Periodic potentials in hybrid van der Waals heterostructures formed by supramolecular lattices on graphene.
The rise of 2D materials made it possible to form heterostructures held together by weak interplanar van der Waals interactions. Within such van der Waals heterostructures, the occurrence of 2D periodic potentials significantly modifies the electronic structure of single sheets within the stack, therefore modulating the material properties. However, these periodic potentials are determined by the mechanical alignment of adjacent 2D materials, which is cumbersome and time-consuming. Here we show that programmable 1D periodic potentials extending over areas exceeding 104nm2and stable at ambient conditions arise when graphene is covered by a self-assembled supramolecular lattice. The amplitude and sign of the potential can be modified without altering its periodicity by employing photoreactive molecules or their reaction products. In this regard, the supramolecular lattice/graphene bilayer represents the hybrid analogue of fully inorganic van der Waals heterostructures, highlighting the rich prospects that molecular design offers to create ad hoc materials.
University of Strasbourg, CNRS, ISIS UMR 7006, 8 Allée Gaspard Monge, F-67000 Strasbourg, France.
Marco
M
Gobbi
University of Strasbourg, CNRS, ISIS UMR 7006, 8 Allée Gaspard Monge, F-67000 Strasbourg, France.
Sara
S
Bonacchi
Laboratory for Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, 7000 Mons, Belgium.
Jian X
JX
Lian
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Yi
Y
Liu
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Xiao-Ye
0000-0003-3540-0277
XY
Wang
University of Strasbourg, CNRS, ISIS UMR 7006, 8 Allée Gaspard Monge, F-67000 Strasbourg, France.
Marc-Antoine
MA
Stoeckel
University of Strasbourg, CNRS, ISIS UMR 7006, 8 Allée Gaspard Monge, F-67000 Strasbourg, France.
Marco A
MA
Squillaci
Laboratory for Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, 7000 Mons, Belgium.
Gabriele
G
D'Avino
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Akimitsu
A
Narita
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Klaus
K
Müllen
Center for Advancing Electronics Dresden (CFAED) and Department of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstraße 4, 01062 Dresden, Germany.
Xinliang
X
Feng
Laboratory for Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, 7000 Mons, Belgium.
Yoann
Y
Olivier
Laboratory for Chemistry of Novel Materials, Center for Research in Molecular Electronics and Photonics, University of Mons, Place du Parc 20, 7000 Mons, Belgium.
David
D
Beljonne
University of Strasbourg, CNRS, ISIS UMR 7006, 8 Allée Gaspard Monge, F-67000 Strasbourg, France.
Paolo
P
Samorì
University of Strasbourg, CNRS, ISIS UMR 7006, 8 Allée Gaspard Monge, F-67000 Strasbourg, France.
Emanuele
0000-0002-8232-0950
E
Orgiu