Academic Journal
Unraveling the Band Structure and Orbital Character of a π-Conjugated 2D Graphdiyne-Based Organometallic Network
| العنوان: | Unraveling the Band Structure and Orbital Character of a π-Conjugated 2D Graphdiyne-Based Organometallic Network |
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| المؤلفون: | D'Agosta, Paolo, Achilli, Simona, Tumino, Francesco, Orbelli Biroli, Alessio, Di Santo, Giovanni, Petaccia, Luca, Onida, Giovanni, Li Bassi, Andrea, Lobo-Checa, Jorge, Casari, Carlo S. |
| المساهمون: | D'Agosta, Paolo, Achilli, Simona, Tumino, Francesco, Orbelli Biroli, Alessio, Di Santo, Giovanni, Petaccia, Luca, Onida, Giovanni, Li Bassi, Andrea, Lobo-Checa, Jorge, Casari, Carlo S. |
| سنة النشر: | 2024 |
| المجموعة: | IRIS UNIPV (Università degli studi di Pavia) |
| مصطلحات موضوعية: | pi-conjugation, 2D material, electronic band structure, graphdiyne-based network, organometallic framework, surface-state confinement |
| الوصف: | Graphdiyne-based carbon systems generate intriguing layered sp–sp2 organometallic lattices, characterized by flexible acetylenic groups connecting planar carbon units through metal centers. At their thinnest limit, they can result in 2D organometallic networks exhibiting unique quantum properties and even confining the surface states of the substrate, which is of great importance for fundamental studies. In this work, the on-surface synthesis of a highly crystalline 2D organometallic network grown on Ag(111) is presented. The electronic structure of this mixed honeycomb-kagome arrangement – investigated by angle-resolved photoemission spectroscopy and scanning tunneling spectroscopy – reveals a strong electronic conjugation within the network, leading to the formation of two intense electronic band-manifolds. In comparison to theoretical density functional theory calculations, it is observed that these bands exhibit a well-defined orbital character that can be associated with distinct regions of the sp–sp2 monomers. Moreover, it is found that the halogen by-products resulting from the network formation locally affect the pore-confined states, causing a significant energy shift. This work contributes to the understanding of the growth and electronic structure of graphdiyne-like 2D networks, providing insights into the development of novel carbon materials beyond graphene with tailored properties. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | STAMPA |
| اللغة: | English |
| Relation: | journal:SMALL; https://hdl.handle.net/11571/1513522 |
| DOI: | 10.1002/smll.202406533 |
| الاتاحة: | https://hdl.handle.net/11571/1513522 https://doi.org/10.1002/smll.202406533 https://onlinelibrary.wiley.com/doi/10.1002/smll.202406533 |
| رقم الانضمام: | edsbas.1C389C81 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/smll.202406533 |
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