Epitaxial growth of aligned atomically precise chevron graphene nanoribbons on Cu(111)

Teeter, Jacob D.; Costa, Paulo S.; Pour, Mohammad Mehdi; Miller, Daniel P.; Zurek, Eva; Enders, Axel; Sinitskii, Alexander

doi:10.1039/c6cc08006e

Cited by 42 publications

(51 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, the structure was further confirmed by Schulz et al As another significant feature, GNRs with aligned properties are also attractive for electronic applications. Teeter et al found the resulted chevron GNRs with preferential angle distribution on Cu(111) substrates (Figure l) . Epitaxial effect may have an impact on this aligned phenomenon evidenced by density functional theory (DFT) result.…”

Section: Crucial Elements and Growth Procedures Of Gnrsmentioning

confidence: 94%

See 1 more Smart Citation

Modified Engineering of Graphene Nanoribbons Prepared via On‐Surface Synthesis

Zhou

2019

Advanced Materials

View full text Add to dashboard Cite

1D graphene nanoribbons (GNRs) have a bright future in the fabrication of next‐generation nanodevices because of their nontrivial electronic properties and tunable bandgaps. To promote the application of GNRs, preparation strategies of miscellaneous GNRs have to be developed. The GNRs prepared by top‐down approaches are accompanied by uncontrolled edges and structures. In order to overcome the difficulties, bottom‐up methods are widely used in the growth of various GNRs due to controllability of GNRs' features. Among those bottom‐up methods, the on‐surface synthesis is a promising approach to prepare GNRs with distinct widths, edge/backbone structures, and so forth. Therefore, modified engineering of the GNRs prepared via on‐surface synthesis is of great significance in controllable preparation of GNRs and their potential applications. In the past decade, there have been a lot of reports on controllable preparation of GNRs using on‐surface synthesis approach. Herein, the advances of GNRs grown via on‐surface growth strategy are described. Several growth parameters, the latest advances in the modification of the GNR structure and width, the GNR doping/co‐doping with heteroatoms, a variety of GNR heterojunctions, and the device application of GNRs are reviewed. Finally, the opportunities and challenges are discussed.

show abstract

Section: Crucial Elements and Growth Procedures Of Gnrsmentioning

confidence: 94%

Section: Crucial Elements and Growth Procedures Of Gnrsmentioning

confidence: 99%

Modified Engineering of Graphene Nanoribbons Prepared via On‐Surface Synthesis

Zhou

2019

Advanced Materials

View full text Add to dashboard Cite

show abstract

“…[83] 13-AGNR had asmaller band gap than 7-AGNR in the STS spectrum, [82] thus suggesting that increasing the width of the nanoribbon could result in electrical properties more similar to 2D graphene.N ano-structures with zigzag edges are expected to exhibit spin-polarized electronic edge states.H owever, the formation of GNRs with zigzag edges is almost impossible in solution-mediated reactions because of their relatively unstable nature.R emarkably,t he Fasel group reported the first synthesis of full zigzag-edged GNRs (ZGNRs) using U-shaped monomers under UHV conditions. [84] As aconsequence of the strong chemical reactivity at the nanoribbon edges,t his 6-ZGNR was found to be strongly bound to the underlying Au(111) surface,which limits its application under ambient conditions.T he edge passivation approaches could be used to reduce the chemical reactivity and at the same time preserve the electronic properties of the pristine GNRs.S ome hybrid-edge structures have been obtained with appropriately designed precursors, such as chevron-types, [85] chiraltypes, [86] and acene-types. [87] Recently,n ew type zigzag edgeextended GNRs with aw idth of 9 to 11 carbon atoms was derived from zigzag edge-encased poly-(para-2,9-dibenzo[bc,kl]coronenylene) polymer chains.T hese GNRs exhibited ah igh ratio of zigzag (67 %) to armchair (25 %) edge segments.…”

Section: Molecular Reactions:f Ormation Of Chemical Bondsmentioning

confidence: 99%

Chemical Synthesis at Surfaces with Atomic Precision: Taming Complexity and Perfection

et al. 2019

View full text Add to dashboard Cite

Scanning probe microscopy (SPM) is a powerful tool to study the structure and dynamics of molecules at surfaces and interfaces as well as to precisely manipulate atoms and molecules by applying an external force, by inelastic electron tunneling, or by means of an electric field. The rapid development of these SPM manipulation modes made it possible to achieve fine‐control over fundamental processes in the physics of interfaces as well as chemical reactivity, such as adsorption, diffusion, bond formation, and bond dissociation with precision at the single atom/molecule level. Their controlled use for the fabrication of atomic‐scale structures and synthesis of new, perhaps uncommon, molecules with programmed properties are reviewed. Opportunities and challenges towards the development of complex chemical systems are discussed, by analyzing potential future impacts in nanoscience and nanotechnology.

show abstract

“…Different metal substrates can affect the surface reaction via interaction with molecules, resulting in varied reaction activities. For example, it is reported that in the synthesis of chevron‐like graphene nanoribbons from 6,11‐dibromo‐1,2,3,4‐tetraphenyltriphenylene, the cyclodehydrogenation temperature on Au(111) (250–440 °C) is much higher than that on Cu(111) (140–200 °C) . Meanwhile, the chevron graphene ribbons produced on Cu(111) prefer to align along the <112> directions, which is absent on Au(111).…”

Section: Controlling Surface Reaction Via Surface Manipulationmentioning

confidence: 99%

“…Aided by the substrate that acts as the catalyst or template in surface reaction, it becomes feasible to prepare target organic networks from precursors with appropriate functional groups. For instance, many complex covalent‐bonded organic nanostructures like nanographenes, graphene nanoribbons, graphdiyne nanostructures, graphdiyne wires, metalated carbyne chains, and the like can be prepared with carefully designed precursors.…”

Section: Controlling Surface Reaction Via Molecular Manipulationmentioning

confidence: 99%

Two‐Sidedness of Surface Reaction Mediation

et al. 2019

View full text Add to dashboard Cite

A heterogeneous catalytic process involves many surface elementary steps that affect the overall catalytic performance in one way or another. In general, a high-performance heterogeneous catalyst should meet the main criteria: excellent catalytic activity and high selectivity toward target products. Using surface science techniques, the two-sidedness of the surface reaction mediations can be explored, from the perspectives of the surface and the molecule manipulations. The surface manipulation refers to a reaction that is mediated by composition and structure of the substrate as well as surface species, while the molecular manipulation relates to a reaction that is mediated by the reacting molecule via the precursor selection, environmental control, or external excitation. The best catalytic system should consist of the most efficient catalyst and the best suitable reacting molecule, in addition to its economic benefit and environmental amity. Recent research progress in surface reaction mediation is outlined, and its two-sidedness is governed by the Arrhenius equation. This should shed new light on the connection between basic theory and surface reaction mediation strategies. To conclude, challenges and possible opportunities are elaborated for efficient surface reaction mediations.

show abstract

Epitaxial growth of aligned atomically precise chevron graphene nanoribbons on Cu(111)

Cited by 42 publications

References 19 publications

Modified Engineering of Graphene Nanoribbons Prepared via On‐Surface Synthesis

Modified Engineering of Graphene Nanoribbons Prepared via On‐Surface Synthesis

Chemical Synthesis at Surfaces with Atomic Precision: Taming Complexity and Perfection

Two‐Sidedness of Surface Reaction Mediation

Contact Info

Product

Resources

About