Pedro Brandimarte

On-Surface Synthesis of Chlorinated Narrow Graphene Nanoribbon Organometallic Hybrids

Journal of Physical Chemistry Letters - 2020    

Abstract

Graphene nanoribbons (GNRs) and their derivatives attract growing attention due to their excellent electronic and magnetic properties as well as the fine-tuning of such properties that can be obtained by heteroatom substitution and/or edge morphology modification. Here, we introduce graphene nanoribbon derivatives – organometallic hybrids with gold atoms incorporated between the carbon skeleton and side Cl atoms. We show that narrow chlorinated 5-AGNROHs (armchair graphene nanoribbon organometallic hybrids) can be fabricated by on-surface polymerization with omission of the cyclodehydrogenation reaction by a proper choice of tailored molecular precursors. Finally, we describe a route to exchange chlorine atoms connected through gold atoms to the carbon skeleton by hydrogen atom treatment. This is achieved directly on the surface, resulting in perfect unsubstituted hydrogen-terminated GNRs. This will be beneficial in the molecule on-surface processing when the preparation of final unsubstituted hydrocarbon structure is desired.

Bibtex citation

@Article{Zuzak2020,
  author    = {Rafal Zuzak and Pedro Brandimarte and Piotr Olszowski and Irena Izydorczyk and Marios Markoulides and Bartosz Such and Marek Kolmer and Marek Szymonski and Aran Garcia-Lekue and Daniel S{\'{a}}nchez-Portal and Andr{\'{e}} Gourdon and Szymon Godlewski},
  title     = {On-Surface Synthesis of Chlorinated Narrow Graphene Nanoribbon Organometallic Hybrids},
  journal   = {Journal of Physical Chemistry Letters},
  year      = {2020},
  volume    = {11},
  number    = {24},
  pages     = {10290--10297},
  doi       = {10.1021/acs.jpclett.0c03134},
  publisher = {American Chemical Society ({ACS})},
}

Key words

• nanographene
• on-surface synthesis
• scanning probe microscopy
• electronic structure
• density functional theory
• graphene nanoribbon
• chemical doping