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Chemically-resolved determination of hydrogenated graphene-substrate interaction
Authors:
Anders L.
Jørgensen
(Aarhus University)
,
David A.
Duncan
(Diamond Light Source)
,
Claus F. P.
Kastorp
(Aarhus University)
,
Line
Kyhl
(Aarhus University)
,
Zeyuan
Tang
(Aarhus University)
,
Albert
Bruix
(Technische Universitat Munchen)
,
Mie
Andersen
(Technische Universitat Munchen)
,
Bjork
Hammer
(Aarhus University)
,
Tien-Lin
Lee
(Diamond Light Source)
,
Liv
Hornekaer
(Aarhus University)
,
Richard
Balog
(Aarhus University)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Physical Chemistry Chemical Physics
State:
Published (Approved)
Published:
June 2019
Diamond Proposal Number(s):
16243
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.
Subject Areas:
Chemistry,
Physics
Instruments:
I09-Surface and Interface Structural Analysis
Added On:
10/06/2019 14:41
Discipline Tags:
Surfaces
Physics
Physical Chemistry
Chemistry
Nanoscience/Nanotechnology
Technical Tags:
Diffraction
X-ray Standing Wave (XSW)