Chemical stability of (3,1)-chiral graphene nanoribbons

0542667 - FZÚ 2022 RIV US eng J - Článek v odborném periodiku
Berdonces-Layunta, A. - Lawrence, J. - Edalatmanesh, Shayan - Castro-Esteban, J. - Wang, T. - Mohammed, M.S.G. - Colazzo, L. - Pena, D. - Jelínek, Pavel - de Oteyza, D.G.
Chemical stability of (3,1)-chiral graphene nanoribbons.
ACS Nano. Roč. 15, č. 3 (2021), s. 5610-5617. ISSN 1936-0851. E-ISSN 1936-086X
Grant CEP: GA ČR(CZ) GX20-13692X; GA MŠMT LM2018110
Grant ostatní: AV ČR(CZ) AP1601
Program: Akademická prémie - Praemium Academiae
Institucionální podpora: RVO:68378271
Klíčová slova: graphene nanoribbons * SPM * on surface chemistry * zigzag edges * stability
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 18.027, rok: 2021
Způsob publikování: Omezený přístup
https://10.1021/acsnano.1c00695

In this study, a combination of bond-resolving scanning probe microscopy (BR-SPM), along with theoretical calculations, has been employed to study (3,1)-chiral graphene nanoribbons [(3,1)-chGNRs] that were synthesized on a Au(111) surface and then exposed to oxidizing environments. Exposure to the ambient atmosphere, along with the required annealing treatment to desorb a sufficiently large fraction of contaminants to allow for its postexposure analysis by BR-SPM, revealed a significant oxidation of the ribbons, with a dramatically disruptive effect on their electronic properties. More controlled experiments avoiding high temperatures and exposing the ribbons only to low pressures of pure oxygen show that also under these more gentle conditions the ribbons are oxidized.
Trvalý link: http://hdl.handle.net/11104/0320048