Modification of heterojunctions by electron injection from a STM tip

ROM 2012-10
Author: Stephan Blankenburg 1), Jinming Cai 1), Pascal Ruffieux 1), Rached Jaafar 1), Daniele Passerone 1), Xinliang Feng 2), Klaus Müllen 2), Roman Fasel 1),3), and Carlo A. Pignedoli 1)
Institute: 1) EMPA, Swiss Federal Laboratories for Materials Science and Technology, nanotech@surfaces Laboratory, 8600 Dübendorf, Switzerland 2) Max Planck Institute for Polymer Research, Ackermannweg 10, 55124 Mainz, Germany 3) Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
Publication: ACS Nano, Just Accepted Manuscript • DOI: 10.1021/nn203129a • Publication Date (Web): 10 Feb 2012
Instrument: VT SPM, LT STM

Graphene nanoribbon heterojunctions with lateral dimensions below 2 nm have been realized via controllable dehydrogenation of polyanthrylene oligomers self-assembled on a Au(111) surface from molecular precursors.The capability to selectively modify the heterojunctions by activating the dehydrogenation reaction on single units of the nanoribbons by electron injection from the tip of a scanning tunneling microscope has been demonstrated.

Corresponding Authors: Carlo A. Pignedoli, / Roman Fasel,