Graphene grown on transition metal substrates: Versatile templates for organic molecules with new properties and structures

IF 8.2 1区 化学 Q1 CHEMISTRY, PHYSICAL
Cristina Díaz , Fabián Calleja , Amadeo L. Vázquez de Parga , Fernando Martín
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引用次数: 1

Abstract

The interest in graphene (a carbon monolayer) adsorbed on metal surfaces goes back to the 60's, long before isolated graphene was produced in the laboratory. Owing to the carbon-metal interaction and the lattice mismatch between the carbon monolayer and the metal surface, graphene usually adopts a rippled structure, known as moiré, that confers it interesting electronic properties not present in isolated graphene. These moiré structures can be used as versatile templates where to adsorb, isolate and assemble organic-molecule structures with some desired geometric and electronic properties. In this review, we first describe the main experimental techniques and the theoretical methods currently available to produce and characterize these complex systems. Then, we review the diversity of moiré structures that have been reported in the literature and the consequences for the electronic properties of graphene, attending to the magnitude of the lattice mismatch and the type of interaction, chemical or physical, between graphene and the metal surface. Subsequently, we address the problem of the adsorption of single organic molecules and then of several ones, from dimers to complete monolayers, describing both the different arrangements that these molecules can adopt as well as their physical and chemical properties. We pay a special attention to graphene/Ru(0001) due to its exceptional electronic properties, which have been used to induce long-range magnetic order in tetracyanoquinodimethane (TCNQ) monolayers, to catalyze the (reversible) reaction between acetonitrile and TCNQ molecules and to efficiently photogenerate large acenes.

在过渡金属衬底上生长的石墨烯:具有新性质和结构的有机分子的多功能模板
人们对吸附在金属表面的石墨烯(一种碳单分子层)的兴趣可以追溯到上世纪60年代,那时候实验室里还没有分离出石墨烯。由于碳-金属相互作用以及碳单层和金属表面之间的晶格不匹配,石墨烯通常采用波纹结构,称为波纹结构,这赋予了它在孤立的石墨烯中不存在的有趣的电子特性。这些波纹结构可以用作多功能模板,用于吸附、分离和组装具有某些所需几何和电子特性的有机分子结构。在这篇综述中,我们首先描述了目前用于产生和表征这些复杂系统的主要实验技术和理论方法。然后,我们回顾了文献中报道的波纹结构的多样性,以及对石墨烯电子特性的影响,包括晶格失配的大小和石墨烯与金属表面之间化学或物理相互作用的类型。随后,我们解决了单个有机分子的吸附问题,然后是几个有机分子的吸附问题,从二聚体到完整的单层,描述了这些分子可以采用的不同排列以及它们的物理和化学性质。我们特别关注石墨烯/Ru(0001),因为它具有特殊的电子性质,它已被用于在四氰喹诺二甲烷(TCNQ)单层中诱导远程磁序,催化乙腈和TCNQ分子之间的(可逆)反应,并有效地产生大的烯。
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来源期刊
Surface Science Reports
Surface Science Reports 化学-物理:凝聚态物理
CiteScore
15.90
自引率
2.00%
发文量
9
审稿时长
178 days
期刊介绍: Surface Science Reports is a journal that specializes in invited review papers on experimental and theoretical studies in the physics, chemistry, and pioneering applications of surfaces, interfaces, and nanostructures. The topics covered in the journal aim to contribute to a better understanding of the fundamental phenomena that occur on surfaces and interfaces, as well as the application of this knowledge to the development of materials, processes, and devices. In this journal, the term "surfaces" encompasses all interfaces between solids, liquids, polymers, biomaterials, nanostructures, soft matter, gases, and vacuum. Additionally, the journal includes reviews of experimental techniques and methods used to characterize surfaces and surface processes, such as those based on the interactions of photons, electrons, and ions with surfaces.
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