as nitrogen, with different effects predicted depending on their position. In this study, we present the extension of the edges of 7-atom-wide armchair graphene nanoribbons (7-AGNRs) with pyridine rings, achieved on a Au(111) surface via on-surface synthesis. High-resolution structural characterization confirms the targeted structure, showcasing the predominant formation of carbon-nitrogen (C-N) bonds (over 90% of the units) during growth. This favored bond formation pathway is elucidated and confirmed through density functional theory (DFT) simulations. Furthermore, an analysis of the electronic properties reveals metallic behavior due to charge transfer to the Au(111) substrate accompanied by the presence of nitrogen-localized states. Our results underscore the successful formation of C-N bonds on the metal surface, providing insights for designing new GNRs that incorporate substitutional nitrogen atoms to precisely control their electronic properties. |
| format | Article |
| id | doaj-art-8285df5b8bca4967b76bc8883b3dd948 |
| institution | Kabale University |
| issn | 2399-3669 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Chemistry |
| spelling | doaj-art-8285df5b8bca4967b76bc8883b3dd9482024-11-24T12:14:24ZengNature PortfolioCommunications Chemistry2399-36692024-11-01711910.1038/s42004-024-01344-7Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbonsNicolò Bassi0Xiushang Xu1Feifei Xiang2Nils Krane3Carlo A. Pignedoli4Akimitsu Narita5Roman Fasel6Pascal Ruffieux7nanotech@surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and TechnologyOrganic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate Universitynanotech@surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technologynanotech@surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technologynanotech@surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and TechnologyOrganic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate Universitynanotech@surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technologynanotech@surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and TechnologyAbstract Graphene nanoribbons (GNRs), nanometer-wide strips of graphene, have garnered significant attention due to their tunable electronic and magnetic properties arising from quantum confinement. A promising approach to manipulate their electronic characteristics involves substituting carbon with heteroatoms, such as nitrogen, with different effects predicted depending on their position. In this study, we present the extension of the edges of 7-atom-wide armchair graphene nanoribbons (7-AGNRs) with pyridine rings, achieved on a Au(111) surface via on-surface synthesis. High-resolution structural characterization confirms the targeted structure, showcasing the predominant formation of carbon-nitrogen (C-N) bonds (over 90% of the units) during growth. This favored bond formation pathway is elucidated and confirmed through density functional theory (DFT) simulations. Furthermore, an analysis of the electronic properties reveals metallic behavior due to charge transfer to the Au(111) substrate accompanied by the presence of nitrogen-localized states. Our results underscore the successful formation of C-N bonds on the metal surface, providing insights for designing new GNRs that incorporate substitutional nitrogen atoms to precisely control their electronic properties.https://doi.org/10.1038/s42004-024-01344-7 |
| spellingShingle | Nicolò Bassi Xiushang Xu Feifei Xiang Nils Krane Carlo A. Pignedoli Akimitsu Narita Roman Fasel Pascal Ruffieux Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbons Communications Chemistry |
| title | Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbons |
| title_full | Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbons |
| title_fullStr | Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbons |
| title_full_unstemmed | Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbons |
| title_short | Preferential graphitic-nitrogen formation in pyridine-extended graphene nanoribbons |
| title_sort | preferential graphitic nitrogen formation in pyridine extended graphene nanoribbons |
| url | https://doi.org/10.1038/s42004-024-01344-7 |
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