Issue 25, 2019

Chemically-resolved determination of hydrogenated graphene–substrate interaction


Functionalization of graphene on Ir(111) is a promising route to modify graphene by chemical means in a controlled fashion at the nanoscale. Yet, the nature of such functionalized sp3 nanodots remains unknown. Density functional theory (DFT) calculations alone cannot differentiate between two plausible structures, namely true graphane and substrate stabilized graphane-like nanodots. These two structures, however, interact dramatically differently with the underlying substrate. Discriminating which type of nanodots forms on the surface is thus of paramount importance for the applications of such prepared nanostructures. By comparing X-ray standing wave measurements against theoretical model structures obtained by DFT calculations we are able to exclude the formation of true graphane nanodots and clearly show the formation graphane-like nanodots.

Graphical abstract: Chemically-resolved determination of hydrogenated graphene–substrate interaction

Supplementary files

Article information

Article type
11 Apr 2019
03 Jun 2019
First published
04 Jun 2019
This article is Open Access
Creative Commons BY license

Phys. Chem. Chem. Phys., 2019,21, 13462-13466

Chemically-resolved determination of hydrogenated graphene–substrate interaction

A. L. Jørgensen, D. A. Duncan, C. F. P. Kastorp, L. Kyhl, Z. Tang, A. Bruix, M. Andersen, B. Hammer, T. Lee, L. Hornekær and R. Balog, Phys. Chem. Chem. Phys., 2019, 21, 13462 DOI: 10.1039/C9CP02059D

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