The effect of water on gold supported chiral graphene nanoribbons: rupture of conjugation by an alternating hydrogenation pattern

0584955 - FZÚ 2025 RIV GB eng J - Článek v odborném periodiku
Berdonces-Layunta, A. - Matěj, Adam - Jimenez-Martin, Alejandro - Lawrence, J. - Mohammed, M.S.G. - Wang, T. - Mallada Faes, Benjamin Jose - de la Torre, B. - Martínez, A. - Vilas-Varela, M. - Nieman, R. - Lischka, H. - Nachtigallová, Dana - Pena, D. - Jelínek, Pavel - de Oteyza, D.G.
The effect of water on gold supported chiral graphene nanoribbons: rupture of conjugation by an alternating hydrogenation pattern.
Nanoscale. Roč. 16, č. 2 (2024), s. 734-741. ISSN 2040-3364. E-ISSN 2040-3372
Grant CEP: GA ČR(CZ) GX20-13692X
Grant ostatní: AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Výzkumná infrastruktura: CzechNanoLab II - 90251; e-INFRA CZ - 90140
Institucionální podpora: RVO:68378271 ; RVO:61388963
Klíčová slova: SPM * graphene nanoribbons * reactivity * DFT
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.); Physical chemistry (UOCHB-X)
Impakt faktor: 6.7, rok: 2022
Způsob publikování: Open access

In the last few years we have observed a breakpoint in the development of graphene-derived technologies, such as liquid phase filtering and their application to electronics. In most of these cases, they imply exposure of the material to solvents and ambient moisture, either in the fabrication of the material or the final device. The present study demonstrates the sensitivity of graphene nanoribbon (GNR) zigzag edges to water, even in extremely low concentrations. We have addressed the unique reactivity of (3,1)-chiral GNR with moisture on Au(111). Water shows a reductive behaviour, hydrogenating the central carbon of the zigzag segments. By combining scanning tunnelling microscopy (STM) with simulations, we demonstrate how their reactivity reaches a thermodynamic limit when half of the unit cells are reduced, resulting in an alternating pattern of hydrogenated and pristine unit cells starting from the terminal segments.
Trvalý link: https://hdl.handle.net/11104/0352744