Article

Moiré pattern induced by the electronic coupling between 1-octanol self-assembled monolayers and graphite surface.

CEA, IRAMIS, SPCSI, Hybrid Magnetic Nanoarchitectures, F-91191 Gif sur Yvette, France.
Nanotechnology (impact factor: 3.98). 05/2012; 23(22):225603. DOI:10.1088/0957-4484/23/22/225603 pp.225603
Source: PubMed

ABSTRACT Two-dimensional self-assembly of 1-octanol molecules on a graphite surface is investigated using scanning tunneling microscopy (STM) at the solid/liquid interface. STM images reveal that this molecule self-assembles into a compact hydrogen-bonded herringbone nanoarchitecture. Molecules are preferentially arranged in a head-to-head and tail-to-tail fashion. A Moiré pattern appears in the STM images when the 1-octanol layer is covering the graphite surface. The large Moiré stripes are perpendicular to the 1-octanol lamellae. Interpretation of the STM images suggests that the Moiré periodicity is governed by the electronic properties of the graphite surface and the 1-octanol layer periodicity.

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Keywords

1-octanol layer periodicity
 
1-octanol molecules
 
compact hydrogen-bonded herringbone nanoarchitecture
 
head-to-head
 
large Moiré stripes
 
Moiré periodicity
 
molecule self-assembles
 
Molecules
 
scanning tunneling microscopy
 
STM
 
STM images
 
tail-to-tail fashion
 
Two-dimensional self-assembly