Methylamine terminated molecules on Ni(111): A path to low temperature synthesis of nitrogen-doped graphene

2020-11-01
Costantini, Roberto
Toffoli, Hande
Feng, Zhijing
Stredansky, Matus
Toffoli, Daniele
Fronzoni, Giovanna
Dri, Carlo
Comelli, Giovanni
Cvetko, Dean
Kladnik, Gregor
Bavdek, Gregor
Floreano, Luca
Morgante, Alberto
Cossaro, Albano
The thermal treatment of a monolayer of 1-naphthylmethylamine (NMA) on Ni(1 1 1) surface reveals a complex chemistry promoted by the high surface reactivity. Both the amino-terminated functional group and the naphthalene body of NMA undergo a progressive dehydrogenation, which eventually leads to the coalescence of the molecules. As a result, 2D structures of increasing size are synthesized on the surface, characterized by a graphene-like lattice in which nitrogen atoms are mainly incorporated as pyridinic substitutional defects. In this paper, we show the evidence of the formation of extended nitrogen-doped graphene (N-GR) domains at temperatures as low as 300 degrees C, with band dispersion measurements that reveal p-type doping.
Citation Formats
R. Costantini et al., “Methylamine terminated molecules on Ni(111): A path to low temperature synthesis of nitrogen-doped graphene,” pp. 0–0, 2020, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/70193.