Direct growth of aligned graphitic nanoribbons from a DNA template by chemical vapour deposition

Sokolov, Anatoliy N.; Yap, Fung Ling; Liu, Nan; Kim, Kwanpyo; Ci, Lijie; Johnson, Olasupo B.; Wang, Shuangfeng; Vosgueritchian, Michael; Koh, Ai Leen; Chen, Jihua; Park, Jinseong; Bao, Zhenan

doi:10.1038/ncomms3402

Cited by 48 publications

(45 citation statements)

References 47 publications

(62 reference statements)

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“…[ 115 ] They demonstrated anisotropic etching of SLG by thermally activated nickel nanoparticles in a H 2 atmosphere at 1000 °C, as illustrated in Figure 13 a. The crystallographically oriented cuts in SLG oriented at the same edge-chirality (60° or 120°) ( Figure 13 The characteristic width via different fabrication methods, including patterning graphene, [ 20,37,[39][40][41][42][43]46,47,54,57,59,62,63 ] unzipping CNTs, [ 34,65,68,71 ] template growth [72][73][74] and solution/ surface-assisted synthesis. [ 20,78,79,81,[83][84][85][86][87][88] (17 of 31) 1500456 wileyonlinelibrary.com REVIEW connected nanostructured graphene with width lower than 10 nm.…”

Section: Edge Controlmentioning

confidence: 97%

“…[ 72 ] The as-prepared DNA solution was spun over a substrate and immersed into a Cu(NO 3 ) 2 solution. ( Figure 7 a) Reproduced with permission.…”

Section: Dna Templatementioning

confidence: 99%

“…Thus, direct growth based on proper templates will be of high effi ciency and is possible for mass production of GNRs with controlled widths and fewer defects. [72][73][74][75][76] Three kinds of templates that can act as raw materials will be introduced in this section, including a DNA template, electrospun polymer template, and a self-masked wrinkle template.…”

Section: Template Growthmentioning

confidence: 99%

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Controllable Fabrication of Nanostructured Graphene Towards Electronics

Zeng

Xiao

Liu

et al. 2016

Adv Elect Materials

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applications, especially for fi eld-effect transistors (FETs) and sensors. [3][4][5][6] However, Klein tunneling in graphene and the related electron confi nement represent a real barrier to the development of graphene-based transistors, which results in a lack of band gap and the inability to confi ne electrons. [ 7 ] Therefore, although high mobility and high current are essential for high-frequency applications, this intrinsically high off-state current and low on/off ratio hinder the potential applications of graphene in FETs operated at room temperature.Numerous efforts have been devoted to inducing a band gap in graphene by chemical modifi cation, [8][9][10] the application of a perpendicular electric fi eld to bilayer graphene, [11][12][13] and other methods. [ 14 ] Nevertheless, these methods are uncontrollable and the as-constructed devices usually exhibit poor electronic performance. The fabrication of nanostructured graphene can be a quite effective way to introduce a bandgap. [ 15 ] Generally, nanostructured graphene refers to a graphene structure of intermediate size between microscopic and molecular, in which one dimension must be at the nanoscale, including graphene nanoribbons (GNRs), graphene nanomeshes, graphene nanodisks, graphene quantum dots, graphene nanoheterostructures, and so on. Among those graphene nanostructures, GNRs are the most popular and potentially useful ones for electronic applications; therefore, we will mainly concentrate on the progress made in GNRs. The narrowing of graphene fi lm into stripes with widths <10 nm was studied both theoretically and experimentally to create an energy band in the electronic structure of graphene due to quantum confi nement, which is the most effective way to open the band gap of graphene. In fact, the band gap is determined by the states of the edge and the width of the nanoribbon. [ 15 ] Tight binding (TB) calculations predict that GNRs terminated with 'armchair' edges can be either metallic or semi-conducting depending on their widths. Nanoribbons terminated with 'zigzag' edges are always metallic regardless of their widths. In order for the GNRs to open band gaps of a similar order as commonly used semiconducting materials (e.g. Si (1.14 eV), GaAs (1.43 eV)) widths of less than 2 nm are likely to be necessary. [ 16 ] Therefore, as the fi rst step to implement the electronic applications, nanostructured graphene must be directly synthesized Due to graphene's exceptional electronic properties, strong efforts are being made to push forward its nanoelectronic applications. However, the gapless band structure of truly 2D graphene makes it unsuitable for direct use in graphene-based fi eld-effect transistors (FETs), which is one of the most widely discussed graphene applications in electronics. Therefore, in order to accomplish graphene's applications in semiconducting nanoelectronics, it is necessary to produce nanostructured graphene with suffi ciently narrow characteristic width, thus introducing further confi nement and opening a reasonably la...

