Helical Wrapping and Insertion of Graphene Nanoribbon to Single-Walled Carbon Nanotube

Li, Yunfang; Sun, Fengzhen; Li, Hui

doi:10.1021/jp205210x

Cited by 33 publications

(30 citation statements)

References 58 publications

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“…Graphene spirals are distinct from the helical graphene motifs reported earlier, such as graphene stripes and ribbons bent to spiral-like shapes. [32][33][34][35] In those earlier motifs, the starting point has been a graphene ribbon itself, with regular edges and curvature-or strain-modified π-electron system. [36,37] In such systems there has always been one-toone mapping between the helical structure and flat graphene.…”

Section: B Structure and Topology Of Graphene Spiralsmentioning

confidence: 99%

Topological Signatures in the Electronic Structure of Graphene Spirals

Avdoshenko

Koskinen

Sevinçli

et al. 2013

Sci Rep

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Topology is familiar mostly from mathematics, but also natural sciences have found its concepts useful. Those concepts have been used to explain several natural phenomena in biology and physics, and they are particularly relevant for the electronic structure description of topological insulators and graphene systems. Here, we introduce topologically distinct graphene forms - graphene spirals - and employ density-functional theory to investigate their geometric and electronic properties. We found that the spiral topology gives rise to an intrinsic Rashba spin-orbit splitting. Through a Hamiltonian constrained by space curvature, graphene spirals have topologically protected states due to time-reversal symmetry. In addition, we argue that the synthesis of such graphene spirals is feasible and can be achieved through advanced bottom-up experimental routes that we indicate in this work.

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Section: B Structure and Topology Of Graphene Spiralsmentioning

confidence: 99%

Topological Signatures in the Electronic Structure of Graphene Spirals

Avdoshenko

Koskinen

Sevinçli

et al. 2013

Sci Rep

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“…When the dangling σ-orbitals on the GNR are all saturated by hydrogen atoms, the rolled GNR can still self-assemble into the SWCNT and form a helix, which is quite different from the result of the GNR modified with -OH, indicating that the functional groups on the GNRs have a significant influence on their self-assembly. In addition, the spiral of the GNR without any dangling σ-orbitals also reveals that the van der Waals interaction is the main driving force of the helix self-assembly, rather than the dangling σ-orbitals at the edge of GNRs [42]. At the same time, the stability of the final configuration in different systems has been verified.…”

Section: The Threshold Of Gnrs In I-layer Ismentioning

confidence: 69%

Self-Assembly of Graphene Nanoribbons Induced by the Carbon Nanotube

Li¹,

Li²,

Chen³

2017

Graphene Materials - Structure, Properties and Modifications

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In this chapter, a series of molecular dynamics simulations have been carried out to explore the self-assembly of graphene nanoribbons (GNRs) induced by the single-walled carbon nanotubes (SWCNTs). Simulation results show that GNRs can insert and wrap SWCNTs spontaneously, forming helical configurations and maximizing the π-π stacking area between graphene and SWCNT. The helical configuration takes the least amount of energy and achieves the maximum occupancy. The size and function group of GNR and SWCNT should meet the required conditions to guarantee the self-assembly in insertion and wrapping processes. Several GNRs can spiral in an SWCNT simultaneously, and two formulas have come up in this study to estimate the quantity threshold for multiple GNR spiralling. The rolled GNRs can also spontaneously insert into SWCNTs, forming a DNA-like double helix, or collapsing to a linked double graphitic nanoribbon and wrapping in a helical manner around the tube.

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“…41 This peculiar phenomenon encourages us to introduce the GNR to C 720 , that has relatively larger diameter, as shown in Fig. 41 This peculiar phenomenon encourages us to introduce the GNR to C 720 , that has relatively larger diameter, as shown in Fig.…”

Section: Resultsmentioning

confidence: 93%

Novel scroll peapod produced by spontaneous scrolling of graphene onto fullerene string

et al. 2016

Phys. Chem. Chem. Phys.

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Novel scroll peapods are fabricated simply by utilizing the spontaneous scrolling mechanism of graphene onto fullerene string. The basic interaction between the graphene and the fullerene string is investigated, and the mechanism of the formation of the scroll peapod is explained in particular. The formation of the scroll peapod and its formation time are influenced by the combined effects of fullerene number, diameter and graphene size. It is also worth noting that narrow graphene nanoribbon wrapped onto a C720 bean can form a particular helical peapod. Higher temperature slows the scrolling dynamics, and even hinders the formation of the scroll peapod. This study provides a scientific basis for producing scroll peapods simply, and eventually their applications in various areas.

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Helical Wrapping and Insertion of Graphene Nanoribbon to Single-Walled Carbon Nanotube

Cited by 33 publications

References 58 publications

Topological Signatures in the Electronic Structure of Graphene Spirals

Topological Signatures in the Electronic Structure of Graphene Spirals

Self-Assembly of Graphene Nanoribbons Induced by the Carbon Nanotube

Novel scroll peapod produced by spontaneous scrolling of graphene onto fullerene string

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