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Instruments / Technical Area	Publication Details	Published	Actions
I09-Surface and Interface Structural Analysis	Chemically-resolved determination of hydrogenated graphene-substrate interaction Anders L. Jørgensen , David A. Duncan , Claus F. P. Kastorp , Line Kyhl , Zeyuan Tang , Albert Bruix , Mie Andersen , Bjork Hammer , Tien-lin Lee , Liv Hornekaer , Richard Balog Physical Chemistry Chemical Physics DOI: 10.1039/C9CP02059D Diamond Proposal Number(s): [16243] Show Abstract ▼ Abstract: 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.	Jun 2019

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