Journal article

Publication year: 2016

Pages: 1615-1622

Journal: Journal of Physical Chemistry C

Volume number: 120

Issue number: 3

ISSN: 1932-7447

eISSN: 1932-7455

DOI Link: https://doi.org/10.1021/acs.jpcc.5b10602

Publisher: American Chemical Society

Abstract: 
Molecular self-assembly can be used for the bottom-up fabrication of nanoscale electronic devices. For this, polycyclic aromatic hydrocarbons are particularly suited due to their extended x-system. Besides, these compounds can serve as precursors for fabricating graphene-like, material. To design future electronic devices it is essential to be able to reproducibly predict the structure formation of these molecules after adsorption on solid surfaces. Here we studied the self assembly of triphenylene molecules, on a reconstructed Au(111) substrate in the submonolayer regime by scanning tunneling microscopy. Only, two different orientations of the planar adsorbed molecules are observed. At intermediate coverages self:assembly is mainly determined by repulsive molecule molecule interactions, leading to a one-to-one ratio of molecular orientations. At 1.0 monolayer coverage, however, a reorientation into close-packed domains occurs, which significantly shifts the ratio of molecular orientations. It is found that this reorientation is controlled by molecule-subsurface interactions, opening new avenues in assembling molecules on surfaces.

Harvard Citation style: Zint, S., Ebeling, D., Ahles, S., Wegner, H. and Schirmeisen, A. (2016) Subsurface-Controlled Angular Rotation: Triphenylene Molecules on Au(111) Substrates, Journal of Physical Chemistry C, 120(3), pp. 1615-1622. https://doi.org/10.1021/acs.jpcc.5b10602

APA Citation style: Zint, S., Ebeling, D., Ahles, S., Wegner, H., & Schirmeisen, A. (2016). Subsurface-Controlled Angular Rotation: Triphenylene Molecules on Au(111) Substrates. Journal of Physical Chemistry C. 120(3), 1615-1622. https://doi.org/10.1021/acs.jpcc.5b10602