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On-Surface Synthesis of Chlorinated Narrow Graphene Nanoribbon Organometallic Hybrids
The Journal of Physical Chemistry Letters ( IF 5.7 ) Pub Date : 2020-11-23 , DOI: 10.1021/acs.jpclett.0c03134
Rafal Zuzak 1 , Pedro Brandimarte 2 , Piotr Olszowski 1 , Irena Izydorczyk 1 , Marios Markoulides 3 , Bartosz Such 1 , Marek Kolmer 1 , Marek Szymonski 1 , Aran Garcia-Lekue 2, 4 , Daniel Sánchez-Portal 2, 5 , André Gourdon 3 , Szymon Godlewski 1
Affiliation  

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.

中文翻译:

氯化窄石墨烯纳米带有机金属杂化物的表面合成

石墨烯纳米带(GNR)及其衍生物由于其优异的电子和磁性性能以及可通过杂原子取代和/或边缘形态修饰获得的此类性能的微调而受到越来越多的关注。在这里,我们介绍石墨烯纳米带衍生物—有机金属杂化体,其中金原子结合在碳骨架和侧面Cl原子之间。我们表明,窄氯化5- AGNROHs(扶手椅石墨烯纳米带的有机金属杂交)可以通过在表面聚合与环化脱氢反应的遗漏由定制分子前体的适当选择来制造。最后,我们描述了通过氢原子处理来交换通过金原子连接到碳骨架的氯原子的途径。这是直接在表面上实现的,产生完美的未取代氢封端的GNR。当需要制备最终的未取代的烃结构时,这在分子表面处理中将是有益的。
更新日期:2020-12-17
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