A simple method for graphene production based on exfoliation of graphite in water using 1-pyrenesulfonic acid sodium salt

Yang, Huafeng; Hernández, Yenny; Schlierf, Andrea; Felten, Alexandre; Eckmann, Axel; Johal, Sukhraaj Kaur; Louette, Pierre; Pireaux, Jean‐Jacques; Feng, Xinliang; Müllen, Kläus; Palermo, Vincenzo; Casiraghi, Cinzia

doi:10.1016/j.carbon.2012.11.022

Cited by 157 publications

(150 citation statements)

References 34 publications

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“…Moreover, in a rigorous investigation on surfactant-assisted graphite exfoliation in water, a variety of ionic and nonionic surfactants were explored ( Fig. 2) [47,48]. In general, nonionic surfactants, which have a hydrophobic tail and a long hydrophilic part, outperformed their ionic counterparts because of the ability to suspend graphene in water.…”

Section: Liquid-phase Exfoliation (Lpe)mentioning

confidence: 99%

Exfoliation of graphene via wet chemical routes

et al. 2015

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a b s t r a c tGraphene is a two-dimensional material that has fascinating electrical and optical properties, and this material has provided chemists with great possibilities and challenges. Interests in graphene's exceptional physical and chemical properties and in its potential for applications have generated thousands of publications and have accelerated the pace of graphene research. Although considerable scientific progress has been achieved, the key to commercializing graphene lies in the cost-effective and scalable production of this material. Graphene can be produced using a variety of wet chemical methods, such as chemical oxidation followed by exfoliation, liquid-phase and electrochemical assisted exfoliation etc. from inexpensive and abundant sources such as graphite. This review article summarizes the recent progress toward the preparation of graphene through wet chemical routes and discusses their remaining challenges. In particular, the quality and yield of graphene sheets produced using these exfoliation protocols will be emphasized.

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Section: Liquid-phase Exfoliation (Lpe)mentioning

confidence: 99%

Exfoliation of graphene via wet chemical routes

et al. 2015

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“…24 Sulfonated pyrenes are often used to create aqueous dispersions of graphene, with the graphene flakes bearing an anionic charge. 25,26 Since pyrenyl lipid 3r has a DDAB motif with pyrene appended in the hydrophobic region, this compound may be well suited to the formation of mono-or multilayers on hydrophobic surfaces, providing these surfaces with a cationic charge. Although no evidence of hydrolysis was observed for suspensions of pyrene lipid 3r in water over a period of several days, many technological applications of graphene dispersions require stability for a period greater than several weeks.…”

Section: Amine Exchange With Iminolipids Self-assembled Into Vesicle mentioning

confidence: 99%

Aqueous dispersions of nanostructures formed through the self-assembly of iminolipids with exchangeable hydrophobic termini

McManus

Liu

et al. 2017

Phys. Chem. Chem. Phys.

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The addition of amines to an aldehyde surfactant, which was designed to be analogous to didodecyldimethylammonium bromide, gave exchangeable "iminolipids" that self-assembled to give stable aqueous dispersions of nano-sized vesicles. For example, sonication of suspensions of the n-hexylamine-derived iminolipid gave vesicles 50 to 200 nm in diameter that could encapsulate a water-soluble dye. The iminolipids could undergo dynamic exchange with added amines, and the resulting equilibrium constants (Krel) were quantified by 1 H NMR spectroscopy. In the absence of lipid self-assembly, in CDCl3, the assayed primary amines gave very similar Krel values. However in D2O the value of Krel generally increased with increasing amine hydrophobicity, consistent with partitioning into a self-assembled bilayer. Amines with aromatic groups showed significantly higher values of Krel in D2O compared to similarly hydrophobic alkylamines, suggesting that π-π interactions favor lipid self-assembly. Given this synergistic relationship, π-rich pyrenyliminolipids were created and used to exfoliate graphite, leading to aqueous dispersions of graphene flakes that were stable over several months.

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“…However, GO itself is an insulator, and reduced GO graphene sheets always have defects, and during the process it could produce toxic wastes. The other trend is to use organic solvent [15][16][17] or water solution [18] that has similar surface energy as graphene to exfoliate graphite directly into graphene. By sonicating the mixture of graphite and suitable solution for a certain time, monolayer and multilayer graphene could be exfoliated from graphite, and a stable dispersion could be formed.…”

Section: Introductionmentioning

confidence: 99%

“…So this method is only applicable in making graphene electric devices, such as solar cell, sensor, and transistor, etc., but not practical for nanocomposites. The other is the top-down approach, which is exfoliation of graphite, including mechanical cleavage [12] and chemical exfoliation [13][14][15][16][17][18]. Among those, chemically exfoliated graphene has attracted increasing attention, because it make mass production of graphene possible.…”

Section: Introductionmentioning

confidence: 99%

Comparison study of graphene based conductive nanocomposites using poly(methyl methacrylate) and polypyrrole as matrix materials

Wang

Jayatissa

2015

J Mater Sci: Mater Electron

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Graphene was used as the filler to mix with two kinds of polymer materials, poly(methyl methacrylate) (PMMA) and polypyrrole (PPy). PMMA is an insulator and PPy is an intrinsic semiconducting/conducting polymer. Graphene/PMMA nanocomposite (GrPMMA) was produced by solution blending and spin-coating deposition, and graphene/PPy nanocomposite (GrPPy) was produced by in situ polymerization and doctor-blade coating. The X-ray diffraction and Raman spectroscopy were used to characterize the structures of GrPMMA and GrPPy. The electrical conductivity was studied as a function of graphene concentration for both GrPMMA and GrPPy. The electrical conductivity of PMMA was improved drastically after adding graphene, and the electrical conductivity of GrPMMA increases as the graphene concentration increases. However, the electrical conductivity of PPy decreases after adding graphene, and the electrical conductivity of GrPPy decreases as the graphene concentration increases. The difference in change in electrical conductivity of PMMA and PPy after addition of graphene may be due to the different electron transport mechanisms of those two nanocomposite materials.

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A simple method for graphene production based on exfoliation of graphite in water using 1-pyrenesulfonic acid sodium salt

Cited by 157 publications

References 34 publications

Exfoliation of graphene via wet chemical routes

Exfoliation of graphene via wet chemical routes

Aqueous dispersions of nanostructures formed through the self-assembly of iminolipids with exchangeable hydrophobic termini

Comparison study of graphene based conductive nanocomposites using poly(methyl methacrylate) and polypyrrole as matrix materials

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