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Section: Edge Controlmentioning

confidence: 97%

“…[ 72 ] The as-prepared DNA solution was spun over a substrate and immersed into a Cu(NO 3 ) 2 solution. ( Figure 7 a) Reproduced with permission.…”

Section: Dna Templatementioning

confidence: 99%

Section: Template Growthmentioning

confidence: 99%

See 1 more Smart Citation

Controllable Fabrication of Nanostructured Graphene Towards Electronics

Zeng

Xiao

Liu

et al. 2016

Adv Elect Materials

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show abstract

“…Other templates besides porous membranes have been used to a lesser extent. Two-dimensional nanostructures such as graphitic nanoribbons have been produced through CVD onto DNA as the template [309]. Through templating with reverse micelles of PS-b-PVP onto silicon substrates, ALD was done to achieve nanotemplated ZnO onto the highly homogeneous and periodic surface [310].…”

Section: Vapor Depositionmentioning

confidence: 99%

Template-based syntheses for shape controlled nanostructures

Pérez-Page

et al. 2016

Advances in Colloid and Interface Science

116

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A variety of nanostructured materials are produced through template-based synthesis methods, including zerodimensional, one-dimensional, and two-dimensional structures. These span different forms such as nanoparticles, nanowires, nanotubes, nanoflakes, and nanosheets. Many physical characteristics of these materials such as the shape and size can be finely controlled through template selection and as a result, their properties as well. Reviewed here are several examples of these nanomaterials, with emphasis specifically on the templates and synthesis routes used to produce the final nanostructures. In the first section, the templates have been discussed while in the second section, their corresponding synthesis methods have been briefly reviewed, and lastly in the third section, applications of the materials themselves are highlighted. Some examples of the templates frequently encountered are organic structure directing agents, surfactants, polymers, carbon frameworks, colloidal sol-gels, inorganic frameworks, and nanoporous membranes. Synthesis methods that adopt these templates include emulsion-based routes and template-filling approaches, such as self-assembly, electrodeposition, electroless deposition, vapor deposition, and other methods including layer-by-layer and lithography. Templatebased synthesized nanomaterials are frequently encountered in select fields such as solar energy, thermoelectric materials, catalysis, biomedical applications, and magnetowetting of surfaces.

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“…viruses [23], cellulose [24][25][26][27][28][29], and DNA [30], with high reproducibility. Typically, these materials are often applied as uniform coatings with nanoscale or macroscale thicknesses.…”

mentioning

confidence: 99%

Biomimetic electroactive polyimide with rose petal-like surface structure for anticorrosive coating application

Ji¹,

Li²,

Yu³

et al. 2017

Express Polym. Lett.

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Direct growth of aligned graphitic nanoribbons from a DNA template by chemical vapour deposition

Cited by 48 publications

References 47 publications

Controllable Fabrication of Nanostructured Graphene Towards Electronics

Controllable Fabrication of Nanostructured Graphene Towards Electronics

Template-based syntheses for shape controlled nanostructures

Biomimetic electroactive polyimide with rose petal-like surface structure for anticorrosive coating application

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