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On-Surface Synthesis of Chlorinated Narrow Graphene Nanoribbon Organometallic Hybrids

Abstract : Graphene nanoribbons (GNRs) and their derivatives attract growing attention due to their excellent electronic and magnetic properties as well as the finetuning 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.
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https://hal.archives-ouvertes.fr/hal-03021696
Contributor : André Gourdon <>
Submitted on : Tuesday, November 24, 2020 - 2:21:47 PM
Last modification on : Tuesday, December 22, 2020 - 4:14:10 PM

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Rafal Zuzak, Pedro Brandimarte, Piotr Olszowski, Irena Izydorczyk, Marios Markoulides, et al.. On-Surface Synthesis of Chlorinated Narrow Graphene Nanoribbon Organometallic Hybrids. Journal of Physical Chemistry Letters, American Chemical Society, 2020, ⟨10.1021/acs.jpclett.0c03134⟩. ⟨hal-03021696⟩

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