Random Walk to Graphene (Nobel Lecture)

Geǐm, A. K.

doi:10.1002/anie.201101174

Cited by 155 publications

(211 citation statements)

References 89 publications

(105 reference statements)

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“…The supernatant was collected, layered with pentane (5 ml) and cooled to À 35°C to afford the dark green crystals of 2 (56 mg, 0.02 mmol, 65%). 1 Si (3) Pd (4) Pd (11) Si (6) Si (6) Pd (4) Si (3) Pd (11) Si ( 10 (2) (50 mg, 0.02 mmol) was dissolved in toluene (3 ml), and toluene (2 ml) solution of mesityl isocyanide (28 mg, 0.19 mmol) was added at À 35°C. After the resulting mixture was stirred for 12 h at À 35°C, the solvent was removed under reduced pressure.…”

Section: Methodsmentioning

confidence: 99%

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A ladder polysilane as a template for folding palladium nanosheets

et al. 2013

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Although discrete nano-sized compounds consisting of a monolayer sheet of multiple atoms have attracted much attention, monolayer transition metal nanosheets are difficult to access. Here we report a template synthesis of the folding metal nanosheet (2) consisting of 11 palladium atoms by treatment of a ladder polysilane, decaisopropylbicyclo[2.2.0]hexasilane (1), with Pd(CN t Bu) 2 . Crystallographic analysis reveals that the compound is composed of two monolayer Pd 7 sheets sharing three palladium atoms at the junction. Each Pd atom is stabilized by Pd-Si s-bonds, Pd-Pd bonds and coordination of isocyanides. Ligand exchange of 2 from CN t Bu to CN(2,4,6-Me 3 -C 6 H 2 ) is accompanied by structural rearrangement, leading to the formation of another folding Pd 11 nanosheet (3) consisting of two edge-sharing Pd 7 sheets. The shapes of the Pd 7 sheets as well as the dihedral angle between the two Pd 7 sheets are dependent on the substituent of the isocyanide ligand.

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Section: Methodsmentioning

confidence: 99%

“…T he isolation of graphene from graphite, typically by scratching away multilayers of graphite, has made it possible to access a new form of carbon with nanosheet structures [1][2][3][4] . Several metal oxides and sulphides having multilayered structures also form nanosheets by peeling off their monolayers 5 .…”

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confidence: 99%

A ladder polysilane as a template for folding palladium nanosheets

et al. 2013

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“…27 Graphene was considered as a rapidly rising star material and attracted a great deal of attention owing to its excellent mechanical, electrical, thermal, and optical properties. [28][29][30][31] A key topic in the research and applications of graphene is the reduction of graphene oxide (GO). Nowadays, many different synthesis strategies have been developed to produce graphene through the reduction of GO.…”

Section: Introductionmentioning

confidence: 99%

Fusion of nacre, mussel, and lotus leaf: bio-inspired graphene composite paper with multifunctional integration

et al. 2013

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Multifunctional integration is an inherent characteristic for biological materials with multiscale structures. Learning from nature is an effective approach for scientists and engineers to construct multifunctional materials. In nature, mollusks (abalone), mussels, and the lotus have evolved different and optimized solutions to survive. Here, bio-inspired multifunctional graphene composite paper was fabricated in situ through the fusion of the different biological solutions from nacre (brick-and-mortar structure), mussel adhesive protein (adhesive property and reducing character), and the lotus leaf (self-cleaning effect). Owing to the special properties (self-polymerization, reduction, and adhesion), dopamine could be simultaneously used as a reducing agent for graphene oxide and as an adhesive, similar to the mortar in nacre, to crosslink the adjacent graphene. The resultant nacre-like graphene paper exhibited stable superhydrophobicity, self-cleaning, anticorrosion, and remarkable mechanical properties underwater. Multifunctional integration is an inherent characteristic for biological materials with multiscale structures.Learning from nature is an effective approach for scientists and engineers to construct multifunctional materials. In nature, mollusks (abalone), mussels, and the lotus have evolved different and optimized solutions to survive. Here, bio-inspired multifunctional graphene composite paper was fabricated in situ through the fusion of the different biological solutions from nacre (brick-and-mortar structure), mussel adhesive protein (adhesive property and reducing character), and the lotus leaf (self-cleaning effect).Owing to the special properties (self-polymerization, reduction, and adhesion), dopamine could be simultaneously used as a reducing agent for graphene oxide and as an adhesive, similar to the mortar in nacre, to crosslink the adjacent graphene. The resultant nacre-like graphene paper exhibited stable superhydrophobicity, self-cleaning, anti-corrosion, and remarkable mechanical properties underwater.

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“…The most well-studied carbon-based materials are fullerenes (C 60 and its higher derivatives), [1][2][3] carbon nanotubes (CNTs), 4-6 graphene 7,8 and graphene derivatives such as graphene oxide (GO) 9 and graphene nanoribbons (GNRs), 10 carbon nanodots (CDs), 11 and carbon fibers. 12 To date, the only successfully commercialized material are carbon fibers, which are industrially produced on a large scale for applications where high tensile strength and rigidity are needed (e.g., in polymer reinforcement).…”

Section: Introductionmentioning

confidence: 99%

“…Pioneering studies were conducted by Novoselov and Geim, leading to the recognition of their work with the award of the 2010 Nobel Prize in Physics. 7,8 Nevertheless, the absence of a procedure for the controllable and reproducible synthesis of graphene sheets with well-defined size, shape, and edge structure, characteristics that would predefine their electronic properties, remains a critical issue limiting their applicability in optoelectronics. GNRs are materials that could resolve these problems as they are theoretically predicted to have tailor-made physical properties.…”

Section: Introductionmentioning

confidence: 99%

Chemical synthesis of graphene nanoribbons

Pefkianakis¹,

Σακελλαρίου²,

Vougioukalakis³

2015

Arkivoc

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Dedicated to Professor Michael AbstractGraphene is a two-dimensional atom-thick sheet of graphite composed of an sp 2 -hybridized carbon atom network. Its isolation in 2004 and the extensive research that followed have led, amongst others, to graphene nanoribbons (GNRs), a graphene-based structure having nano-scale dimensions and semiconducting or metallic electronic properties that depend on its geometry and dimensions. These characteristics of GNRs are in stark contrast to those of graphene, which is a carbon sheet with semimetal, zero band gap characteristics. In the present article, we discuss the progress that has been reported towards producing GNRs with predefined dimensions, by using bottom-up chemical synthesis approaches.

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Random Walk to Graphene (Nobel Lecture)

Cited by 155 publications

References 89 publications

A ladder polysilane as a template for folding palladium nanosheets

A ladder polysilane as a template for folding palladium nanosheets

Fusion of nacre, mussel, and lotus leaf: bio-inspired graphene composite paper with multifunctional integration

Chemical synthesis of graphene nanoribbons

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