Interfacial Effects on the Growth of Atomically Thin Film: Group VA Elements on Au(111)

Zhou, Dechun; Si, Nan; Jiang, Bohong; Song, Xiufeng; Huang, Han; Ji, Qingmin; Niu, Tianchao

doi:10.1002/admi.201901050

Cited by 14 publications

(13 citation statements)

References 76 publications

(37 reference statements)

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“…On the other hand, in the case of Br 2 Py atop Bi-Au(111), since the bismuth layer prefers the atomic layer growth on Au(111) without surface alloying, the pristine inert property of bismuth atom due to its tightly bound 6S 2 electrons completely blocks the reactivity of the gold substrate underneath. Moreover, the difference in the growth mode of Bi on Ag(111) and Au(111) can be assigned to the relativistic effect (Ag(5s 1 4d 10 ), Au(6s 1 4f 14 5d 10 ), Bi(5d 10 6s 2 6p 3 )) and the fact that, the relative atomic radius difference between Bi and Au is bigger than 15%, which makes it unfavourable for the substitutional solid solution according to the Hume-Rothery rule 35 . In addition, a comprehensive comparison of the dehalogenative coupling of Br 2 Py on the bare Ag(111), Bi/ Ag(111) and B/Au(111) will shed more valuable insights onto the understanding of dehalogenation reaction www.nature.com/scientificreports/ mechanism on Bi(111)-Ag, which is summarized and illustrated in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…As demonstrated in literature, the growth mode of Bi on Au(111) differs significantly from that on Ag(111). Au(111) solely supports the atomic-layer growth of Bi atop with the honeycomb structure, while bismuth prefers to form surface alloy by incorporating with Ag atoms after adsorption on Ag(111) 34,35 , which introduces rich electronic states around the Fermi level 36 and might thus effectively promote dehalogenation and homocoupling reactions. In this regard, a bismuth covered silver surface, namely, Bi/Ag(111), is chosen in this report to investigate whether the surface Ullmann-like coupling can be initiated by thermal annealing.…”

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confidence: 99%

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Initiating Ullmann-like coupling of Br2Py by a semimetal surface

Wang

et al. 2021

Sci Rep

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Intensive efforts have been devoted to surface Ullmann-like coupling in recent years, due to its appealing success towards on-surface synthesis of tailor-made nanostructures. While attentions were mostly drawn on metallic substrates, however, Ullmann dehalogenation and coupling reaction on semimetal surfaces has been seldom addressed. Herein, we demonstrate the self-assembly of 2, 7-dibromopyrene (Br2Py) and the well controllable dehalogenation reaction of Br2Py on the Bi(111)–Ag substrate with a combination of scanning tunnelling microscopy (STM) and density functional theory calculations (DFT). By elaborately investigating the reaction path and formed organic nanostructures, it is revealed that the pristinely inert bismuth layer supported on the silver substrate can initiate Ullmann-like coupling in a desired manner by getting alloyed with Ag atoms underneath, while side products have not been discovered. By clarifying the pristine nature of Bi–Ag(111) and Ullmann-like reaction mechanisms, our report proposes an ideal template for thoroughly exploring dehalogenative coupling reaction mechanisms with atomic insights and on-surface synthesis of carbon-based architectures.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Initiating Ullmann-like coupling of Br2Py by a semimetal surface

Wang

et al. 2021

Sci Rep

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“…A few groups have studied the growth of tin on gold (111) surfaces by different methods [22][23][24][25][26][27]. However, the experimental realization of stanene remains challenging.…”

Section: Introductionmentioning

confidence: 99%

Epitaxial growth of honeycomb-like stanene on Au(111)

Pang

Nishino

Ogikubo

et al. 2020

Applied Surface Science

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Stanene, which is predicted to be a quantum spin Hall topological insulator with tunable topological state, seems to be the most promising candidate of the post-graphene elemental two-dimensional (2D) materials. Here, we prepared epitaxial honeycomb-like stanene on gold (111) substrates and investigated its superstructure by Low Energy Electron Diffraction and Scanning Tunneling Microscopy. Angle-Resolved PhotoEmission Spectroscopy was applied to explore the electronic structures, further confirmed by first principles calculations. The stanene-like sheet forms a nearly planar structure on the Au(111) surface with a "2×√3" superstructure in large surface areas. Core-level spectroscopy reveals that the stanene-like sheet lays almost directly on the Au(111) surface. This is consistent with DFT calculations of the atomic structure. A characteristic 2D band with parabolic dis-persion is observed.

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“…[ 44a ] In particular, its in‐plane anisotropic properties, which arise from the puckered structure, [ 152 ] have inspired the intensive exploration of other isoelectronic materials [ 45 ] and Group VA elemental analogs. [ 11d,153 ] In addition to phosphorous, arsenic, antimony [ 154 ] and bismuth [ 155 ] have all been established as semiconducting materials by calculations as well as experiments during the last several years. [ 18b ] We will address recent achievements in the epitaxial growth of these elemental graphene analogs on various types of substrates.…”

Section: Epitaxial Growth Of Me2dmsmentioning

confidence: 99%

Epitaxial Growth of Main Group Monoelemental 2D Materials

Zhou

et al. 2020

Adv Funct Materials

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Since the discovery of graphene, 2D materials have attracted significant attention for their unique properties. Monoelemental 2D materials (ME2DMs) are of particular interest because of their superiority in synthetic exploration, excellent mobility, and wide range of band gaps over other 2D compounds. Substantial efforts are devoted to fabricate high‐quality materials through various substrates and reveal the growth mechanism at the atomic scale. In this review, the recent progress in the preparation of these ME2DMs is explored, the roles of different substrates is highlighted, and the challenges of and perspectives on their heterostructures is discussed.

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Interfacial Effects on the Growth of Atomically Thin Film: Group VA Elements on Au(111)

Abstract: COMMUNICATION 1901050 (1 of 8)

Cited by 14 publications

References 76 publications

Initiating Ullmann-like coupling of Br2Py by a semimetal surface

Initiating Ullmann-like coupling of Br2Py by a semimetal surface

Epitaxial growth of honeycomb-like stanene on Au(111)

Epitaxial Growth of Main Group Monoelemental 2D Materials

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