Chemically-resolved determination of hydrogenated graphene-substrate interaction
| Autor: | Albert Bruix, Zeyuan Tang, Anders L. Jørgensen, David A. Duncan, Liv Hornekær, Tien-Lin Lee, Richard Balog, Bjørk Hammer, Mie Andersen, Claus F. P. Kastorp, Line Kyhl |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Substrate Interaction
Nanostructure Materials science Graphene General Physics and Astronomy 02 engineering and technology Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Chemical physics law Surface modification Graphane Density functional theory Nanodot Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Jorgensen, A L, Duncan, D A, Kastorp, C F P, Kyhl, L, Tang, Z, Bruix, A, Andersen, M, Hammer, B, Lee, T-L, Hornekaer, L & Balog, R 2019, ' Chemically-resolved determination of hydrogenated graphene-substrate interaction ', Physical Chemistry Chemical Physics, vol. 21, no. 25, pp. 13462-13466 . https://doi.org/10.1039/c9cp02059d Physical Chemistry Chemical Physics |
| DOI: | 10.1039/c9cp02059d |
| Popis: | 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 sp(3) 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. |
| Databáze: | OpenAIRE |
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