Opening the way to molecular cycloaddition of large molecules on supported silicene

Stephan, Régis; Hanf, Marie-Christine; Sonnet, Philippe

doi:10.1063/1.4933369

Cited by 7 publications

(4 citation statements)

References 73 publications

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“…Figure 3(f) presents the electron localization function (ELF) for one molecule on germanene/Al(1 1 1). The ELF has already been successfully used in order to characterize interactions in similar systems [60,61].…”

Section: Resultsmentioning

confidence: 99%

Experimental molecular adsorption: electronic buffer effect of germanene on Al(1 1 1)

et al. 2019

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The interaction of organic C 60 molecules with germanene grown on Al(1 1 1) is investigated by experimental tools and calculations. By mean of scanning tunneling microscopy, we show that a single but disordered C 60 layer is formed upon deposition in the monolayer range. Density functional theory calculations indicate that van der Waals and electrostatic interactions are present between the C 60 layer and the germanene, without formation of covalent bond. Moreover, the C 60 molecules are adsorbed without major crystallographic and charge modifications at the interface between germanene and the Al(1 1 1) substrate. The predicted charge transfer from the Al(1 1 1) substrate to the C 60 molecules is very small, which means that the germanene layer acts as an electronic buffer between the highly electron attractor C 60 molecules and the large electron reservoir Al(1 1 1). This leaves the C 60 layer quite uncharged, and so preserves its electron attractor properties for further layers grown on it, in the design of new molecular sensors.

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Section: Resultsmentioning

confidence: 99%

Experimental molecular adsorption: electronic buffer effect of germanene on Al(1 1 1)

et al. 2019

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“…Xenes functionalized by large planar molecules have been studied too. For example, phthalocyanine (H 2 Pc) was predicted to interact weakly with silicene/Ag(1 1 1) system [197]. Its family member, iron phthalocyanine (FePc) has been deposited on silicene/ZrB 2 and was shown to remain stable up to room temperature at the same time retaining its electronic states [198].…”

Section: Adsorption Of Moleculesmentioning

confidence: 99%

Functionalization of group-14 two-dimensional materials

Krawiec

2018

J. Phys.: Condens. Matter

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The great success of graphene has boosted intensive search for other single-layer thick materials, mainly composed of group-14 atoms arranged in a honeycomb lattice. This new class of two-dimensional (2D) crystals, known as 2D-Xenes, has become an emerging field of intensive research due to their remarkable electronic properties and the promise for a future generation of nanoelectronics. In contrast to graphene, Xenes are not completely planar, and feature a low buckled geometry with two sublattices displaced vertically as a result of the interplay between sp and sp orbital hybridization. In spite of the buckling, the outstanding electronic properties of graphene governed by Dirac physics are preserved in Xenes too. The buckled structure also has several advantages over graphene. Together with the spin-orbit (SO) interaction it may lead to the emergence of various experimentally accessible topological phases, like the quantum spin Hall effect. This in turn would lead to designing and building new electronic and spintronic devices, like topological field effect transistors. In this regard an important issue concerns the electron energy gap, which for Xenes naturally exists owing to the buckling and SO interaction. The electronic properties, including the magnitude of the energy gap, can further be tuned and controlled by external means. Xenes can easily be functionalized by substrate, chemical adsorption, defects, charge doping, external electric field, periodic potential, in-plane uniaxial and biaxial stress, and out-of-plane long-range structural deformation, to name a few. This topical review explores structural, electronic and magnetic properties of Xenes and addresses the question of their functionalization in various ways, including external factors acting simultaneously. It also points to future directions to be explored in functionalization of Xenes. The results of experimental and theoretical studies obtained so far have many promising features making the 2D-Xene materials important players in the field of future nanoelectronics and spintronics.

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“…In addition, Stephan et al investigated the adsorption characteristics of H 2 Pc molecule on silicene above Ag (111). 105 They showed that, due to an electostatic or polarization repulsion between H 2 Pc molecule and Si surface, H 2 Pc molecule adopts a butterfly configuration on this surface. However, this molecule shows a planar configuration on the SiC and SiB surfaces.…”

Section: Functionalization Via Organic Molecule Adsorptionmentioning

confidence: 99%

Electronic, Optical and Mechanical Properties of Silicene Derivatives

Yagmurcukardes¹,

Bacaksız²,

İyikanat³

et al. 2016

Preprint

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Successful isolation of graphene from graphite opened a new era for material science and condensed matter physics. Due to this remarkable achievement, there has been an immense interest to synthesize new two dimensional materials and to investigate their novel physical properties. Silicene, form of Si atoms arranged in a buckled honeycomb geometry, has been successfully synthesized and emerged as a promising material for nanoscale device applications. However, the major obstacle for using silicene in electronic applications is the lack of a band gap similar to the case of graphene. Therefore, tuning the electronic properties of silicene by using chemical functionalization methods such as hydrogenation, halogenation or oxidation has been a focus of interest in silicene research. In this paper, we review the recent studies on the structural, electronic, optical and mechanical properties of silicene-derivative structures. Since these derivatives have various band gap energies, they are promising candidates for the next generation of electronic and optoelectronic device applications.

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Opening the way to molecular cycloaddition of large molecules on supported silicene

Cited by 7 publications

References 73 publications

Experimental molecular adsorption: electronic buffer effect of germanene on Al(1 1 1)

Experimental molecular adsorption: electronic buffer effect of germanene on Al(1 1 1)

Functionalization of group-14 two-dimensional materials

Electronic, Optical and Mechanical Properties of Silicene Derivatives

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