Soluble graphene through edge-selective functionalization

Sun, Zhengzong; Kohama, Shin-Ichiro; Zhang, Zengxing; Lomeda, Jay R.; Tour, James M.

doi:10.1007/s12274-010-1016-2

Cited by 130 publications

(91 citation statements)

References 24 publications

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“…1d reveals that RGO exhibits typical transparent and rippled silk morphology. From the folded regions, the number of layers could be identified according to recent reports [16]. The high resolution TEM (HRTEM) image is used to access the number of layers at multiple locations.…”

Section: Resultsmentioning

confidence: 99%

A facile synthesis of reduced graphene oxide with Zn powder under acidic condition

Liu¹,

Huang²,

Wang³

2013

Materials Letters

106

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Section: Resultsmentioning

confidence: 99%

A facile synthesis of reduced graphene oxide with Zn powder under acidic condition

Liu¹,

Huang²,

Wang³

2013

Materials Letters

106

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“…38) Therefore, edge selectivity is a key factor on behalf of an effective edge functionalization which is directly related to the degree of exposure of the interior basal planes to the functionalization reagent. 64) Single-and few-layer graphene sheets are also sensitive to their chemical and physical environment which can induce the formation of ripples. The reason for rippling could be attributed to the presence or formation of vacancies and sp 3 bonds, which interrupt the conjugation and make the graphene surface buckle over short ranges.…”

Section: Edge Termination Through Chemical Functionalizationmentioning

confidence: 99%

Nature of Graphene Edges: A Review

Açık

Chabal

2011

Jpn. J. Appl. Phys.

166

102

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Graphene edges determine the optical, magnetic, electrical, and electronic properties of graphene. In particular, termination, chemical functionalization and reconstruction of graphene edges leads to crucial changes in the properties of graphene, so control of the edges is critical to the development of applications in electronics, spintronics and optoelectronics. Up to date, significant advances in studying graphene edges have directed various smart ways of controlling the edge morphology. Though, it still remains as a major challenge since even minor deviations from the ideal shape of the edges significantly deteriorate the material properties. In this review, we discuss the fundamental edge configurations together with the role of various types of edge defects and their effects on graphene properties. Indeed, we highlight major demanding challenges to find the most suitable technique to characterize graphene edges for numerous device applications such as transistors, sensors, actuators, solar cells, light-emitting displays, and batteries in graphene technology.

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“…For example, Sun et al 20. concluded that graphite can be changed to graphene by covalent functionalization of the graphite and the synthesis of a stable suspension in the presence of DMF without any added surfactant or stabilizer.…”

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confidence: 99%

Mass production of highly-porous graphene for high-performance supercapacitors

Amiri

Shanbedi

Ahmadi

et al. 2016

Sci Rep

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This study reports on a facile and economical method for the scalable synthesis of few-layered graphene sheets by the microwave-assisted functionalization. Herein, single-layered and few-layered graphene sheets were produced by dispersion and exfoliation of functionalized graphite in ethylene glycol. Thermal treatment was used to prepare pure graphene without functional groups, and the pure graphene was labeled as thermally-treated graphene (T-GR). The morphological and statistical studies about the distribution of the number of layers showed that more than 90% of the flakes of T-GR had less than two layers and about 84% of T-GR were single-layered. The microwave-assisted exfoliation approach presents us with a possibility for a mass production of graphene at low cost and great potentials in energy storage applications of graphene-based materials. Owing to unique surface chemistry, the T-GR demonstrates an excellent energy storage performance, and the electrochemical capacitance is much higher than that of the other carbon-based nanostructures. The nanoscopic porous morphology of the T-GR-based electrodes made a significant contribution in increasing the BET surface as well as the specific capacitance of graphene. T-GR, with a capacitance of 354.1 Fg−1 at 5 mVs−1 and 264 Fg−1 at 100 mVs−1, exhibits excellent performance as a supercapacitor.

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Soluble graphene through edge-selective functionalization

Cited by 130 publications

References 24 publications

A facile synthesis of reduced graphene oxide with Zn powder under acidic condition

A facile synthesis of reduced graphene oxide with Zn powder under acidic condition

Nature of Graphene Edges: A Review

Mass production of highly-porous graphene for high-performance supercapacitors

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